NCTI Field Tech 2 to 3
Which of the voltage standing wave ratios (VSWR) shown below is best for transferring radio frequency (RF) energy between connections?
1.2:1
What is the maximum range of Class 2, 2.5 mW Bluetooth devices
10 meters or 33 Feet
How wide is each of the three WLAN UNII bands
100 MHz
How many channels are available with IEEE 802.11g
11
The Federal Communications Commission (FCC) rules regarding power output for frequency-hopping spread spectrum (FHSS) state that a maximum output to the intentional radiator (IR) with 5 MHz of carrier frequency bandwidth must be which one of the following
125 mW
Which is the largest IEEE 802.11 data frame that can traverse a wireless local area network (WLAN) without fragmentation
2,346 Bytes
All 802.11 standards use one of two frequency bands. What are these frequency bands
2.4 GHz and 5 GHz bands
What is the width of Direct Sequence Spread Spectrum (DSSS) channels and how far apart are their center frequencies spaced
22 MHz and 5 MHz
What test should you perform during the site survey to enable the design engineer to understand and control what the user's experience will be on the WLAN
A data throughput test
What is the typical coverage pattern of a semidirectional antenna
A hemispherical or cylindrical pattern
What type of wireless local area network (WLAN) attack could cost an employee their job because network usage logs point directly to the employee whenever a hacker gains access to the employee's domain login information and causes havoc on the network?
A passive attack
What antenna type is ideal for making a point-to-point (P2P) network connection between two office buildings that are across the street from one another
A semidirectional antenna
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
What is a main-in-the-middle attack on a WLAN
A situation in which a hacker uses an AP to effectively hijack mobile nodes(clients) by sending a stronger signal than the legitimate AP is sending
What test instrument is used to locate and measure interfering narrowband radio frequency (RF) signals in an IEEE 802.11 wireless local area network (WLAN) among other things
A spectrum analyzer
What is a slot time in an IEEE 802.11 wireless local area network (WLAN)
A standard period of time on a WLAN that each station multiplies by a random number to determine the length of time to wait before performing a clear channel assessment (CCA)
What is a half-duplex device that is only capable of (OSI) reference model Layer 2 connectivity
A wireless bridge
What is the standard encryption method used with WPA2
AES
An Independent Basic Service Set (IBSS) is also commonly referred to as which of the following
Ad Hoc Network
What causes co-channel interference in a wireless local area network (WLAN)
An overlap in the signal ranges of access points (AP) or different WLANS operating on the same channels
Why would a wireless local area network (WLAN) administrator rarely see the "authenticated" step on the access point (AP)
Because clients pass the authentication stage and immediately proceed into the association stage
How would you use a laptop, tablet, or cell phones when performing a site survey for a WLAN
By checking for signal strength and coverage areas while roaming around the facility
How can filtering augment some of the security limitations of (WEP) in a (WLAN)
By defining parameters to which client stations must adhere in order to gain access to the network
What is one reason why broadband cable operators install fiber optic cables in stages instead of changing the infrastructure all at once
Changing the infrastructure all at once would cause too many service disruptions
Which term describes a wireless system in which the (AP) removes the (WLAN) (SSID) from the beacon frames
Closed System
What unit of measurement is used to express the gain of an antenna
Decibels over, or under 1 milliwatt (mW)
What kind of reasoning is described as applying a general statement that you know to be true to a new situation
Deductive
Although there are many different implementations of spread spectrum tech, what are the only types specified by the FCC in the Codes of Federal Regulation (CFR), volume 47, part 15
Direct Sequencing Spread Spectrum (DSSS) and Frequency Hopping Spread Spectrum (FHSS)
What specific problem does a wireless local area network (WLAN) resolve for corporations and home users
Excessive data cabling
Bluetooth uses which spread spectrum tech
Frequency Hopping Spread Spectrum (FHSS)
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
What info should you gather during the (WLAN) Site survey in a convention center for an up and coming trade show
ID who will be installing APA in ceiling that could be 40 ft high
Which version of the IEEE 802.11 wireless local area network (WLAN) standard was the first to use orthogonal frequency division multiplexing (OFDM)?
IEEE 802.11a
Operation as an IEEE 802.11ac device occurs only in the 5 GHz Unlicensed National Information Infrastructure (U-NII) radio band, so how are 802.11ac devices able to maintain compatibility with earlier standards that operate in the 2.4 GHz Industrial, Scientific, and Medical (ISM) radio bands
IEEE 802.11ac devices also operates in the 2.4 GHz ISM range
Bluetooth is a short range wireless personal area network (WPAN) tech that is covered under which Institute of Electrical and Electronics Engineers (IEEE) standard
IEEE 802.15
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
You are at a customer's house 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 is a consideration when mounting a high-gain omnidirectional antenna indoors on the ceiling
If the ceiling is too high, the coverage area might not reach the floor where the users are located
What can be done to increase the coverage area of a wireless local area network (WLAN)
Increase the transmission power, replace the omnidirectional antenna with a parabolic antenna, and use the 2.4 GHz radio band instead of the 5 GHz radio band
Which term describes the operation mode of a basic service set (BSS)
Infrastructure Mode
What is the purpose of the distributed coordination function (DCF) in an IEEE 802.11 wireless local area network (WLAN)
It allows for clients on a WLAN to contend for access on the shared radio frequency (RF) transmission medium using the carrier sense multiple access with collision avoidance (CSMA/CA) protocol
What is a wireless local area network (WLAN) service set
It describes the basic components of a fully operational WLAN
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 statement describes a passive injector
It places direct current (DC) voltage onto a CAT-5e cable
What happens when an active Ethernet switch fails to sense a power over Ethernet (PoE) device on a port
It switches off the DC voltage on that port
Why is Direct Sequencing Spread Spectrum (DSSS) the most widely known and the most used of the spread spectrum types
Its ease of implementation and high data rates
How does radio frequency line-of-sight (RF LOS) differ from visual LOS
LOS is accompanied by a Fresnel Zone, a series of concentric ellipsoid-shaped areas around the visual LOS path
What tech does the IEEE 802.11n wireless standard use to achieve data rates as high as 600 Mbps
Multiple input, multiple output (MIMO) tech and spatial multiplexing
Which one of the following conditions occurs when an access point (AP) receives a distant client's signal at a lower power level than that of a nearer client
Near/ Far
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
Which element of a PON(Passive Optical Network) uses Patch Panels
ODN(Optical Distribution Network)
Which element of a PON(Passive Optical Network) uses a Bragg grating filter
OLT(Optical Line Terminal)
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
Which of these components is used in a PON(Passive Optical Network)
Optical Splitters
Polarization is defined as which one of the following
Orientation of a electromagnetic wave's electric field in relationship to the Earth's surface or plane
(WLAN) that use an IEEE 802.1x protocol control network access on what basis
Port Based
Which one of the following power management modes populates a traffic indication map (TIM) in a basic service set (BSS) or extended service set (ESS)
Power Save Polling (PSP) mode
Which one of the following tasks is the best choice for troubleshooting the near/ far problem
Review the location of the stations(clients) on the network
What are some requirements of a WLAN in a hospital that make it an effective training ground for individuals who want to immerse themselves in WLAN technologies
Roaming across large distances, a limited number of users on an AP due to mandated security, and medical apps that are often connections-oriented between the client and the server
You are designing a wireless network to which several functional workgroups are connected. You want to configure your enterprise wireless gateway to allow you to quickly assign identical network access rights to persons within the same workgroup. Which enterprise wireless gateway feature provides this capability
Role-Based Access Control
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 Interframe space provides the highest level of priority network function control over the medium for a short time period
Short Interframe Space (SIFS)
What is the tradeoff between the fragmenting of packets into shorter fragments versus keeping longer packet fragments
Shorter packet fragments have lower probability of errors from interference than longer packet fragments, but shorter packet fragments require error correction
What are some common methods used to configure and manage access points (AP)
Telnet/ssh (Secure Shell), USB, and a built in web server for browser access
How do you troubleshooting a hidden node
Test for degraded data throughput at all client locations
When connecting to a wireless local area network (WLAN) what is the most important point about the Service Set Identifier (SSID)
That the clients and all access points (AP) must be configured with matching SSIDs
Why is shared key authentication considered a security risk in a wireless local area network (WLAN)?
The AP transmits the challenge text in the clear and receives the same challenge text encrypted with the WEP key
As a subscriber enters a hotspot area, which signals their mobile wireless device of an available Wi-Fi network
The Access Point (AP) queries all wifeless devices that come within range of their availability for connection
In which Open Systems Interconnection (OSI) reference model layer do wireless local area networks (LAN) operate
The Data Link Layer
Which organization regulates the use of wireless local area network (WLAN) devices in the United States
The Federal Communications Commision (FCC)
Why is the Fresnel Zone important to the integrity of the RF link or path
The Fresnel Zone defines an area around the RF line-of-sight (RF LOS) that can introduce RF signal interference if blocked
What should you note in the WLAN site survey if a semi directional antenna is required for adequate coverage
The antenna orientation along with the antenna's side and back lobes for coverage and security reasons
What are some basic questions you should ask a customer before visiting the customer's facility to perform a site survey
The anticipated number of users, security required, data throughput required, and budget
How does a client locate a wireless local area network (WLAN) when performing passive scanning
The client listens for beacons until it hears a beacon listing the service set identifier (SSID) of the network it expects to join
In a frequency-hopping spread spectrum (FHSS) system that uses 10 frequencies across a 12 MHz frequency band, what happens if narrowband interference occurs at only one of the 10 frequencies
The spread spectrum signal remains intact. Instead of being lost, the data on the interfered frequency is retransmitted on one of the other nine frequencies
How are interframe spaces used in an IEEE 802.11 wireless local area network (WLAN)
They are used to defer a station's access to the medium and provide various levels of priority
Which of the following statements is true concerning Bluetooth tech
To IEEE 802.11 networks operating in the 2.4 Industrial, Scientific, and Medical (ISM) radio bands, Bluetooth transmissions appear as all-band noise
What is the purpose of the IEEE 802.11 wireless local area network (WLAN) superframe
To allow fair coexistence between point coordination function (PCF)-mode and distributed coordination function (DCF)-mode clients on the network
What does the "on with threshold" setting of the Request to Send/Clear to Send (RTS/CTS) protocol allow the wireless local area network (WLAN) administrator to control?
To control which frames over a certain size are announced and cleared to send by the stations
How might you confirm the presence of a hidden node on the network
Turn on the request to send/clear to send (RTS/CTS) protocol and watch for increased network data throughput
You wish to build a wireless network that provides significantly better throughput than a single IEEE 802.11b access point (AP) Which of the following is an acceptable solution
Use IEEE 802.11 compliant equipment operating in the 5 GHz U-NII bands, allowing for more non-overlapping channels
What are some desired features of an AP used to perform WLAN site survey
Variable output power and external antenna connectors
After resolving the problem with the premises wiring issue, which of the following is the next step in the six-step process that the tech should take
Verify that the problem has been resolved and that phone service is running perfectly on all phones
What causes the hidden node problem in a wireless local area network (WLAN)
When a client ( or node) can receive signals from an access point (AP), but an obstacle prevents the client from receiving signals from the other clients that are connected to the network
When should you consider enabling Request to Send/ Clear to Send (RTS/CTS) protocol on a wireless local area network (WLAN)
When large frames experience high collision rates
Which statement best describes a network application for which a wireless workgroup bridge is the best suited
When remote buildings house small groups of wired clients needing wireless access to the main network
In which of the following applications might a wireless local area network (WLAN) be deployed in a distribution layer role
When the network requires speed, flexibility, and reliability
Residential Gateways have been around for quite some time, but what capability was added to connect to Institute of Electrical and Electronics Engineers (IEEE) 802.11b, 802.11g, 802.11n, and 802.11ac compliant devices
Wireless capability
Which wireless client devices require drivers to be installed on the client node
Wireless client devices on printed circuit (PC) cards that are to be installed in peripheral component interconnect (PCI) or Industry Standard Architecture (ISA) adaptors
Which of the following networks or products use spread spectrum tech
Wireless local area networks, Bluetooth, and global positioning systems
Why have 900 MHz Industrial, Scientific, and Medical (ISM) band wireless local area networks (WLAN) lost favor in comparison to 2.4 GHz and 5 GHz frequency systems
900 MHz devices are more expensive and provide slower data throughput
Ideally, what should your next step be after you complete the wireless local area network (WLAN) site survey and provide the survey results in a report to the customer?
A wireless consulting firm should be given the site survey so that they will then be able to provide effective info on equipment purchasing and security solutions
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 tech's confidence that the problem will be resolved by replacing the splitter
For maximum security, you should base your wireless local area network (WLAN) user authentication on which one of the following?
Device-independent schemes, such as user names and passwords
How might a wireless local area network (LAN) administrator ensure compliance with security audits?
Document audit procedures in the security policy
In what direction does an omnidirectional antenna radiate radio frequency (RF) energy
Equally in all directions around its axis
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 are some of the AP facts that should be detailed in a WLAN site survey
Location within facility, antenna type to be used, power output settings, how power will be provided to unit, and the expected data throughput per unit
Which one of the following radio frequency (RF) behaviors is defined as "the bending of a wave as it passes through a medium of different density"
Refraction
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
What are the three main conditions that influence the range of a wireless local area network (WLAN)
Transmission power, antenna type and location, and environment
What does the Institute of Electrical and Electronics Engineers (IEEE) specify as the maximum allowable power output into the intentional radiator for IEEE 802.11a, 802.11n, and 802.11ac compliant devices operating on the lower Unlicensed National Information infrastructure UNII radio band
40 mW
As a general rule, how does an increase in effective isotropic radiated power (EIRP) relate to the link budget range
Each 6 dB increase in EIRP equates to a doubling of range
In a segmented wireless local area network (WLAN) that has a different Internet Protocol (IP) address for each segment, which solution allows mobile clients to maintain their connectivity when roaming into different segments
To deploy all access points (AP) on a single virtual local area network (VLAN) using a flat IP subnet for all APs so that no change of IP address for roaming clients occurs and all traffic goes through a central controller
During which step of the six-step troubleshooting process for a digital TV(DTV) service problem are QAM(Quadrature amplitude modulation) channel measurements typically taken
Diagnosing symptoms
What challenges do Wireless Internet Service Providers (WISP) have to overcome in order to provide "last mile data delivery" to customers
Distance to access points (AP), rooftop access, lightning, trees, mountains, tower access, and other physical obstacles to connectivity
Which type of Star topology used in a PON(Passive Optical Network) places the PON splitters into FATS(Fiber Access Terminals) located deep in the network and closer to the customer premises than the centralized split
Distributed Star
What is it about Radio Frequency over Glass(RFoG) that made broadband cable operators envision using it to make a seamless transition from the legacy hybrid/fiber coax(HFC) architecture over to a gigabit-capable passive optical network (GPON) or Ethernet passive optical network (EPON)
RFoG can operate in parallel with GPON or EPON, which eliminates the need for any downtime during the transition
Why is it suggested that all data collected as part of a site survey for a wireless local area network (WLAN) be included in the survey report as an attachment, appendix, or separate set of documentation?
The data could be needed in the future
Why should a wireless network administrator consider installing an enterprise wireless gateway in their network
The enterprise wireless gateway enables the wireless network administrator to manage a large wireless network using only a few central device instead of a very large number of access ports
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 85MHz
Which of the following is a method for controlling expectations
focus on the bigger picture rather than smaller tasks
By taking control of the expectations you have you are
more likely to improve your motivation and be a better problem solver
Which Data Over Cable Service Interface Specification (DOCSIS) layer is used by cable modem termination system (CMTS) to differentiate between cable modems
the DOCSIS Media Access Control (MAC) Layer
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
Which of the following DTV(digital TV) trouble calls could have been avoided with customer education about the product
the digital set-top box(STB) overheats
What Wireless Local Area Network (WLAN) device can be described as a half-duplex device with intelligence equivalent to that of a sophisticated Ethernet switch
an Access Point (AP)
What initialization vector (IV) do most weak implementations of the Wireless Equivalency Protocol (WEP) use?
24 Bit
What would be the downstream throughput if two quadrature amplitude modulation (QAM) channels with a throughput of 38 Mbps were bonded
76 Mbps
What power over Ethernet (PoE) device picks off the direct current (DC) voltage that has been injected into the CAT-5e cable by the injector and makes it available to the equipment through the regular DC power jack
A DC picker or tap
What is the Federal Communications Commission (FCC) regulation for the maximum EIRP from a point to multipoint (P22P) wireless local area network (WLAN) antenna
4 Watts
An antenna cable connects the transmitter to an amplifier, and the power into the amplifier's input measures 50 mW. The amplifier increases the signal to the original transmitter's power level and sends the signal to the antenna. The antenna recieves the signal from the amplifer at 75 mW, and then transmits at 150 mW. What is the intentional IR power level in this radio frequency (RF) circuit
75 mWWhen
What device would a wireless local area network (WLAN) administrator install between the access point (AP) or bridge and the network to give indoor local area network (LAN) users as much bandwidth as possible
A bandwidth control unit (BCU)
A customer reports a problem of no dial tone(NDT) Upon Inspection, the tech notices that new carpenting has been installed. What should the tech 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
To prevent hacker access to passwords and Internet protocol (IP) addresses, why would you want to place wireless access points (AP) on switches instead of hubs?
Switches prevent the broadcast of packets to all network segments
Ap must support what encryption techniques in order to comply with IEEE 802.11i security standards
TKIP, AES, and AES-CCMP(Counter-Mode/CBC-MAC Protocol)
Which component of frequency hopping spread spectrum (FHSS) system creates more overhead than any similiar component in a direct sequence spread spectrum (DSSS) system
the interframe spacing
Heat Shrink tubing is installed over the fusion-splice to strengthen and protect it. When should the heat shrink be installed on the fiber
Before stripping the plastic coating from the fiber
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
How does spread spectrum tech reduce the probability of signal jamming
By transmitting over a wide frequency spectrum
What security service in an enterprise wireless gateway enables the wireless network administrator to assign levels of service to a particular user
Class of Service (CoS)
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
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
Given an access point (AP) with 100 milliwatts (mW) of output power connected through a cable with 3 dB of loss to the antenna with a 10 decibels isotropic dBi gain, what is the approximate Equivalent Isotropically Radiated Power (EIRP) level from the antenna in Milliwatts
500 mW
Which of the following IEEE 802.11 wireless local area network (WLAN) standards specifies both spread spectrum RF and Infrared (IR) transmission tech
802.11
What uses the 2.4 GHz band and runs at 54 Mbps
802.11g
Which one of the following wireless standards utilizes the 5 GHz frequency band for its signal transmissions
802.11n
What is it called when several computers are sharing files without a WAP
Ad-Hoc Mode
Which statement best describes protocol filtering that has been implemented in a wireless bridge
Allowing or denying wireless traffic using Open Systems Interconnection (OSI) reference model Layer 4 ports to filter Layer 7 applications
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 is the last step of the basic wireless access point (WAP) setup
Apply Security
What is the difference between FTTN and FTTC
FTTC is allowed a smaller number of RF amplifiers between the optical fiber and the customer premises
Which of the following describes a fiber pigtail
Fiber-optic cable with pre-connectorized ends
In what manner do radio waves propagate (move) away from the source (antenna)
In a straight line in all directions at once
How are optical splitters used in the forward path
In the forward path, optical splitters are used as passive branching devices that divide an optical signal across multiple output fibers
Which mode uses a wireless access point (WAP) connected to a wired network
Infrastructure
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
Which of the following characterizes the successful troubleshooter
Someone with an inquisitive and relentless desire to solve and fix problems
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) network into the next decade
Orthogonal frequency division multiplexing(OFDM) and low-density parity-check (LDPC)
What type of connectivity is needed to connect networks between two buildings located across the street from each other
Point-to-point (P2P)
Which of the following best describes stereotyped thinking
Presuming that all members of a group have certain characteristics
The ratio of the chipping code to data bits for a direct sequence spread spectrum (DSSS) signal is called which of the following
Processing Gain
Why is spread spectrum tech used in applications such as Bluetooth wireless personal area networks (WPAN)
Spread Spectrum tech allows wireless networking to create a short range, personal communications network
Which step in the troubleshooting process requires a discussion with the customer to gather more detail about the problem
Step 1: Identify the Problem
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 is Equivalent Isotopically Radiated Power (EIRP)
The power actually radiated by the antenna element
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
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
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
What are some measures that can be taken to prevent high voltage standing wave ratios (VSWR) in transmitters and receivers
Tighten connections between cables and connectors and use impedance-matched hardware throughput
When configuring a wireless router, why is changing the service set identifier (SSID) from the device default recommended
To avoid telling hackers exactly what the device is
In regard to Wi-Fi networks, what is WPS used for
To enable connection to a Wi-Fi network without a Windows interface
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
You are at a customer's home and you believe you have solved the problem. When you check to be sure there are no new problems, which step are you using
Verifying the Solution
Why are wireless local area networks (WLAN) usually deployed in an access capacity instead of as the network's core layer
WLANS are generally incapable of meeting the requirements of the network core layer, which needs to be very fast and stable, able to handle a tremendous amount of traffic with little difficulty and must experience no down time
Which encryption method is the most secure for a wireless network
WPA2
The attribute of being "active" as a critical thinker means
You observe and take notes relevant to the issue
How is silver satin cable used to connect telephone equipment to wall outlets typically pinned
Reversed at opposite ends, or cross-pinned
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
Why has it become cost-effective for enterprise companies to integrate wireless local area network (WLAN) segments into their networks
The cost of wireless tech has decreased and the quality has increased
