NCTI - Installer Book

Which of the following is a correct step when lifting the ladder using the D-ring carry?

B) Turn the strand hooks so they face the strand.

What is the minimum safe length of a pole climbing gaff?

C) 1.25 inches measured on the flat underside next to the stirrup.

What test equipment is used to locate the source of signals egressing out of the feeder cable?

C) A signal leakage detector or meter.

What is the difference between the fiber-to-the-node (FTTN) and fiber-to-the-curb (FTTC) topologies?

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

Which testing tool plugs into a modular phone jack to give you access to the individual wires at the outlet?

C) Banjo modular test adapter.

What is one reason why broadband cable operators install fiber-optic cable in stages instead of changing the infrastructure all at once?

C) Changing the infrastructure all at once would cause too many service disruptions.

Which of the following is a proper step when removing the ladder from the strand?

C) Clear the hooks from the strand.

A cable gateway typically includes a cable modem, multiple quadrature amplitude modulation (QAM) tuners, a telephone interface, and a multiport and wireless router. What is the function of the multiple quadrature amplitude modulation (QAM) tuners?

C) Convert legacy DTV services being transported on QAM carriers to an IP format that can be received by IP devices.

A difference between installing in a single dwelling unit (SDU) and a multiple dwelling unit (MDU) is

C) The cable should be inaccessible to unauthorized individuals.

Which part of the F-connector slides over the dielectric and under the braid?

C) The internal post.

What does the appearance of the red ply on a safety strap indicate?

C) The strap needs to be replaced right away.

A metal underground water pipe can be used as a bonding point as long as it meets the requirements of the current National Electrical Code (NEC) rules. When is bonding to a metal underground water pipe acceptable?

C) When the bonding point can be made within five feet of the pipe entrance to the building.

Which of the following is a characteristic of high-definition television (HDTV)?

D) Audio surround sound using Dolby Digital technology.

Which of the following is one of the three correct ways of carrying a ladder?

D) D-ring carry.

Which of the following can cause interference with aircraft navigation and voice communications?

D) Egress.

Which of the following describes a fiber pigtail?

D) Fiber-optic cable with pre-connectorized ends.

Which of the following will effectively weatherproof the tap drop port connection?

D) Install a sealing sleeve.

Which of the following is true about minimum bending radius?

D) It is the tightest bend that can be safely applied to coaxial drop cable.

What is a function of a cable modem emulator?

) Test and quantify the drop's ability to provide high-speed data (HSD) or Internet protocol (IP) Voice service.

What percentage does a cables attenuation increase or decrease for every 10° change in temperature?

1%

At what modulation error ratio (MER) should a 256-quadrature amplitude modulation (QAM) signal operate?

32db or greater

Which of the following compression rates will enable six digital programs to be transmitted rather than one analog channel in a 6 MHz bandwidth?

6:1

Which of the following describes attenuation?

A reduction in signal strength through a cable system.

Which of the following best describes post bit-error-rate (BER)?

A) A measurement of all bit error after forward error correction has been applied.

Which of the following is a correct adjustment of pole climbers?

A) Adjust leg irons so that the top of the pole climber is one inch below the inner part of the knee joint.

Which of the following safety practices must be followed when working with fiber-optic cable?

A) Avoid looking directly into the end of a piece of fiber that may be connected to a light source.

Which of the following twisted-pair cable types is the only one that is approved by certifying bodies for data rates in excess of 10 Mbps?

A) CAT-5.

Which of the following is a step for safely removing the safety strap from the pole when preparing to descend a pole?

A) Grasp the pole with the left hand and slightly pull yourself toward the pole to take weight off of the strap.

Which of the following will prevent a device from communicating back to the headend, and should be removed on any cable leading to a two-way device?

A) High-pass filter.

How are optical splitters used in the forward path?

A) In the forward path, optical splitters are used as passive branching devices that divide an optical signal across multiple output fibers.

Which of the following is true about scoring the center conductor?

A) It breaks the connection for high frequency RF signals.

What is the function of the central processing unit (CPU) in a computer, laptop, or tablet?

A) It controls input, processing, storage, and output functions.

What is a function of a cable caddy?

A) It keeps the cable safe from kinking.

What is a function of the time domain reflectometer (TDR)?

A) Locate cable cuts, unknown splices, splitters, directional couplers, and cable impedance mismatches.

What is the purpose of a scratch awl?

A) Marking the location on wood or drywall for drilling holes and installing cover plate screws.

Which of the following is responsible for reducing crosstalk in twisted-pair cable?

A) Number of twists.

Which of the following will reduce signal strength on all the frequencies in the return path from the customer premises when attached at the tap?

A) Step attenuator.

Wireless networks use low-power RF signals; therefore, which of the following is true about signal strength?

A) The greater the distance between wireless devices, the lower the signal strength and data rate.

What is a function of a cable modem emulator?

A) Work with a transponder at the headend to conduct a return test.

Which of the following is the proper placement for an extension ladder?

B) 3 feet above roofline surface if moving from the ladder onto the roof.

Which of the following describes a carrier wave?

B) A wave with a much higher frequency than the input signal.

The cable modem termination system (CMTS) is one of the two main components of DOCSIS architecture. What is the other?

B) Cable modem.

What is a function of a digital multimeter (DMM)?

B) Check for hot chassis condition.

You are at the customer's premises and you are using a signal leakage detector to check for leaks. You are detecting multiple leaks in the system. What should you do to isolate the leaks?

B) Decrease the sensitivity on the signal level meter (SLM).

Which tool is used to check for a hot chassis condition?

B) Digital multimeter. DMM

Which device enables customers to schedule recordings of television programs?

B) Digital video recorder (DVR). dvr

Which of the following is true about the base 10 system?

B) Digits 0 through 9 are used.

Which of the following will strengthen signals as they move farther away from the headend through the trunk express system?

B) Distribution amplifiers.

Which of the following is the best drilling technique when routing cable through a brick wall?

B) Drill through the mortar in between or parallel with the brick.

Which of the following describes the structure of fiber-optic cable?

B) Drop fiber cables may use buffer tubes containing steel wire.

Ladders used in the cable industry are durable and do not conduct electricity through the length of the ladder. What are they made of?

B) Fiberglass with aluminum rungs.

Which tool is also called "fish sticks"?

B) Glow rod.

You are using a signal level meter (SLM) to troubleshoot a problem, and you begin by measuring the signal at the wall plate. What should you do next if the signal is normal?

B) Inspect and test each customer premises equipment (CPE) device, cables, and connectors.

Which of the following is a feature of multimode fiber?

B) It is easier to handle and terminate than single-mode fiber.

A center conductor that is too short may cause

B) Low frequency signals being affected more than high frequency signals.

Before drilling in the customer premises interior, what is one thing to keep in mind?

B) Make the interior cable routing as inconspicuous as possible.

When mounting a wall plate to a wall, position the wall plate against the wall over the entry hole, and align it with an adjacent electrical outlet. What is the next step when mounting a wall plate?

B) Mark anchor positions and make two anchor pilot holes with an awl.

Which of the following situations can cause a hot chassis condition?

B) Plugging an adapter incorrectly into a nonpolarized receptacle.

Which of the following is true when mounting splitters to an exterior wall?

B) Position and attach drop cables with a minimum five-inch diameter drip loop for each port.

Which of the following tools is used for twisted-pair work?

B) Punch-down tool.

Before digging in an underground installation, the utility lines will need to be located. Which of the following colors represents the electric line?

B) The red line.

Which of the following describes modulation?

B) The reshaping of a carrier wave to include information contained by an input signal.

On the return path, signals from many sources must be sent on the same cable. What is the name of the technique that allows the signals to be sent without losing data integrity?

B) Time division multiple access (TDMA).

Which TV digital format was originally designed for progressive scan DVDs?

EDTV

Which operating system is used exclusively on a Mac computer?

OS X

Which of the following is the symbol for power?

W = watts

When drilling an entry hole through an outside wall, drill from the outside to the inside in all materials, except

wood

Which of the following is true when ascending in a bucket truck?

C) Set the parking brake.

One of the first steps when you reach the site is to inspect the drop cable at the tap. Damaged cable can cause

C) Signal leakage.

Which of the following is true when using the six-step troubleshooting process?

C) Some steps may be performed simultaneously.

What is the purpose of side cut or diagonal pliers?

C) Cutting coaxial or other types of cable.

Which type of star topology used in a passive optical network (PON) places the PON splitters into fiber access terminal (FAT) located deep in the network and closer to the customer premises than the centralized split?

C) Distributed star.

As a general rule, when testing for stray voltage using a foreign voltage detector (FVD), which of the following is true?

C) Do not continue if an alarm sounds and more than 50 volts AC is indicated.

Which of the following is true about CAT-1 cabling?

C) It is typically used in voice applications.

Which of the following is true about extending the boom?

C) Lift and turn the boom as much as possible before extending it.

When an outside wall entry hole will not gain direct access to the back of the TV set, or when routing cable around the outside of the house is not practical, what is the next best option?

C) Locate the entry hole next to existing utility boxes and route the cable through a crawl space or basement.

Which of the following is one of the proper steps when descending the pole?

C) Lower the leg into position with body weight behind it.

Which element of a passive optical network (PON) uses patch panels?

C) Optical distribution network (ODN).

Which element of a passive optical network (PON) uses a Bragg grating filter?

C) Optical line terminal (OLT).

Which of the following is the CableLabs-led project built to define the architecture for the delivery of real-time Internet protocol (IP) applications?

C) PacketCable.

In a coaxial cable, what is the purpose of the shielding?

C) Prevents ingress and egress.

What should be done first when fishing a cable?

C) Push the fish tape to the desired location.

What is the best thing to do if you are wearing a hard hat in windy conditions?

C) Put the chin strap on.

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)?

C) RFoG can operate in parallel with GPON or EPON, which eliminates the need for any downtime during the transition.

Which of the following guidelines should be followed when attaching exterior drop cable to the premises?

C) Randomly vary the distance between the attachment points to eliminate the effects of harmonic reflections.

Which of these components is used in a passive optical network (PON)?

D) Optical splitters.

How often must a cable operator monitor for signal leakage according to the FCC?

D) Quarterly.

The Cumulative Leakage Index (CLI) report is a numerical representation for the total amount of signal leakage in a network. Each cable system must submit a CLI report to what organization?

D) The Federal Communications Commission (FCC).

Which of the following is true about Wi-Fi technology?

D) The connection between the router and modem is always wired.

Which of the following guidelines should be followed when attaching the lock box to the house?

D) The lock box should be located at least one foot from the utility meter and breaker box.

Which of the following is true when selecting the proper wire when bonding the drop?

D) The wire should be solid copper or other corrosive resistant material.

Before you start work after climbing an extension ladder, how should you check for electrical hazards?

D) Use a foreign voltage detector.

The following are five of the steps in the six-step troubleshooting process: 1) Identify the problem by gathering information; 2) Analyze the problem using logic and test equipment; 3) Isolate the problem area; 4) Diagnose the problem;.5) Resolve the problem. What else should you do during the troubleshooting process?

D) Verify that the problem was resolved.

A metal underground water pipe can be used as a bonding point as long as it meets the requirements of the current National Electrical Code (NEC) rules. When is bonding to a metal underground water pipe acceptable?

D) When the water pipe bonding connection is made anywhere other than within five feet of its entrance into the building.

When is the best time to wear rubber insulated safety gloves?

D) When there is a possibility of coming in contact with electrical voltages.

Which of the following describes the process of measuring an analog signal at a specific interval?

Sampling

Which SLM accessory should be changed out every few days?

coax jumper

Which tool should you have the air vents clear and always store in in a dry area?

drill

Which type of screen display has been known to use a great deal of energy, can have a short lifespan, but has high-contrast, vibrantly accurate color images?

plasma

Which type of television display has a deeper cabinet, which affects the size of the screen?

rear projector