BT1

Which Wi-Fi transmitting device has the highest likelihood to support DFS channels?

Enterprise-grade APs.

A signal increase of 1 dB represents a _________ increase in power?

25.89%.

Which of the following describes the bandwidth of a single FT1?

64 Kbps.

A number that compares an amount that is less than the whole to the whole amount is?

A fraction

What is the maximum data rate of 802.11b network?

11 Mbps.

Which of the following best represents a hub?

A repeater.

What does a flashing Tel or Voice indicator on an embedded multimedia terminal adapter (EMTA) indicate?

AC power failed and the EMTA is running off the battery.

What does a DOCSIS 3.1 seek first when synchronizing with the cable modem termination system (CMTS) in order to receive operational information?

An orthogonal frequency division multiplexing (OFDM) channel that contains a set of contiguous subcarriers called the PHY link channel (PLC).

What method, in SIP terminology, is defined as a message that terminates a session by either endpoint?

BYE.

Which of the following topologies starts at the network interface device (NID) and routes through the customer premises from one modular jack to the next?

Bus topology.

Which type of unshielded twisted-pair (UTP) cable does not easily catch fire and is designed to smoke very little so that toxic fumes are not circulated through a building?

CMP - Plenum-rated cable.

Define conductance.

Conductance is the term used to describe how well a material conducts current flow.

In large networks, how do most routers get their routing tables?

Each router automatically builds and maintains its own routing table.

The recording head of a tape recorder is actually a(an)?

Electromagnet

Direct current?

Flow is continuous electron flow in the same direction.

Which of the following is a connection-oriented packet-switched network service that works at the Data Link Layer?

Frame relay.

Which of the following is a cause of egress on a cable?

Improperly installed F-connectors.

What is one operation to check after adding a new modular telephone jack?

Inbound call capability.

What is a private, internal network that uses Internet applications, tools, and protocols?

Intranet.

Which type of address is unique anywhere in the world?

NIC address

Which colors are used on a telephone station jack?

Red/Green, Yellow/Black.

What are Subscriber Line Carrier (SLC) circuits used for?

Reduce the number of physical wire pairs.

Which of the following are two types of domain names?

Relative name and fully qualified domain name (FQDN).

What is the definition of siemen and what is it's symbol?

Sieman is the unit of conductance. The symbol for siemen is ℧.

The cable modem emulator indicates a transmit level that is significantly lower than what it should be at a wall outlet. Using the divide and conquer method to troubleshoot this problem, how should you start investigating?

Take signal level readings using a cable modem emulator at the ground block.

A narrow slice of spectrum appears on the 2.4 GHz band that may or may not cause congestion when this button is pressed on a 2.4 GHz cordless phone?

Talk

A customer reports a problem of no dial tone (NDT). Upon inspection, the technician notices that new carpeting has been installed. What should the technician do next?

Look for a cable that runs under the carpet; it is likely that the cable has a short from the carpeting tack strip.

Which of the following is a unique address that is physically assigned to devices such as a modem or network interface card (NIC)?

MAC address.

Which of the following best describes stereotyped thinking?

Presuming that all members of a group have certain characteristics.

What would be the downstream throughput if two quadrature amplitude modulation (QAM) channels with a throughput of 38 megabits per second (Mbps) were bonded?

76 Mbps.

Which 802.11 standard takes more time to send and receive data, thus causing congestion on the 2.4 GHz band?

802.11b.

Which of the following specifications provides a standard definition of Ethernet VLANs?

802.1Q.

Using a 77HP-G tone generator in the Off/Polarity position to test a telephone line for voltage and polarity, what does a bright green light emitting diode (LED) indicate?

A clear working line with correct polarity.

Data Over Cable Service Interface Specification (DOCSIS) version was the first to provide an option for raising the top frequency of the upstream spectrum to 85 megahertz (MHz) in order to create enough bandwidth for upstream carriers from modems running on previous DOCSIS versions?

DOCSIS 3.0.

The strength of an electromagnetic field is?

Determined by the magnitude of the magnetomotive force (mmf).

How much signal is needed from the subscriber's tap port @ 750 MHz to provide a minimum of +3.0 dBmV to each of the TV sets when there is 132 feet of series 6 cable and a two-way splitter? (use 5.65 dB per 100 feet for the Series 6 cable attenuation rate and 4.0 dB for the splitter attenuation.)

14.5 dBmV.

How many kilowatt-hours (kWh) would be consumed by a standby power supply that provides 60 volts and 10 amperes of current for a period of 3 ½ hours?

2.1 kWh.

1:5 ratio is equal to?

20%

According to the FCC, leaks __________ and above measured ___________ feet from the cable must be logged and repaired.

20uv/m, 10.

An input-to-output power ratio of 10:1 has an input-to-output voltage ratio of?

3.162:1, the square root of the power ratio.

ER2 = __________ volts in a DC series circuit where R1 = 150 ohms, R2 = 150 ohms, R3 = 550 ohms, IT = 0.2 amperes?

30

What is a result of 5 GHz wavelengths being shorter than 2.4 GHz wavelengths?

5 GHz waves have a lower indoor range then 2.4 GHz waves.

When the output of a line extender is 3dB lower than it normally should be?

The signal is 3 dB lower than normal from that point on.

You are installing IP Voice at an apartment. Which device should you use to identify the feed that goes to the customer's apartment?

Toner and remote.

The attribute of being "active" as a critical thinker means?

You observe and take notes relevant to the issue.

The power ratio for 2 dB is?

1.585:1.

Which of the following is a form of isolating elements during troubleshooting?

Eliminating possible causes.

What is the binary equivalent to the decimal number "14"?

0000 1110.

The input-to-output power ratio of a coaxial cable that has 1 dB of attenuation is?

1.2589:1.

Before you head out to the customer's location, you must pick up the appropriate equipment and supplies. What should you do before you drive to the customer's location?

Double-check the equipment against your work orders.

Which layers of the Open Systems Interconnection (OSI) reference model are specific to cable networks and are present only between Data Over Cable Service Interface Specification (DOCSIS) modems and the cable modem termination system (CMTS)?

Layers 1 through 4 (Physical Layer, Data Link Layer, Network Layer, and Transport Layer) are applied between the DOCSIS modem and CMTS.

What is impacted by your vehicle's appearance, how it is driven, and how it is parked?

Customer relations

What should be done to correct signal leakage from a drop splitter with a defective cover plate?

Remove and replace the splitter.

When installing IP Voice, you find a high-pass filter at the tap. What should you do?

Remove the high-pass filter.

Which of the following automatically captures the location of leakage data right down to the street address?

GPS assisted leakage measurement instruments.

Which of the following best represents a logical address?

IPv6

What can active signal amplification result in?

It can result in high installation and operational costs for the network.

What is the second step when troubleshooting a network?

Identify the affected area.

Which of the following is a method for controlling expectations?

Identify the source of emotional overload.

You are at a customer's home and you are asking the customer whether the problem is intermittent or constant. Which step are you using from the six-step troubleshooting process?

Identifying the problem.

What could you do if there are no good channel options in the 2.4 GHz band for your customer's 802.11n device?

If available, connect devices with Ethernet.

Which of the following is an industry standard step to take when preparing cable for use with an F-connector?

Pull back the braid so it covers the outside jacket, making sure that no braid or foil is touching the center conductor.

Transport layer processes work with transmission channels using multiplexing and ___________ techniques.

Parallelization.

Communication soft skills and customer satisfaction are linked because?

Part of a troubleshooter's job is to favorably influence the customer's opinion of the cable company.

What is the minimum accepted input signal strength per digital channel on a media distribution gateway?

+5 to +10 decibel millivolts (dBmV).

Out of the 40 channels that Bluetooth Low Energy works within the 2.4 GHz spectrum, how many of those channels are advertising channels?

3

The circuit current is _________ amps in a DC series circuit where R = 40 ohms and E = 120 V?

3

What does electrical interference from electrical wiring or electric motors cause on telephone wiring?

Noise on the line.

Data security, data compression, and ________ are the three main services that the Presentation Layer provides.

Data representation.

What kind of reasoning is described as applying a general statement that you know to be true to a new situation?

Deductive.

Static Internet protocol (IP) address settings are manually configured using the IP address, the Preferred DNS server, the Alternate DNS server, and the Subnet mask settings. Which setting is missing from the list?

Default gateway.

Static routing and dynamic routing are two out of three different types of indirect routing. What is the third type?

Default routing.

When a repeater receives a bit pattern at its input, what does it do?

It generates the same pattern at its output, at a higher power level.

When interpreting test results on the VDV II Pro, what does it mean if both rows of pins on the light emitting diode (LED) display are identical?

It indicates straight-through wiring and that the cable tested is correctly "pinned" and electrically continuous without open or short circuit conditions.

What is an ONU/ONT?

It is a device that converts light from fiber to RF Radio frequency for coaxial distribution into the home.

Encapsulation and protocol headers, decapsulation, and reassembly are three of the four basic techniques used whenever different layers of protocols work together. What is the fourth?

Segmentation.

What could be done if Co-channel interference is found to be the reason for slower data rates?

Switch the network to another channel that is less congested.

Which device cannot solely break up LAN broadcast traffic? If large workgroups present broadcast containment issues, consider VLANs designed as separate routed subnets.

Switch.

What is the main difference between a standard switch and a bridge?

Switches effectively multiply the network's bandwidth.

In the Data Over Cable Service Interface Specification (DOCSIS) hybrid fiber/coax (HFC) access network, an embedded multimedia terminal adapter (EMTA) includes?

Telephone jacks and circuitry to send and receive telephone calls over the DOCSIS network.

What enables the transport of computer data over analog telephone local loops?

Telephone modems.

The term "bel" originated with the early days of?

Telephone.

What determines the amount of content that can be stored on a digital video recorder (DVR)?

The hard drive capacity and the format of the stored content.

The ____________ is the instrument used to measure resistance.

The ohmmeter is the instrument used to measure resistance.

When closing any distribution amplifier housing?

Tighten the bolts to the recommended torque in the proper tightening sequence, using an appropriate torque wrench.

When using an inductive amplifier probe to identify a pair of wires, what is the purpose of shorting the leads of a tone-carrying pair?

The short cancels the induced tone on the pair of wires, thus the correct pair is identified when the tone disappears.

Operational gain is?

The signal level difference between the input signal and the output signal.

In the customer premises, what could cause some dual tone multifrequency (DTMF) touch-tone telephones to have continuous dial tone caused by polarity reversal, but not other DTMF telephones?

The telephone wiring polarity is incorrect, and the customer has a mix of older and newer DTMF touch-tone telephones.

When troubleshooting a commercial property, what is the main reason for removing a reverse output pad from a line amplifier?

To mitigate unwanted noise or ingress leaking back into the hybrid fiber/coax (HFC) plant.

What is the purpose of the ground block?

To protect fragile electronics like TVs and STBs from damaging lightning strikes and power surges.

Which of the following formulas is used to calculate normal attenuation of a certain length of coaxial drop cable?

(Cable length in feet/100) x Cable Attenuation in Decibels (per 100 feet) at frequency (f).

What device can be installed with a DOCSIS modem to enable Internet access to multiple devices in the customer premises?

A router with a built-in multi-jack Ethernet switch.

How are optical splitters used in the forward path?

As passive branching devices that divide an optical signal across multiple output fibers.

Which of the following home automation platforms does not support Wi-Fi devices?

Nexia

What is the maximum amount of wire to be untwisted to maintain CAT-5E electrical characteristics?

1/2 inch.

How much signal is necessary from the subscriber's tap port @ 750 MHz to provide a minimum of 3.0 dBmV to the TV set when the drop is 150 feet of series 6 cable and just one outlet (use 5.65 dB per 100 feet for the attenuation rate and round off to the nearest tenth of a dBmV)?

11.5 dBmV.

You are using a modem emulator to troubleshoot a problem. What is the highest acceptable latency according to DOCSIS requirements?

180 ms.

How many non-overlapping channels are in the 5 GHz band?

24

What is the uV/m level of a -37 dBmV signal leakage measurement at 127.2625 MHz?

37.75 uV/m.

5 kilovolts is the same as?

5kV.

Why is it important to maintain clear tone of voice?

A clear tone of voice can influence the customer's image of you and the company you represent.

What configuration is used to maintain polarity when connecting a telephone to a wall jack and the modular plugs of a line cord?

A cross-pinned configuration.

Which of the following is true when connecting a device to the correct AC to DC power supply?

The input ampere rating is the maximum load the supply will draw on the 110V AC circuit.

How does the insulation displacement connector modular telephone jack differ from the screw-down post modular telephone jack?

The wires are connected using IDC termination slots, which hold the twisted-pair wires.

If the customer is an internet novice, what would be the benefit of saving your company's website as their home page?

They might appreciate having easy access to a website that contains links to their email and other useful or interesting links.

Which tier of service routes voice over Internet protocol (VoIP) packets directly to the public switched telephone network (PSTN) over a managed Internet protocol (IP) network and never over the Internet?

Tier I.

What component is built into the VDV II Pro and is used when testing for length measurements in coaxial and twisted-pair cable?

Time domain reflectometer (TDR).

What is the primary purpose of a 66-block?

To distribute up to 50 unique telephone numbers within a business.

Which of the following is considered the golden rule of customer service?

Treat customers the way you would like to be treated.

_____ is a simple file transfer protocol used to transport data packets over UDP.

Trivial File Transfer Protocol (TFTP).

What type of fiber-optic attenuator is used to check out and optimize network performance by adding loss, typically from 0 to 65 dB, in either stepped or continuous movements?

Variable attenuator.

When troubleshooting a missing channel issue on a media distribution gateway for a commercial property, what should be done?

Verify that an auto program has been run or that the correct commercial TV configuration file in use.

Which of the following is the first step to take when installing IP Voice on a premises with an alarm?

Verify that the customer has notified the alarm company that you will be installing IP Voice service.

If an issue is found with a single set-back box (SBB) or digital terminal adapter (DTA) during the verification process, what is the first thing you should determine?

Whether the issue is physical in nature such as no power, an unplugged High-Definition Multimedia Interface (HDMI), or on a switched outlet.

In troubleshooting, hard skills can be utilized the same way each time, whereas soft skills?

Will depend on the type of problem, the customer, and numerous other factors.

In what part of a building would you typically find punch-down blocks?

Wiring closet

All telephone cables are labeled with either a level or category (CAT) number that designates the cable's performance criteria. How do CAT-1, CAT-2, and CAT-3 cables compare to CAT-5e and higher cables?

and higher are used for voice and data.

Installing a DOCSIS modem and router in a smart panel or utility room is simplified by having what items in the room?

Access to coaxial cable so that it can be routed to the DOCSIS modem, an electrical outlet to power the DOCSIS modem and router, and an unshielded twisted pair (UTP) network cable that is labeled nad has connectors installed using standaard wiring configurations.

Carrier sense multiple access with collision detection (CSMA/CD) is most like which of the following?

An informal conversation in which each person speaks when the opportunity presents itself, but only one person speaks at any time.

What unique business grounding point, a solid copper plate with holes for mounting and grounding equipment, can be found in utility and networking closets?

Buss bar.

The ampere?

Indicates how many coulombs pass a given point during 1 second.

Loose-tube fiber-optic cable is used for what purpose?

It is used as the main cable between the headend and node.

What is the purpose of a fiber demarcation box?

It provides a safe place to splice, split, distribute, store, and cross-connect fiber optics.

What is the main benefit of deploying WDM technology?

It will increase the capacity of the existing fiber networks tenfold without adding any more fiber.

What layers of the Open Systems Interconnection (OSI) reference model are specific to cable networks and are present only between Data Over Cable Service Interface Specification (DOCSIS) modems and the cable modem termination system (CMTS)?

Layers 1 through 4 (Physical layer, Data Link Layer, Network Layer, and Transport Layer) are applied between the DOCSIS modem and CMTS.

What does the service code 411 represent?

Local Directory Assistance.

Which small, network is private to the organization, sharing a common communications line linking together devices such as computers, printers, and other peripherals?

Local area network (LAN).

What is the best Infrared (IR) sensor for a set-back box (SBB) due to their relatively low cost and their ability to be hidden from view?

Prism sensor

When performing a voice cable test using a VDV II Pro and voltage detection shows that you have greater than 30 volts (V) on Pins 3 and 4, what detected service does this indicate?

Private Branch Exchange (PBX).

What is a risk of performing automated measurements on a sample of channels instead of all channels?

Problems in unmeasured channels may go undetected.

What other device factors determine what speeds a device will achieve over a Wi-Fi network?

Processor and storage read/write space.

Which of the following refers to an eight-pin, eight conductor plug and jack capable of supporting Ethernet and telephone?

RJ-45.

What is the Signaling System 7 (SS7) protocol used for?

Telephone network control signaling.

What should be communicated to the customer prior to taking their services offline?

Tell them when you will begin your work and inform them after you are finished.

To break the habit of a negative self-talk cycle?

Tell yourself "not now" and move onto a positive thought whenever negative thoughts occur.

What device is required to attach a non-ISDN device to an ISDN network?

Terminal adaptor (TA).

The first version of the Data Over Cable Service Interface Specification (DOCSIS) was approved as an international standard by what organization?

The International Telecommunication Union (ITU).

What differentiates PacketCable voice over Internet protocol (VoIP) from VoIP service offered by other providers?

The architecture and handling of IP voice packets from the PacketCable managed IP network.

What does a good modulation error ratio (MER) measurement of a quadrature amplitude modulation (QAM) channel with digital television (DTV) artifacts indicate?

The artifacts are created in the hybrid fiber/coax (HFC) network.

A cable gateway can replace which broadband cable operator supplied devices?

The cable gateway could replace a cable modem.

What happens when a router forwards data packets from one network to another network?

The destination address of the router in the framed packet is removed and the packet header address is inspected by the router to determine the next destination address to encapsulate around the packet.

What can be checked on the digital set-top-box (STB) to verify the reliability of the customer's drop system?

The diagnostic page for downstream performance data such as bit error rate (BER) and modulation error ratio (MER).

To determine actual insertion loss on a 2-way splitter, the input level at a particular frequency and the output port levels at the same frequency are measured. What is the actual insertion loss of the output port?

The difference between the splitter's input level and the measured output level of that port.

Electric current is actually produced by?

The drifting movement of free electrons in a conductor.

The forward signal path of the line extender?

The first equalizer is where the frequency-dependent attenuation (tilt) caused by the coaxial cable between the line extender and the previous upstream amplifier is corrected.

When visually identifying correct cable connections for a directional coupler in an attic with a loop-through system, which cable usually comes from the outside wall, which cable typically goes down the wall to the TV, and which cable typically continues on through the attic to another section of the house?

The input cable usually comes from the outside wall, the tap port cable typically goes down the wall, and the output port cable typically continues on through the attic to another section of the house.

What enables assessment of upstream Data Over Cable Service Interface Specification (DOCSIS) channel parameters using the quadrature amplitude modulation (QAM) analyzer function of a signal level meter (SLM)?

The upstream channels from the built-in DOCSIS modem are optimized for the upstream path and the channel parameters displayed by the instrument.

What are the three categories of the fiber-optic cable used to identify the location of the fiber in the network?

Trunk, branch, and drop.

Which powerline protocol is stated to be 100 to 1000 times more reliable that X10?

UPB

Curiosity, malice, and toll fraud are a few types of security problems that this service is vulnerable to?

Voice mail.

Normal current flow results?

When the circuit operates properly and no damage occurs to the circuit components.

When troubleshooting a modular wall jack that is connected to the telephone using an insulation displacement connection (IDC), what should be used to gain electrical access to the wall jack's pins?

A modular plug break-out adaptor (banjo).

Installing a DOCSIS modem and router in a smart panel or utility room is simplified by having what items in the room?

Access to coaxial cable so that it can be routed to the DOCSIS modem, an electrical outlet to power the DOCSIS modem and router, and an unshielded twisted pair (UTP) network cable that is labeled nad has connectors installed using standard wiring configurations.

Which of the following protocols is commonly used in the Session Layer?

Advanced Program-to-Program Communications (APPC).

What forced customers to choose between the integrated entertainment system furniture cabinet and upgraded system components?

Advances in technology, such as color television, upgraded turntables, etc.

Magnetic poles that are _________ will ________ each other when those poles are near each other?

Alike, repel.

During the six-step troubleshooting process, you need to ask the customer questions such as, "Have any other contractors worked at the premises lately?" What step in the process do such questions most closely resemble?

Analyze the situation.

Which part of the DVIS takes an incoming signal and filters out a range of frequencies?

Channel elimination filter.

What should be checked if the DS indicator LED on an embedded multimedia terminal adapter (EMTA) flashes continuously?

Check and diagnose the incoming signal using a signal level meter (SLM).

What are the three types of service level agreements (SLA)?

Customer based, service based, and multi-level.

What functionality is integrated in all modern signal level meters (SLM) to measure specific parameters of a digital modulation carrier containing digital television (DTV) and Data Over Cable Service Interface Specification (DOCSIS) signals?

Digital signal analyzer functionality.

What is a good practice to use when installing an AP in a hospital room or dormitory where people sleep?

Disable the LEDs on the AP and only temporarily enable them when troubleshooting.

A modular plug contains four-, six-, or eight-pin positions. Each position is numbered and is used to terminate a specific tip or ring wire from a quad or twisted-pair cable. How are the pins on a modular jack numbered?

From left to right, with the locking tab down.

Where do Data Over Cable Service Interface Specification (DOCSIS) modems receive their configuration files, billing system messages, and access control messages from?

From the cable modem termination system (CMTS), which interfaces with the operations support system (OSS) and acts as a proxy or messenger that transfers messages and files between the modems and the respective servers.

What does the modulation error ratio (MER) measurement of a quadrature amplitude modulation (QAM) channel tell a technician?

How close the QAM channel is to the cliff where the number of bit errors exceeds the forward error correction (FEC) capacity of the receiver and reception stops.

In an adaptive equalizer display, what do the vertical bars to the right of the incident signal, the eighth bar from the right, represent?

How much equalization is being applied to the channel.

What does the filing of form and reports in a cable operator's public file reflect?

How the cable operator runs their business and their network.

Electromagnetism in a wire states that?

If you wrap the fingers of your left hand around the wire with your thumb pointing in the direction of the electrostatic field, your fingers will point in the direction of current flow.

In a single family residence, the telephone company interface is typically located in which of the following locations?

In the network interface device (NID) on the outside of the customer premises.

You must climb a ladder that is placed against a pole to access an aerial tap. What is one safety rule you should follow in this situation?

Inspect the pole before leaning a ladder against it.

Which of the following, within the TCP/IP model layers, delivers packets to their destination across multiple networks, as does the Open Systems Interconnection (OSI) model Network Layer?

Internetwork Layer.

Although the cables seldom cause a High-Definition Multimedia Interface (HDMI) interoperability issue, why is it still a good practice to swap cables?

It is usually easy and eliminates the HDMI cable as a potential cause of an interoperability problem.

For an embedded media terminal adapter (EMTA) to receive an authorization key for telephone service, what is required of the media access control (MAC) address?

It must be assigned to a customer account in the billing system database which updates the cable modem termination system (CMTS).

After a digital TV (DTV) service problem has been analyzed and possible causes considered, what is accomplished by isolating the various network elements?

It narrows the scope of likely problem sources.

Which of the following best describes the copper cabling that connects many homes and businesses to the nearest CO?

Local loops.

How do you tell which wiring scheme is being used in an 8P8C RJ-45 plug?

Look at the wire colors .

Define the ohm in its relationship with voltage and current.

One ohm is the amount of resistance that will allow 1 ampere of current to flow when 1 volt is applied to the circuit.

Because the spectral density of a quadrature amplitude modulation (QAM) channel is much higher than that of an analog TV channel, what is done to ensure equal power in all channels in a network with analog and digital modulation channels?

Operate the analog TV channels at higher amplitude level than the QAM channels.

According to the ANSI/TIA/EIA-606 color coding guidelines, which color represents the telephone demarcation point in a commercial building?

Orange

A conductor?

Provides a path for the current flow from the power source to the load and from the load back to the power source.

Which of the following does a CO DACS provide?

Provides a semi-permanent path for voice and data signals.

What tool should you use to attach the wires to the IDCs of an RJ-45 jack?

Punch-down tool.

Resistance is _____________________ to the length of a conductor.

Resistance is directly proportional to the length of a conductor.

What is ingress?

Signals leaking into the cable system.

Which of the following non-verbal signs might indicate that the customer is happy with what you are saying?

The customer's pupils are dilated.

The orbital shell that has a maximum electron capacity of 18 electrons is the _______ shell.

Third.

You are at a customer's home and you believe you have solved the problem. When you check to be sure the resolution did not introduce any new problems, which step are you using from the six-step troubleshooting process?

Verifying the Solution.

When installing a modular telephone jack by mounting and wiring the jack using a screw-down post at the customer premises, how much insulation should be stripped from each individual copper conductor with a wire stripper?

1/2-inch to 3/4-inch.

A DC series circuit where R1 = 50 ohms, R@ = 100 ohms, R3 = 183.33 ohms, IT = 0.6 amperes, and ET = 200 V consumes _________ watts of power?

120

Which of the following is a Class C IP address?

192.168.40.15.

What is the maximum signaling rate for a 3SS device (premium laptop)?

195 megabits per second (Mbps).

What year did the current Emergency Alert System (EAS) replace the Emergency Broadcast System (EBS)?

1997.

You are using a modem emulator to test a DOCSIS 3.0 256-QAM downstream signal. What is the minimum acceptable signal-to-noise (S/N) ratio?

33 dB.

What is the voltage in a circuit with 0.8 ampere of current and 100 ohms of resistance?

80v.

A DC series circuit with R1 = 15 kilo-ohms, R2 = 25 kilo-ohms, R3 = 47 kilo-ohms has a total resistance of _______ ohms?

87 k.

Convert 0.893 volts into a power 10 and metric prefix form?

893 x 10^-3V = 893 mV.

A length of coaxial cable of 10dB will experience an input RF signal power loss of ________, with _________ of the signal remaining.

90%, 10%.

Which of the following channels represents a well performing network?

A channel that is utilized more than 80% of the time.

What messages must a cable modem receive from the downstream signal in order to begin a transmitting relationship with the cable modem termination system (CMTS)?

An Upstream Channel Descriptor (UCD) message, a symbol timing message (SYNC), and a bandwidth allocation message (MAP).

You have verified that a new IP Voice installation has no dial tone at the wall jacks. Using the ''divide and conquer'' method, where should you begin troubleshooting?

At the embedded multimedia terminal adapter (EMTA).

Why are the data throughput rates for both downstream and upstream in Data Over Cable Service Interface Specification (DOCSIS) networks asymmetrical?

Because the narrower bandwidths and lower orders of modulation for the return path carriers cause the DOCSIS downstream and upstream data rates to be unequal or asymmetrical.

In analyzing faults at the customer's location, you will need to determine if the problem is localized or encompasses a larger area of the cable system. If the problem is affecting the whole house, how should you proceed?

Begin your isolation at the ground block?

An IP Voice installation requires a specific downstream signal level to work properly. What should the level of the IP Voice downstream carrier be?

Between -15 dBmV and +15 dBmV.

One obstacle to wide-spread adoption of early voice over Internet protocol (VoIP) applications was?

Both calling and receiving parties had to have computers that were turned on and running VoIP software.

Which wiring topology starts at the telephone distribution device, uses one twisted-pair cable to route through a customer premises from one modular jack to the next, uses a separate twisted-pair cable to route a modular jack from another modular jack, and terminates at the last modular jack location?

Bus.

Explain the difference between conductance and resistance and show it in equation form?

Conductance is mathematically the reciprocal of resistance and be shown is equation form as Conductance = 1/resistance.

When replacing a splitter to resolve a digital TV (DTV) service problem, what does confirming the splitter output levels before attaching the output connectors do?

Confirmation reinforces the technician's confidence that the problem will be resolved by replacing the splitter.

Which application is associated with the well-known port number 53?

Domain Name Server (DNS).

With the Fluke TS19 telephone test set, what does placing the Hi Z/Ring/Talk switch in the "Talk" position establish?

Establishes an off-hook condition for dialing and talking.

_______________ can be the desired energy output of a circuit load, or it may be a warning of excessive current in the circuit.

Heat can be the desired energy output of a circuit load, or it may be a warning of excessive current in a circuit.

What parameter is critical in an OTDR when testing a PON with significant splitters losses?

High dynamic range

What does the two-way capabilities of the High-Definition Multimedia Interface (HDMI) enable to protect full-resolution high definition television (HDTV) content from being copied and sold illegally?

High-bandwidth digital content protection (HDCP).

Which type of fiber topology used in a PON places the PON splitters at the headend while providing one designated fiber for every customer premise?

Home-run.

How does Internet protocol (IP) multicast differ from IP broadcast?

IP multicast traffic is only sent to specific modem addresses on the network; IP broadcast traffic is sent to all modems on the network.

What internet protocol (IP) connectivity modems are supported in DOCSIS 3.0 and 3.1?

IPv4 only, IPv6 only, alternate provisioning mode (APM), and dual-stack provisioning mode (DPM).

What special band, in the 5 GHz band, is located on Channel 165?

ISM band.

When troubleshooting a drop splitter with defective port connections, which of the following is true about a bad connection at the splitter's input port?

It affects all TVs.

Which of the following is a feature of the signal level meter (SLM)?

It can be used in sweep mode to identify instances of ingress?

What happens when a customer's telephone number is ''ported''?

It is retained in the new IP Voice installation.

What are the advantages of loose buffer tube fiber?

It offers the best protection for the fibers under high pulling tension and moisture with its fiber-coated gel.

What type of security does the baseline privacy interface (BPI) protocol provide?

It prevents a cloned modem from full, illegal, access to the network.

What is the purpose of the SDU?

It provides surge protection, a test jack, circuit protection, wiring management, and fiber termination.

A cable modem emulator is a good choice for troubleshooting IP Voice or HSD service. What is one reason for this?

It uses Data Over Cable Service Interface Specification (DOCSIS) architecture to communicate with the headend.

Which layers of the Open Systems Interconnection (OSI) reference model are specific to cable networks and are present only between Data Over Cable Service Interface Specification (DOCSIS) modems and the cable modem termination system (CMTS)?

Layers 1 to 4 (Physical Layer, Data Link Layer, Network Layer, and Transport Layer) are applied between the DOCSIS modem and CMTS.

When using the optical time domain reflectometer (OTDR) to troubleshoot fiber-optic cable, locating a reflective event means?

Light intersects with a material (like air), causing it to bend differently than if it was traveling with in the fiber.

How should a technician check for crosstalk in a multiline telephone installation?

Listening for tones on one line while dialing out on another line.

What features were introduced with the 3.1 version of the Data Over Cable Service Interface Specification (DOCSIS 3.1) to increase the downstream and upstream data throughput?

Orthogonal frequency division multiplexing (OFDM) and low density parity-check (LDPC).

What are two features that were added in Data Over Cable Service Interface Specification (DOCSIS) 3.1 to extend the viability of hybrid fiber/coax (HFC) networks into the next decade?

Orthogonal frequency division multiplexing (OFDM) and low-density parity-check (LDPC).

What features were introduced with the 3.1 version of the Data Over Cable Service Interface Specification (DOCSIS 3.1) to increase the downstream and upstream data throughput?

Orthogonal frequency division multiplexing (OFDM) and low-density parity-check (LDPC).

What are some of the standards that came out of building the digital public switched telephone network (PSTN)?

Pulse code modulation (PCM), digital signal (DS) hierarchy, and the T-carrier trunk hierarchy.

How is silver satin cable used to connect telephone equipment to wall outlets typically pinned?

Reversed at opposite ends, or cross-pinned.

Which Open Systems Interconnection (OSI) reference model layers does the Media Access Control (MAC) Layer in the Data Over Cable Service Interface Specification (DOCSIS) overlap so that the media access control (MAC) can be used by the cable modem termination system (CMTS) to differentiate between cable modems?

The Physical and Data Link Layers.

What does a set-top box (STB) diagnostic page of a quadrature amplitude modulation (QAM) channel showing signal-to-noise ratio (SNR) near or below 30 dB indicate?

The QAM channel quality is on the edge for reliable reception, and the source of the problem is likely in the distribution network or customer premises.

What test equipment measures cable lengths and located faults on both twisted pair and coaxial cable?

The Time Domain Reflectometer (TDR).

What test equipment automatically identifies specific wiring problems on 4-pair UTP/STP patch cords and station wiring?

The UTP/STP test set.

What prevents the electrons that orbit an atom's nucleus at high speeds from breaking away from the nucleus due to centrifugal force?

The attraction between the positive nucleus and the negative electron.

The Cable Communications Policy Act of 1984 mandates that cable operators must hold outreach programs such as job fairs, internships, mentoring, and interaction with schools and community groups. What other employment practices are mandated by this act?

The cable operator must make their Equal Employment Opportunity (EEO) procedures available for public inspection on their websites.

Which gauge wire has approximately four times more cross-sectional area than AWG 18?

The cross-sectional area of AWG 12 is approximately four times that of AWG 18.

The majority of ingress is caused by which of the following?

The customer.

What is the network system to which the gateway at the cable modem termination system (CMTS) is connected?

The public switched telephone network (PSTN).

In the PacketCable architecture, what is the purpose of the embedded multimedia terminal adapter (EMTA)?

To provide an interface between the customer's telephone and the hybrid fiber/coax (HFC) network of the incumbent telephone operator.

What is the role of a franchise authority?

To provide the permissions necessary to allow a cable operator to use the public right-of-way within the franchise area, in order to access and connect customer premises.

Why must an internal battery be installed in an embedded multimedia terminal adapter (EMTA)?

To qualify as a carrier class telephone service and enable uninterrupted operation during short power outages.

After mounting and wiring a new modular telephone jack in a star installation, where should the unshielded twisted-pair (UTP) cable from the new modular jack be connected?

To the tip and ring screw terminals or insulation displacement connection (IDC) on the telephone distribution device.

When a test instrument indicates measurements that fall outside of minimum or maximum requirements, why should a technician recognize what the failed measurements are?

To troubleshoot and resolve the cause of failed measurements.

Why is it a good practice to review the service work order with the customer before beginning a high-speed data (HSD) service installation?

To verify account information and to conform the HSD service order.

Which of the following is an example of a Transport Layer protocol?

Transmission Control Protocol (TCP).

In a magnetic material?

Where only some of the magnetic domains are pointing in the same direction, the magnetic field is weaker.

When examining a power cord for damage, what part of the cord is the most vulnerable?

Where the cord meets the plug.

In a T568A straight-through wiring scheme, what color is pin 5?

White/Blue.

The letter S in the acronym RESPECT (for showing respect to customers) stands for sincere and means?

You are empathetic and want to help the customer achieve better experience.

Which of the following statements best describes iControl?

iControl is the User Interface (UI) and the User Experience (UX) of home automation for the majority of all US cable service providers.

Elements that are called conductors?

Have very few valence electrons.

Define resistance?

Resistance is the opposition a material or device offers to the flow of current.

One-tenth bel or 1dB is?

The 10th root of the 1 bel ratio.

What is the minimum Wi-Fi signal strength for reliable, timely delivery of streamed Internet protocol television (IPTV) content?

-67 to -65 decibels milliwatt (dBm).

After entering "arp" into the MS-DOS command line, which of the following switches would display the ARP cache?

-a or -g.

IT = __________ amps in a DC series circuit where R1 = 10 ohms, R2 = 20 ohms, R3 = 30 ohms, R4 = 40 ohms, and ET = 50 V.

.05

20 milliamperes is the same as _________. (Remember, 1 milliampere = 0.001 ampere.)

0.02 amperes.

A 1 mV decrease in a signal level of 40 dBmV is approximately equivalent to a decrease in level of?

0.1 dB.

How much current would an applied voltage of 60 volts cause in a circuit of 300 0hms of resistance?

0.2A.

What is the total voltage of a DC series circuit where ER1 = 20V, ER2 = 45V, and ER3 = 57V?

122 V.

The input-to-output power ratio for 2 bels of similar impedance cable is?

100:1.

Which of the following are the aeronautical frequency bands?

108 - 137 and 225 - 400 mHz.

Which of the following is also called "Thicknet" or "yellow wire" and includes two layers of foil shielding as well as an additional copper mesh shield?

10Base5 cable.

For standard server racks, what is 1U equivalent to vertically?

1.75 inches.

According to 10BaseT wiring rules, what is the maximum segment length without a repeater?

100 m.

When using an optical coupler, a desired split ratio of 40/60will result in an insertion loss of?

2.7 dB.

_______ watts of power are consumed in a circuit with applied voltage of 60 volts and a load of 150 ohms?

24.

R2 = ________ ohms in a DC series circuit where R1 = 33 ohms, R3 = 47 ohms, R4 = 56 ohms, and RT = 197 ohms?

61.

The deployment of ___________ for use as a public safety communications technology will greatly increase the importance of controlling and reducing leakage and ingress issues?

700 MHz LTE.

Which of the following is the frequency allocation dedicated specifically to public safety communications?

700 MHz Long Term Evolution (LTE).

When checking for continuity of coaxial cable used in the broadband industry using the DC loop resistance, which of the following readings on the digital multimeter (DMM) indicates the cable is good?

75 ohms plus the correct DC loop resistance.

Which of the following is a correct definition for a type of circuit graphic?

A block diagram is a simplified outline of an electrical system that shows circuits or parts as rectangles and other shapes.

You discover that an amplifier is blocking the return path. What type of amplifier is it?

A One-Way House Amplifier.

You are using a signal generator connected to a wall plate to troubleshoot the drop. You discover that there is no signal at the ground block. What is one possible reason for this, assuming all the equipment listed below is in good working condition?

A high-pass filter is installed between the wall plate and the ground block.

Why is a leakage detector preferable to a signal meter for detecting leakage?

A leakage detector has an increased sensitivity to weak signals.

Generally speaking, a wide area network (WAN) can be described as?

A network comprised of several local area networks (LAN) and metropolitan area networks (MAN) interconnected into a single network covering a large geographic area.

What are the three basic elements of an electrical circuit?

A power source, a load, and the connecting conductors.

Which of the following is implemented over a public telecommunication switching system, such as a frame relay cloud?

A public network.

Which is the best amplifier to use when the digital set top box, cable modem, or embedded multimedia terminal adapter (EMTA) is unable to consistently and reliably transmit information back to the headend because of a long cable drop run?

A return path (reverse or upstream) amplifier.

In accordance with requirements set by the National Electrical Code (NEC), several different cable types can be used for residential inside wiring. What is a CMR cable?

A riser-rate unshielded twisted-pair cable.

The leakage detector's calibration can be verified using the system's leakage carrier, a signal level meter, and?

A variable attenuator.

Acceptable leakage limits per the FCC specify a maximum acceptable field strength of 15uV/m (micro-volts/meter) at 30 meters for frequencies?

Above 216 MHz.

Admission control protocols, authentication mechanisms, and _______ are three ways communication networks provide admission control.

Access Control Lists (ACLs).

It's important to be safe and courteous when you park your vehicle. Where is the best place to park your vehicle?

Along the curb, where you can pull forward.

Flux lines?

Always curve around through the body of the magnet to form complete loops.

What information can be derived from a system map?

Amplifiers and nodes with their levels and locations.

The return amplifier?

Amplifies the return signals for transmission to the next return amplifier upstream relative to the forward path.

A passive component that reduces signal amplitude equally at all frequencies in a distribution amplifier is?

An attenuation pad.

What is the likely problem when there is dial tone on one phone connected to an outlet, but not on two other phones connected to two different outlets?

An open circuit caused by a break in a conductor, poor contact in a modular connector, or an incorrect wire connection.

What non-Wi-Fi device utilizes 20 MHz of spectrum, which is nearly the same as a Wi-Fi network and, due to its heavy utilization, can cause a Wi-Fi network to stop working entirely?

Analog wireless security camera.

Into what type of AC power connection should an embedded multimedia terminal adapter (EMTA) be plugged?

Any switched outlet.

What type of applications are error vector magnitude (EVM) expressions best suited?

Applications that have small random noise-like errors.

Which coaxial connector provides better isolation between the center conductor and the coaxial shield?

BNC (Bayonet Neill-Concelman) connector.

Which is a network management and utility software that is typically used by network administrators and information systems personnel when the network is unused or lightly used, often in the middle of the night?

Backup and recovery utilities.

Why were digital terminal adapters (DTA) originally installed in the customer premises?

Because the customer wanted service to their analog TV and subscribed to basic-only service.

Values expressed in dBmV progress in a nonlinear mV scale because?

Because they are based on the logarithms of power ratios.

Which protocol is best for exchanging data over short distances?

Bluetooth

If the telephone wiring is in the bus topology and the twisted-pair cable tester is connected at the embedded multimedia terminal adapter (EMTA) with the remote unit connected to the last outlet in the loop, what is the quickest way to locate the incorrectly wired outlet if the tester indicates a wiring error?

Break the loop into smaller sections and retest the two sections to identify which one has the wiring error. Continue to divide the section with the error into smaller sections until the wiring error is identified.

Bridges and Layer 2 switches filter traffic in which way?

By evaluating the destination MAC address in each frame and switching each frame to the port that leads to the destination frame address.

Some cable operators charge an additional fee when the amount of downloaded data during a billing cycle exceeds a prescribed limit. How might a customer unknowingly approach these limits?

By streaming and downloading high-content data, such as movies and TV shows in high-definition (HD) throughout the billing period.

When performing a wire identification test, using a 77HP-G tone generator and the 200EP-G inductive amplifier probe to locate a tone signal at any point along a cable, distribution device, or at a modular telephone jack, how do you identify the wire?

By touching the tip of the inductive amplifier probe to the signal-carrying conductor.

Which of the following twisted-pair cables is rated for a maximum data rate of 10 Mbps?

CAT-3.

Which unshielded twisted-pair (UTP) category (CAT) supports data rates up to 10 gigabits per second (Gbps) ?

CAT-6, CAT-6A, and CAT-7.

Which catergory of cable is best suited for datacenter and server-to-switch links?

CAT-8

What is the first thing to look for when telephones within the business experience an issue where there is no dial tone and the embedded multimedia terminal adapter (EMTA) is powered up?

Check dial tone directly from the EMTA using a telephone test set.

After verifying the dial tone from the embedded multimedia terminal adapter (EMTA), what is the next step in verifying the EMTA's operational status?

Checking that the EMTA dials and connects properly by making local and long distance calls.

What should the technician do if the main telephone port on the embedded multimedia terminal adapter (EMTA) has a failure due to faulty provisioning?

Contact the call center and make sure that the EMTA's media access control (MAC) address matches the address in the operator's database.

What does a hole in the center of the quadrature amplitude modulation (QAM) constellation symbol error cloud indicate?

Coherent interference from ingress, or a beat from another channel modulator, landing inside the QAM channel.

In a Data Over Cable Service Interface Specification (DOCSIS) network, why is the data throughput over the return or upstream path typically less than the throughput of data over the forward or downstream path?

Compared to the downstream path, the narrower bandwidths and lower orders of modulation used to transport data over the return path cause the downstream and upstream data throughput to be unequal or asymmetrical.

What criteria does the Data Over Cable Service Interface Specification (DOCSIS) certification process ensure?

Compliance with the DOCSIS standard and interoperability between suppliers.

You need to access the tap that is in the neighbor's fenced backyard, but the neighbor refuses to grant permission to enter their backyard. What is the best policy to follow?

Comply with the neighbor's wishes and notify your supervisor.

A constant bit rate (CBR) telephone system is considered to be circuit-switching technology because the analog audio signal is

Converted into a digital DS0 circuit and switched to other cable telephony customers or to the telephone company's network.

The magnetic field?

Created by a straight piece of wire is weaker than that created by forming loops of wire.

Which of the following can be a consequence of over-tightened connectors

Damage to the connector or mating surface.

What Protocol Independent Multicast (PIM) is designed to support large, densely populated multicast groups?

Dense Mode (DM).

Once you have restored the operations of the customer's service, how should you communicate this to the customer?

Describe the nature of the problem and what you did to correct it.

What is the first step in prequalifying (i.e., inspecting and evaluating) a new customer's existing broadband cable service?

Determine whether the customer has cable video service.

Which device allows a percentage of the main input signal to be tapped off for sampling, amplifying, or feeding into other devices?

Directional coupler.

Using your foreign voltage detector, you get a reading of more than ''50V'' when you test for stray voltage near the tap. What should you do?

Don't touch anything and advise the customer and your supervisor of the situation.

What voice issue is a normal occurrence on the PSTN and other voice networks, and occurs as a result of network delay and the two- to four-wire conversion process?

Echo.

Digital artifacts can be caused by impulse noise. What is impulse noise?

Electromagnetic signal interference produced by power-line transients, motor arcing, household appliances, or electrical systems without shielded wiring.

A minimum acceptable signal level of 0 dBmV at a TV set input?

Equals 1 mV across 75 ohms.

The IEEE 802.3 standard defines which of the following?

Ethernet.

In a PON FTTx network, which OSP device contains fiber test points that will minimize service disruption to customers?

FDH

Forwarding, Learning, and _______ are three important functions provided by a bridge.

Filtering.

What term describes the number of wave crests that pass a fixed point during a particular period of time?

Frequency.

How does a DOCSIS modem receive its Internet Protocol (IP) address?

From a dynamic host configuration protocol (DHCP)mserver thaat provides the CMTS with the modem's IP address, which is forwarded to the modem during initialization.

In unshielded twisted-pair (UTP) cable, what is the term that describes when an information-carrying conductor makes contact with a grounded conductor?

Ground fault.

________ is an application that manages Internet resources and transmits them in response to requests from Web browsers.

HTTP server.

In data networking, this term is defined as "Signals may flow in either direction, but not simultaneously".

Half-duplex.

A semiconductor material?

Has 4 valence electrons.

A permanent-magnet loudspeaker?

Has a cone that moves back and forth in relation to the varying current of the original sound.

What Fast Ethernet standard can send Ethernet frames at 100 Mbps over Category 5E UTP or fiber optic cabling?

IEEE 802.3u.

Which of the following are kept in a computer's Address Resolution Protocol (ARP) cache?

IP address and MAC address.

What signal leakage information and measurements must be included with the annual reporting to the FCC?

Information carried on signals in the aeronautical bandwidths.

Entertainment cabinets with doors made of green glass block which of the following from electronic components?

Infrared (IR) remote sensors.

The power source?

Is the part of an electrical circuit that provides a difference of potential.

What is the process for checking for ingress at a drop splitter at the customer premises?

Inspect the splitter and confirm that all of the splitter's F-connectors are properly wrench-tightened by using a 7/16-inch torque wrench.

What should you always do when working with old telephone wiring?

Inspect, clean, test, and label every part of the active telephone infrastructure within the business.

When setting up a commercial TV, which feature allows you to change the access code to enter the installer menu?

Installer sequence.

Which of the following is an open source protocol that utilizes mesh networking to relay commands to connected devices within the customer premises?

Insteon.

Which protocol has four numeric fields, each 8 binary bits long, called "octets"?

Internet protocol version 4 (IPV4).

Why do digital modulation channels have measurable analog parameters?

It is based on modulating an analog RF carrier with digital data.

What is true about using a premade fiber-optic pigtail for splicing to patch panels or terminal equipment?

It is faster and more reliable than installing connectors in the field.

Which of the following is true of fiber-optic pigtail splicing?

It is faster and more reliable than installing connectors in the field.

What are the characteristics of ITU-T G.657 BIF?

It is flexible for installation in small spaces and has a small bend radius of 7.5 mm or 10 mm.

Which Quality of Service (QoS) parameter is defined as a variable delay that is measured in a number of ways, such as a percentage of the maximum network delay (+/- 10 percent), or as a variation above or below the average network delay (+/- 10 ms of the average network delay over a period of time)?

Jitter.

What is the best way to gather information to create a clear and concise problem statement?

Leverage multiple sources for information by talking to the customer's office staff, maintenance staff, and those impacted by the problem.

What type of loss occurs in a transmission line when the fiber-optic bend radius decreases?

Macrobending.

Which of the following is a characteristic of a good listener?

Makes eye contact with the customer.

What functionality do many Blu-ray players have, besides playing back discs?

Many Blu-ray players have built-in media streaming capabilities through a wired or wireless network connection.

An optical power meter (OPM) is used to?

Measure the power in an optical signal.

This unique ID number is coordinated by the Institute of Electrical and Electronics Engineers and is used by only one network interface card anywhere in the world.

Media access control address (MAC).

When checking the in-channel frequency response (ICFR) of a quadrature amplitude modulation (QAM) channel in the customer premises, a frequency response with a repetitive ripple is a symptom of what?

Micro-reflections.

What are the units that can be used to represent signal level values?

Millivolt (mV), decibel (dB), and microwatt (uW), or nanowatt (nW).

By taking control of the expectations you have, you are?

More likely to improve your motivation and be a better problem solver.

As part of the Cable Television Consumer Protection and Competition Act of 1992, what can an over-the-air (OTA) broadcast station choose for carriage on a cable operator's network in the same market?

Must-carry or retransmission consent.

If a leak is at an amplifier location, which antenna would be best for more precise determination of the exact source?

Near field probe.

Why should you take the time to take notes and accurately record data at each job location?

Notes and recorded data are tools that can help you accurately remember events at a site that can help you determine a plan of action or evaluate the decisions you made.

According to the North American Numbering Plan (NANP), what does the "803" in 803-550-0000 represent?

Number Plan Area.

Which PON element uses patch panels?

ODN.

When inserting conductors into modular plugs on a crossover telephone cord, how should the conductor colors be crimped on each end of the cord?

One end: Yellow and green for Pair 1, and red and black for Pair 2. Other end: Green and yellow for Pair 1, and black and red for Pair 2.

Most line extender housings have?

One input port for receiving the forward RF signals and one or two output ports for distributing the amplified RF signals.

When checking for ingress at the tap, when would you replace the drop cable between the ground block and the customer's tap?

Only if necessary as a last corrective measure.

Which solution is more economical than using regular long distance service and enables companies to route telephone call over their data network?

Packet telephony.

Which MS-DOS command-line utility is the quickest and easiest way to evaluate whether a computer is up and running, and attached to a TCP/IP network?

Ping.

Which command line entry is used for testing latency, packet loss, and the general health of the modem?

Ping.

The line extender amplifier housing has?

Plug-in connectors that direct the incoming forward RF signals from the input port to the RF amplifier module and the outgoing amplified signals from the amplifier module to the output port.

Which protocol has a header of 5 bytes and a trailer of 3 bytes?

Point-to-Point Protocol.

What type of routing allows network administrators to specify additional information sources for the routing table and network model?

Policy-based.

Power line carrier technology is communicated over which of the following mediums?

Power lines

Which survey has information about cabling in walls, splitter locations, and closet locations?

Pre-installation survey.

What is the best approach to repairing an aerial fiber-optic drop cable for FTTx applications?

Replace the entire section of fiber drop cable.

The line extender amplifier?

Requires the AC input voltage typically to be received through the port seizure screw connection.

Which of the following connectors uses a bayonet coupling mechanism?

ST Connectors.

When troubleshooting a digital TV (DTV) authorization issue, what can be verified using the set-top box (STB) diagnostic page?

STB reception of authorization message data.

Which type of set-top box (STB) operates more like Data Over Cable Service Interface Specification (DOCSIS) cable modems with return channels on the same frequencies used for cable modems?

STB with DOCSIS Set-top Gateway (DSG) client software and embedded DOCSIS modems.

Scenario: You have finally identified the affected area and, as you proceed to the next step, you realize that since this is a new installation, there is no previous time that is known when everything worked. The installation itself is the only "change" and the third troubleshooting step. What step is next?

Select the most probable cause.

What should a technician do if Wi-Fi signal strength appears to be too low for what the customer is trying to use the network for?

Set expectations with the customer by explaining the signal strength issue.

What should be checked as a possible cause of hum on a customer's telephone line?

Shielding problems in the station wiring, poor terminations, or poor grounding and bonding connections.

When adjusting amplifier controls, remember that?

Signal level controls compensate for slight variations in the input signal level caused by temperature changes and by signal loss from coaxial cables and passive devices.

Which of the following devices is used to determine whether a cable is acceptable for IP Voice installation?

Signal level meter (SLM) with cable modem emulator test functions.

What three basic functions does a telephone switch do when it processes calls?

Signaling, routing, and switching.

The metal that has the greatest conductance is?

Silver.

During a conversation with a customer, which of the following can be interpreted as a neutral, open position?

Standing with legs slightly apart and feet in the direction of the other person.

What is the justification for state-issued franchises in place of local franchises?

State-issued franchises are typically much easier to renew and manage because there is one main authority (instead of many local franchise authorities.

Which of the following data services does a business use because it works best for dedicated services, such as hosting a website or Internet server, email, and file transfer protocol (FTP)?

Static Internet protocol (IP) addressing.

The feature of a PBX system that creates a log of all incoming and outgoing calls is called?

Station Message Detail Recording (SMDR).

Which step in the troubleshooting process requires a discussion with the customer to gather more detail about the problem?

Step 1: Identify the problem.

Which of the following wiring is used to connect a speaker to an audio source?

Stranded 2-Wire.

Which of the following is one of the common sources of over-the-air ingress?

Strong over-the-air television channels.

________ allows network administrators to break up a single network address into smaller network addresses, creating router-connected network segments, all with their own unique network address space.

Subnetting.

When helping a new customer set up email for the first time, what suggestion should you make regarding the customer's email login ID and password?

Suggest that they write their email login and password down and keep it in a safe place incase they forget it.

You examine both ends of a twisted-pair cable and see that pin 1 on the connector at one end of the cable is a white/green wire, and pin 1 on the connector at the other end of the cable is a white/orange wire. What type of wiring scheme is this?

T568A crossover.

What is the most common wiring scheme in residential applications due to its backward compatibility with telephone wiring standards?

T568A.

Which of the following is the best way to speak with a customer?

Talk to the customer using nontechnical terms.

When troubleshooting a telephone service problem in the customer premises, what is the best way to identify the problem?

Talk to the customer, ask what they are experiencing, and listen carefully to their answer.

Which ITU-T H.323 packet multimedia standards component is used for real-time bi-directional multimedia communications, and can either be a PC or a stand-alone device running an H.323 protocol stack and the desired multimedia applications?

Terminals.

What should you advise the customer before beginning installation of IP Voice?

That service disruptions may occur.

The first version of Data Over Cable Service Interface Specification (DOCSIS) was approved as an international standard by what organization?

The International Telecommunications Union (ITU).

What cross-sectional dimension standard is used for wire manufactured in the United States?

The American Wire Gauge (AWG) is the cross-sectional dimension standard used for wire manufactured in the United States.

The cable modem termination system (CMTS) and the embedded multimedia terminal adapter (EMTA) are in constant communication. What happens when the CMTS receives return carriers that are significantly higher than normal?

The CMTS instructs the EMTA to reduce its transmit power.

Which Data over Cable Service Interface Specification (DOCSIS) layer is used by the cable modem termination system (CMTS) to differentiate between cable modems?

The DOCSIS Media Access Control (MAC) Layer.

What does it mean when the embedded multimedia termination adapter's (EMTA) Online light emitting diodes (LED) is blinking fast during registration?

The Data Over Cable Service Interface Specification (DOCSIS) cable modem is acquiring an upstream lock.

What is the one main function of the FDH?

The FDH provides effective fiber management by grouping splitters into local serving areas.

What Open Systems Interconnection (OSI) reference model layers does the Media Access Control (MAC) Layer in the Data Over Cable Service Interface Specification (DOCSIS) overlap so that the media access control (MAC) can be used by the cable modem termination system (CMTS) to differentiate between cable modem?

The Physical and Data Link Layers.

Which wiring standard is used in all modern ethernet data cables, jacks, and connectors?

The Telecommunications Industry Association /Electronics Industries Alliance (TA/EIA) 568 B Standard.

Where should the embedded multimedia terminal adapter (EMTA) be connected to during a cable telephone installation where there is a monitored alarm system?

The alarm system before connecting to the customer's telephones to eliminate the possibility of disabling the alarm by taking a phone off-hook.

If there is no signal on the input cable to the second directional coupler in a loop through drop system, what is the likely cause?

The output cable of the first directional coupler's output port was disconnected.

What happens to the resistance of a conductor when its length is doubled?

The resistance of a conductor is doubled when its length is doubled.

Why does the information in set-top box (STB) and modem diagnostic screens often appear cryptic to a customer?

The screens use initials, acronyms, and jargon intended for people that are familiar with the product.

Why is switching the Wi-Fi frequency of a streaming media player to the 5 gigahertz (GHz) band a possible solution to avoid interference from neighboring networks?

The signal propagation at 5 GHz is lower and interference from neighboring networks is less likely than at 2.4 GHz.

Which wiring color code is used for the ring connection and tip connection in a four-pair, unshielded twisted pair (UTP) cable?

The solid colored wire is the ring; the white wire with the stripe or dots is the tip.

When analyzing a problem, what can the technician learn by asking the customer to show or demonstrate the problem?

The symptoms of the problem can be viewed, and any unusual screens or customer entries can be identified.

The "bypass AC current capacity" is?

The total AC current the line extender amplifier can pass through to other active devices.

What is the relationship between VHF ans UHF leakage and ingress?

There is little or no relationship between VHF and UHF leakage and ingress.

Which of the following is true about 110-type punch-down blocks?

They are used to connect data jacks to service provider cabling.

What is a possible solution for a customer having intermittent one-way telephone calls?

Tighten all RF connectors and terminate unused outlets, as this will prevent noise or ingress from intermittently entering the return path.

Why is it important to keep a company vehicle well stocked with the required supplies and equipment?

To ensure installations can be completed.

When setting personal expectations before arriving at a job, which part of the UPDATE method helps you keep in mind that what the customer expects may differ from your expectations, so it is best to try to determine their expectations in advance?

Understanding the customer's expectations

Which wiring configuration is only used for voice systems and should never be used when wiring modular data plugs or jacks?

Universal Service Order Codes (USOC).

What should you do if a client device keeps defaulting to the 2.4 GHz network over the 5 GHz network?

Use different service set identifiers (SSID) for each network.

How should the digital multimeter (DMM) be used to troubleshoot problems in the telephone wiring?

Use the voltmeter function; both the network interface device (NID) and the embedded multimedia terminal adapter (EMTA) provide a steady on-hook voltage.

An Application Layer process needs to transmit data with as little overhead as possible. The application protocol provides error detection and recovery if the data is lost. What Transport Layer protocol should this process use?

User Datagram Protocol.

Values expressed in dBmV that are preceded by a minus sign (-) represent?

Values of voltage less than 1 mV across 75 ohms.

After resolving the problem with the premises wiring issue, which of the following is the next step in the six-step process that the technician should take?

Verify that the problem has been resolved and that phone service is running perfectly on all phones.

Which of the following actions are appropriate when first approaching the customer?

Verify the service to be performed during this visit.

What is unique about WDM-PON?

WDM-PON deployed in a greenfield system allows each subscriber to get their own designated wavelength.

When do the telephone ports on the embedded multimedia terminal adapter (EMTA) receive their Internet protocol (IP) addresses and configuration files?

When the Online indicator is illuminated, which is after the modem side of the EMTA receives its IP addresses and configuration files from servers in the headend.

What is the last step in a cable modem's registration?

When the cable modem termination system (CMTS) receives a registration acknowledge (REG-ACK) message confirming the modem's registration.

To create an electromagnet?

Wrap a coil of insulated wire around an iron bar and pass an electric current through the wire.

Which protocol started out as a power line-based system utilizing the existing power lines within a home and eventually gave way to wireless/wired combination systems?

X10.

What is the first thing a customer sees and, therefore, becomes the basis of their first impression of you?

Your appearance.

What determines the overall quality of a stable Internet service?

Zero percent packet loss and a stable ping time.

Which of the following ZigBee devices do not have the ability to route commands and can only send and receive commands?

ZigBee End Device.

Select your answer for the following questions from AWG 12, 14, or 18. a. Which wire has the smallest cross-sectional area? b. Which wire has the greatest resistance per foot? c. Which wire will carry the most current?

a. AWG 18 b. AWG 18 c. AWG 12.

How much bandwidth in a T1 circuit is allocated for control information?

8 Kbps.

Which of the following is defined as a loss in signal amplitude, or strength, that occurs as a signal passes through a transmission medium and interconnecting devices?

Attenuation.

Some set-top boxes with poor shielding can cause which of the following problems?

CB or Ham radio interference and ingress on all cable channels.

When troubleshooting a problem within a commercial property, what group of people should you leverage for help?

Customer on-site Information Technology (IT) staff.

Which of the following SIP functions is defined as "SIP determines if an endpoint is available and willing to participate in a call"?

Determining endpoint availability.

Which step in the six-step troubleshooting process uses the information that was gathered to identify the cause of the problem and find the most likely solution?

Diagnose the symptoms.

During which step of the six-step troubleshooting process for a digital TV (DTV) service problem are quadrature amplitude modulation (QAM) channel measurements typically taken?

Diagnosing symptoms.

Which calling feature allows customers to prevent the reception (ringing) of calls from specified telephone numbers?

Call block.

Which category of wiring reduces both Near-End Crosstalk (NEXT) and attenuation due to larger-gauge conductor?

Category 6 (CAT-6).

Which two layers of the Open Systems Interconnection (OSI) reference model are combined in the transmission control protocol/Internet protocol (TCP/IP) model Network Access Layer?

Data Layer and Physical Layer.

A symbol?

Is a simple line design used to represent a component or device in a schematic circuit diagram.

The load?

Is the part of the electrical circuit that uses the electrical energy provided by the power souce to carry out some desired function.

What are the FCC requirements regarding leakage monitoring?

Quarterly monitoring and annual reporting.

What credential server do WPA or WPA2 encrypted APs use to compare credentials prior to allowing a user to authenticate to a network?

RADIUS server.

Which of the following requires a laser transmitter?

Single-mode fiber.

What is happening in step 8 of the SS7-VoIP Gateway Call Progress?

The destination SSP rings the destination subscriber telephone set.

The term voltage normally refers to?

The measurement of the difference in potential between two charges.

When measuring inadequate port-to-port isolation in a drop splitter, the higher the amount of isolation between the splitter output ports?

The less chance of passing radio frequency (RF) interference from one TV set to the other.

If a network contains an active loop, what problem can occur?

The network becomes congested with duplicate frames.

In a DC series circuit?

The same amount of current flows through each component.

What is the likely problem if the DS indicator on an embedded multimedia terminal adapter (EMTA) continuously blinks slowly and never progresses to another stage?

There is either no Data Over Cable Service Interface Specification (DOCSIS) carrier or the DOCSIS carrier is not being recognized by the EMTA.

What must a technician be aware of when analyzing a digital TV (DTV) problem?

There is frequently more than one contributor to a specific DTV service problem.

Through which resistor in a DC series circuit where R1 = 10 ohms, R2 = 15 ohms, R3 = 20 ohms, and R4 = 5 ohms is the greatest current flowing?

They all have the same amount of current flowing through them.

What exemption for proof-of-performance (POP) testing does the Federal Communications Commission (FCC) allow cable networks having less than 1,000 customers?

They are exempt from performing POP testing, but if requested by the FCC, they must be able to prove compliance with the minimum technical criteria.

Other than proving compliance with the Federal Communications Commission (FCC) requirements, what are some other benefits of regular signal leakage monitoring and repair?

Tighter networks, which allow a smaller amount of signals to leave the network and less interfering signals into the network.

Why is it important that a channel plan ensures no two adjacent access points are on the same channel?

To avoid co-channel interference.

What are the life cycle stages of a small-to-medium business (SMB)?

Establishment, Growth, Expansion, Maturity, Decline.

When diagnosing an Internet protocol television (IPTV) service problem in the customer premises, what can be concluded if the problem goes away when the streaming media player is connected to the local area network (LAN) with an Ethernet cable rather than Wi-Fi?

The problem is isolated to the Wi-Fi network.

Which layer of the OSI protocol stack handles frames?

Data link

What requirements were needed for PacketCable to deliver a quality and reliable telephone service over a Data Over Cable Service Interface Specification (DOCSIS) access network?

Quality of service (QoS) controls, enhanced security, and adaptive equalization in the upstream path.

An ohm meter should be connected?

So the difference in potential of the two connecting points will be indicated on the meter.

When routing and attaching interior unshielded twisted-pair (UTP) cable, what is the minimum separation distance you should maintain between any telecommunications or data cable and electrical power conductors?

2 in.

________ kilowatt-hours (kWh) would be supplied by a standby power supply that provides 60 volts and 10 amperes of current for a period of 3½ hours?

2.1.

Excessive current flow?

Is often the result of the failure of a small part within a larger circuit.

Which of the following digital TV (DTV) trouble calls could have been avoided with customer education about the product?

The digital set-top box (STB) overheats.

When were additional rules enacted by the Federal Communications Commission (FCC) that required closed captioning of much of the programming delivered via Internet Protocol (IP)?

2012.

_______ ohms of resistance is required for a circuit with an applied voltage of 30 volts and a circuit current of 1.3 amperes?

23.076.

What is the maximum tap value that can be installed when the tap is connected directly to a line extender amplifier output and: (1) the line extender output is 45 dBmV @ 745.25 MHz; (2) the longest amount of Series 6 coaxial cable from the tap to either of two TVs is 150 ft; (3) the Series 6 coaxial cable attenuation rate is 5.65 dB/100 feet @ 750 MHz; (4) the drop includes a splitter with a 4.0 dB loss; and (5) the system minimum signal level required at each TV set is 3.0 dBmV?

29 dB.

Which version of the Data Over Cable Service Interface Specification (DOCSIS) included the option to increase the top frequency speed of the upstream to 85 megahertz (MHz)?

DOCSIS 3.0.

What is the first step in prequalifying (i.e., inspecting and evaluating) a new customer's existing telephony service?

Locate all active telephones and jacks.

What is the most important factor that determines the resistance of a conductor?

The material itself (its atomic structure) is what determines the resistance of a conductor.

When using a digital signal analyzer to troubleshoot data throughput in the Data Over Cable Service Interface Specification (DOCSIS) network, what is the minimum modulation error ratio (MER) into the cable modem for a 256- quadrature amplitude modulation (QAM) carrier?

32 dB or greater.

How many hours will the embedded multimedia terminal adapter (EMTA) continue to run on battery power if there has been a power outage?

8 hours.

What is the design difference between a loop-through system and a home-run system?

A loop-through system has a splitter or directional coupler at each outlet that provides signal to those outlets and passes the remaining signal to the next outlet, while a home-run system has a dedicated cable run to each outlet from a common splitter.

Topology refers to the arrangement used in routing and connecting inside wiring to the network interface device (NID) or distribution device. How is the star topology arranged?

A separate twisted-pair cable is routed to each modular jack from the NID.

It is essential to pay attention to warning signs of stress overload. Poor attitude is one of the behaviors that may indicate that you are overstressed. What are the symptoms of poor attitude behavior?

A significant change in attitude with a noticeable movement toward negative, hostile, cynical, or paranoid thoughts.

If there are problems with a customer's telephone line, which equipment should be used to monitor a telephone line, check line polarity, place and receive calls, and troubleshoot various faults?

A telephone test set.

What is the difference between the FTTN and FTTC topologies?

An FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises.

What instructions might a cable modem termination system (CMTS) send in a ranging response (RNG-RSP) message to modify the cable modem's transmission parameters?

An adjustment to the modem's timing interval, transmit frequency, or power level.

What is the proper way to handle fiber once it is spliced?

At the heat-shrink protective sleeve that has a steel bar inside it.

If a High-Definition Multimedia Interface (HDMI) splitter is suspected as the cause of a problem, how can the splitter be tested?

Bypass the splitter by connecting only one device at a time using the same HDMI cable.

How do cable operators ensure that only paying customers are receiving digital television (DTV) service?

Cable operators prevent unauthorized reception of DTV services by scrambling or encrypting the services.

Identify a material that has a negative temperature coefficient and describe how temperature change will affect the material.

Carbon has a negative temperature coefficient. The resistance of carbon will increase with a temperature decrease and decrease with a temperature increase.

Using a digital signal analyzer, what measurements are typically taken to troubleshoot and diagnose a digital television (DTV) signal?

Carrier average power level, modulation error ratio (MER), and bit error ratio (BER).

Identify a material that has a positive temperature coefficient and describe how temperature change will affect the material.

Copper has a positive temperature coefficient. The resistance of copper will increase with a temperature increase and decrease with a temperature decrease.

Which Data Over Cable Service Interface Specification (DOCSIS) version was the first to provide an option for raising the top frequency of the upstream spectrum to 85 megahertz (MHz) in order to create enough bandwidth for upstream carriers from modems running on previous DOCSIS versions?

DOCSIS 3.0.

If the customer demonstrates that they are experienced with accessing the internet savvy, what should be the next step in the customer education portion of the high-speed data (HSD) service installation?

Direct the customer to the cable operator's webpage to show them what information is available and to help them set up their email account.

A fraction is converted to a percent by?

Dividing the numerator by the denominator and multiplying by 100.

Generating a dial tone in either a traditional telephone call or a PacketCable voice over Internet protocol (VoIP) call is similar, except?

Equipment in the central office (CO) for plain old telephone service (POTS) senses the change in voltage and generates a dial tone where the embedded multimedia terminal adapter (EMTA) senses the change and generates a dial tone in PacketCable.

Scenario: As you are connecting the office computers, you use one patch cord to connect each patch panel port to a hub port, and another patch cord to connect each work area port to a PC. You power up all the PCs and look at the hub port status indicators. All but one port shows green. What is the first troubleshooting step you should take?

Establish the symptoms.

In a home that has an addition, what type of wiring topology is it most likely going to require?

Hybrid topology.

The letter and symbol designation for current is ______ and _______, respectively.

I and A.

What consideration should be made when choosing the location to place or mount an embedded multimedia terminal adapter (EMTA)?

If it's near an unswitched electrical outlet to prevent inadvertent service interruptions.

What is the purpose of the MST?

It provides access to connect fiber-optic cable drops from the customer premises to the network.

What is the purpose of the network interface device (NID) that is installed by the telephone company?

It serves as the demarcation point between the telephone company's outside network and the customer premises' inside wiring.

Using a phrase such as "You didn't..." when speaking with a customer should be avoided because?

It sounds like you are making an accusation.

What is the usual size comparison of load resistance to circuit wire resistance in any specific circuit?

Load resistance in the circuit is usually much larger than the wire resistance in the circuit.

Which type of twisted-pair inside-wiring installation tool helps bend and wrap the tip and ring conductors of the twisted-pair, inside-telephone wiring around the tip and ring binding posts on a network interface device (NID)?

Long-nose pliers.

Which of the following protocols were developed to enhance voice over Internet protocol (VoIP) performance?

Multiprotocol label switching (MPLS), Real-Time Transport Protocol (RTTP), and quality of service (QoS).

Where should the customer be encouraged to go for information and questions before calling customer service?

Online to the cable operator's website under the support section. The information and answers provided consists of helpful support pages that can help troubleshoot services.

When troubleshooting a drop splitter with wrong cable connections, incorrectly connecting the input cable to a splitter's output port and the TV cable to the input port of the splitter will usually result in which of the following?

Only the TV set incorrectly connected to the splitter input port will have a good picture, while all the TV sets connected to the other output ports will have black pictures.

What telephone wiring condition is characterized by one or more telephones not working because one or both conductors have been cut?

Open condition.

Which of the following acronyms is defined as a forwarding behavior a node applies to a packet based on the packet's condition? The packet's Differentiated Services Code Points (DSCP) indicates the particular _____ a packet should receive as it passes from hop to hop.

PHB.

The customer accidentally nicked the cable while moving patio furniture. What trouble might this cause?

Packet loss.

Why is packet-switching technology considered to be more efficient than circuit switching technology?

Packet-switching operates over a shared network and occupies the network only for the duration of time it takes to transport the data packet.

Which of the following describes the process for troubleshooting signals?

Performing tests on QAM channels to measure bit-error rate (BER).

Which media distribution gateway is used where legacy analog TVs are in place for reliable programming without a set-top box (STB)?

Quadrature amplitude modulation (QAM) to analog (Q2A).

What requirements were needed for PacketCable to deliver a quality and reliable telephone service over a Data Over Cable Service Interface Specification (DOCSIS) access network?

Quality of service (QOS) controls, enhanced security, and adaptive equalization in the upstream path.

Across which resistor in a DC series circuit where R1 = 25 ohms, R2 = 50 ohms, R3 = 75 ohms, and R4 = 10 ohms is the greatest voltage drop?

R3.

What consideration could one make if a deployed network has good 2.4 GHz coverage with lackluster 5 GHz coverage?

Reduce transmit power in 2.4 GHz.

What coincided with the introduction of satellite program distribution, which enabled the delivery of cable specific networks and created demand for cable TV services in metropolitan areas?

Relaxation of tight regulations due to local broadcaster concern over competition from cable operators importing distant TV stations from other markets.

Prior to arriving at a customer site for a business class installation, who should you contact to get more information out about the customer?

Sales representative.

Which of the following statements about wires, cords, and modular connectors is correct?

Solid wire designed modular connectors are designed to accept either solid or stranded wire.

Which of the following characterizes the successful troubleshooter?

Someone with an inquisitive and relentless desire to solve and fix problems.

Describe where the source resistance would be electrically located in a circuit.

Source resistance would be the very small resistance between the positive and negative terminals inside the source.

Which of the following is defined as a set of device-to-device paths through the network such that there is one, and only one, path between any two devices?

Spanning Tree Protocol.

When locating a short circuit using a telephone test set, open one side of the telephone line at any location and place the telephone test set in the loop—one lead connected to each side of the opened line. A loud click can be heard on which side of a fault if the circuit is closed?

The battery side of a fault.

When light travels through a fiber-optic cable, the change in refractive index causes the light to refract off which of the following?

The boundary between the core and the cladding.

You have detected ingress at the customer premises. The ingress signal is at 20 dBmV at 31 MHz and the upstream frequency is 32 MHz. What is the likely result?

The cable modem or embedded multimedia terminal adapter (EMTA) may have trouble sending messages to the cable modem termination system (CMTS).

What happens if a DOCSIS modem is unable to acquire the current time and date from one or more time-of-day (ToD) servers during registration with the cable modem termination system (CMTS)?

The modem proceeds to an operational state and issues at least one ToD request per 5-minute period for each server specified until local time is established.

What is the first step a modem does when attempting to register with the cable modem termination system (CMTS)?

The modem sends a dynamic host configuration protocol (DHCP) request for an Internet protocol (IP) address to the CMTS, which forwards the request to the DHCP server.

What information does a DOCSIS 3.1 modem provide in its Bonded Initial Ranging Request (B-INIT-RNG-REQ) message to the cable termination system (CMTS)?

The modem's downstream service group (DS-SG), if determined.

What type of digital television (DTV) artifact describes moving lines and changing colors across patterns with repeated symmetrical detail?

The moiré effect

The major factor for determining whether a particular element is a conductor, a semiconductor, or an insulator is?

The number of electrons in the valence shell.

When porting telephone numbers, what information should you confirm with the customer?

The number of telephone lines being installed and their associated telephone numbers.

Two CPUs have the same size data bus. Which one will process data faster?

The one with a higher clock speed.

What was introduced in Data Over Cable Service Interface Specification (DOCSIS) 3.0 to allow enough bandwidth for upstream carriers from previous DOCSIS versions?

The option to increase the top frequency of the upstream to 85 MHz.

What is the difference between the wiring configurations for a residential, 8-position, 8-contact (8P8C) modular plug and jack in the Universal Service Order Codes (USOC) and ANSI/TIA/EIA 570-B?

The placement of pair numbers 3 and 4.

When analyzing loss of lip sync at the customer premises, what does seeing the same issue on multiple channels tell you?

The problem is coming from the set-top box (STB), TV, or other equipment in the customer premises.

What happens to the resistance of a conductor when its cross-sectional area is doubled?

The resistance of a conductor is cut in half when its cross-sectional area is doubled.

What is the theoretical output level and the actual output port insertion loss of a two-way splitter when: (1) the measured input level to the splitter is 9 dBmV @ 197 MHz; (2) the manufacturer-specified insertion loss is 3.5 dB @ 403 MHz; (3) the measured output port level is 4 dBmV @ 197 MHz?

The theoretical output level @ 197 MHz is 5.5 dBmV and the actual output port insertion loss is 5 dB.

What communications access technology does the first version of the Data Over Cable Service Interface Specification (DOCSIS 1.0) use to send data upstream over the network's radio frequencey (RF) return path?

Time Division Multiple Access (TDMA).

What communications access technology does the first version of the Data Over Cable Service Interface Specification (DOCSIS 1.0) use to send data upstream over the network's radio frequency (RF) return path?

Time division multiple access (TDMA).

The header of an Internet Control Message Protocol (ICMP) message includes a Type field. The number in this field represents a message type as well as the format of a packet. What does the type field "14" represent?

Timestamp Reply.

If a residence contains many modular jacks, a distribution device may be used in addition to the network interface device (NID). What components are contained in a distribution device?

Tip and ring screw or punch-down terminals, which are used to connect the inside wiring.

What can be done when APs share the same channel and are contending for airtime, thus slowing down the network?

Turn down transmit power.

Which two bands, in the 5GHz band, are home to the DFS channels?

UNII-2 and UNII-2e bands.

Magnetism?

Was discovered when the Greeks noticed that magnetite always aligned itself in a north and south direction.

Which of the following is a respectful way to treat a customer's property?

Wearing shoes with oil-resistant and non-marking soles.

Which characterizes a quadrature amplitude modulation (QAM) channel?

When of equal amplitude and bandwidth, the power level of a QAM channel is several decibel (dB) higher than an analog TV channel.

Which of the following is a Microsoft Windows utility that displays a computer's IP addressing and connectivity settings?

Ipconfig.

What should you do before you enter the customer premises?

Put on boot covers

In data networking, ________ describes the characteristics of a transmission link, such as throughput, setup time, or accuracy.

Quality of service (QoS).

Voltage is?

The measurement of the force or pressure that causes electrons to move.

Why would a cable operator consider activating device class identification (DCI) as part of a DOCSIS modem's initialization?

To enable the cable operator to define special modem classes or service levels that can be prioritized for ranging after a massive outage.

What is typically required when working on a voice installation with a private branch exchange (PBX) system?

A telephone technician or onsite support that is provided by the customer.

According to the National Electric Code (NEC) article 800-179, which type of cable marking shows that a cable is riser-rated?

CMR

In the forward direction, optical splitters are passive branching devices that?

Divide an optical signal across a number of output fibers.