CDC Z3D152 VOLUME 1 (Continued)

1.

1 point

(032) What are the three sections of a fiber optic cable?

Core, cladding, and shield.

Core, conductor, and shield.

Core, cladding, and jacket.

Core, conductor, and jacket.

2.

1 point

(040) What active test is selected on a protocol analyzer to determine if a network node is connected or responding?

Route generator.

Packet internetwork groper (PING).

Traffic generator.

Trace route.

3.

1 point

(033) How long do most fiber-optic epoxies take to set?

30–40 minutes.

8–72 hours.

24–48 hours.

12–24 hours.

4.

1 point

(021) Which of these activities would generate the most electrostatic current?

Walking across carpet.

Working at a bench.

Picking up a common plastic bag.

Walking across a vinyl floor.

5.

1 point

(028) Which type of cable does not radiate energy and is not affected by nearby magnetic fields?

Unshielded.

Multipair.

Shielded.

Twisted pair.

6.

1 point

(035) The purpose of the miniature ON/OFF switches on a breakout box is to

allow the interruption of the individual interface conductors for isolated testing.

measure the individual interface signals.

change the voltage of individual interface signals.

allow the cross-patching of the individual interface conductors.

7.

1 point

(035) The purpose of a breakout box is to

measure electrical voltage, current, frequency, and resistance.

locate sheath faults, damaged conductors, splices, bridge taps, and split pairs.

provide wiring maps at both ends of the cable.

allow monitoring and access to multiple conductors.

8.

1 point

(032) Which type of cable is the easiest to splice?

Single mode fiber.

Coaxial cable.

Multimode graded-index fiber.

Multimode step index fiber.

9.

1 point

(030) What is the standard conductor used for data networking?

RJ–45.

RJ–15.

RJ–11.

RJ–49.

10.

1 point

(034) When using an ohmmeter to take a resistance reading, what preliminary precaution should you take?

Set the range for maximum reading.

Disconnect the power from the circuit being tested.

Properly seat the test lead into the current input terminal jack.

Place the meter in the frequency mode.

11.

1 point

(031) What has made very high data rate transmission possible on a fiber optics cable?

The low signal to noise ratio of the cable.

The use of light-emitting diodes.

The multiplexing technique used in fiber optics.

The broad bandwidth of the cable.

12.

1 point

(037) What type of sampling does a digital storage oscilloscope normally use on single-shot or seldom-occurring signals?

Repetitive.

Sequential.

Random.

Real-time.

13.

1 point

(027) Which section of a horizontal cable duct is used for signal and control cables?

Left.

Lower.

Right.

Upper.

14.

1 point

(040) Which component of a protocol analyzer discards frames based on its definition or activates a trigger based on the trigger definition?

Buffer.

Filter.

Counter.

Central processing unit.

15.

1 point

(023) How many phases of generator power are usually required for industrial and commercial applications?

Single.

Three.

Double.

Four.

16.

1 point

(029) What is used to identify the polarity of a wire pair in a cable?

Rate and Color.

Pair and Position.

Tip and Ring.

Tip and Color.

17.

1 point

(037) Sampled data points are stored in the memory of a digital storage oscilloscope as

waveform points.

record lengths.

record points.

sequential records.

18.

1 point

(022) Which type of uninterruptible power supply (UPS) is traditionally referred to as “offline”?

Double conversion.

Line interactive.

Ferro resonant standby.

Passive standby.

19.

1 point

(040) What protocol analyzer test window provides information concerning the network utilization and frame error that are related to a specific protocol?

Protocol statistics.

Media access control (MAC) node statistics.

Connection statistics.

Node discovery.

20.

1 point

(034) When a multimeter has three input terminal jacks, which jack is always used?

Common.

Voltage.

Amperage.

Frequency.

21.

1 point

(029) The thin plastic colored tape that spirals around a specific number of pairs that replicate in color is a

bundle.

marker.

casing.

binder.

22.

1 point

(037) Which digital storage oscilloscope button controls all waveforms displayed in the STORE mode?

SELECT C1/C2 switch.

CURSORS control.

SAVE/CONTINUE switch.

MEMORY control.

23.

1 point

(038) What type of error is the result of two successive logic one pulses of the same polarity that violates alternate mark inversion coding rules?

Bit slip.

Cyclic redundancy check.

Bipolar violation.

Frame.

24.

1 point

(038) What determines the size of a test pattern segment transmitted from a bit error rate test (BERT)?

The number of bits in the number of bytes that are equally divided into the test pattern.

The total amount of bandwidth in the test pattern.

The number of bits that can represent the total number of bits in the test pattern.

The total number of bytes that represent the bits test pattern.

25.

1 point

(022) Which power line fault category is symptomatic of an instantaneous or dramatic increase in voltage?

Spike.

Noise.

Sag.

Blackout.

26.

1 point

(024) Which is not a consideration for selecting facility batteries?

The facility power requirements.

The number of AC converters required for the facility.

The amount of current and future floor space available.

The facility power reserve times.

27.

1 point

(022) Which power line fault category is symptomatic of a total loss of utility power?

Sag.

Blackout.

Noise.

Spike.

28.

1 point

(040) What protocol analyzer test window reports errors that occur at the physical layer such as bad frame check sequence (FCS), short frames, and jabbers?

Media access control (MAC) node statistics.

Connection statistics.

Node discovery.

Protocol statistics.

29.

1 point

(030) What cable type connects devices that operate at similar layers of the open system interconnection (OSI) model?

Rollover.

Straight-through.

Coaxial.

Crossover.

30.

1 point

(024) What function do facility batteries provide during normal operating conditions (commercial alternate current [AC] power available)?

They generate direct current (DC) power and run the switch.

They serve no function unless commercial power is disconnected.

They rectify the commercial AC to DC and power the system.

They act as a DC filter for the commercial AC power.

31.

1 point

(028) The advantage of using coaxial cable over paired cable is that coaxial cable

is less expensive.

is easier to install.

has a low frequency range.

does not radiate energy.

32.

1 point

(038) Which section of a bit error rate test (BERT) set measures the received test pattern?

Emitter.

Transmitter.

Synchronizer.

Receiver.

33.

1 point

(031) What is the maximum operating temperature of fiber optic cable?

10,000°C.

5,000°C.

500°C.

1,000°C.

34.

1 point

(025) Which publication series covers standard Air Force installation practices?

TO 31–10 series.

TO 31–20 series.

TO 61–10 series.

TO 61–20 series.

35.

1 point

(037) What is the standard operating mode for the acquisition mode on a digital storage oscilloscope?

Sample mode.

Averaging mode.

Real-time mode.

Peak detect mode.

36.

1 point

(022) Which power line fault category is typically referred to as electro-magnetic interference and radio frequency interference?

Noise.

Spike.

Sag.

Blackout.

37.

1 point

(040) What active test on a protocol analyzer is selected to see the path that the packets are traveling and the time it takes the packets to compete the trip?

Trace route.

Traffic generator.

Route generator.

Packet internetwork groper (PING).

38.

1 point

(030) Pin 1 on a typical Electronics Industry Association/Telecommunications Industry Association (EIA/TIA) 568B connector is what color?

Blue.

White/blue.

White/orange.

Orange.

39.

1 point

(036) What happens to the observed signal if you advance the oscilloscope synchronizing control too far?

Overloading.

Masking.

Distortion.

Deflection.

40.

1 point

(035) What do the jumper cables and side switch pins on a breakout box allow?

Cross-patching of individual interface conductors.

Changing the voltage of individual interface signals.

Interruption of voltage/current to the interfaces.

Measurement of individual interface signals.

41.

1 point

(022) Which type of uninterruptible power supply (UPS) offers the highest level of protection?

Line interactive.

Double conversion.

Passive standby.

Ferro resonant standby.

42.

1 point

(040) What protocol analyzer test window automatically runs in the background when the protocol analyzer application is activated?

Media access control (MAC) node statistics.

Protocol statistics.

Node discovery.

Connection statistics.

43.

1 point

(033) What do you use to remove excess fiber after the connector has cooled and epoxy has dried on a fiber cable?

Strippers.

Polishing cloth.

Alco wipes.

Scribe.

44.

1 point

(020) What does an integral system of air terminals, roof conductors, and down conductors, securely interconnected to the shortest practicable path to earth provide for a facility?

Protection from noise.

Protection from blackouts.

Protection from lightning.

Protection from brownout

45.

1 point

(026) How are connectorized cables labeled?

The first label is placed within 6 inches of the connector and marked “TO”, and the second is placed within two (2) inches of the first label and marked “FROM”.

The first label is placed within 6 inches of the connector and marked “TO”, and the second is placed within one (1) inch of the first label and marked “FROM”.

The first label is placed within 12 inches of the connector and marked “TO”, and the second is placed within two (2) inches of the first label and marked “FROM”.

The first label is placed within 12 inches of the connector and marked “TO”, and the second is placed within one (1) inch of the first label and marked “FROM”.

46.

1 point

(037) What area of a digital storage oscilloscope takes digitized samples and performs numerous manipulations on the data including measuring rise and fall times, periods, time intervals, and math computations?

Input.

Memory.

Acquisition.

Microprocessor.

47.

1 point

(027) Support intervals for cables requiring surface installation will not exceed how many feet?

15.

10.

20.

5.

48.

1 point

(033) When using a polishing cloth, remove a little bit of the protruding fiber at a time, until the fiber is perfectly

elliptical.

flat and level.

round.

flat with a 45-degree angle.

49.

1 point

(021) Which electronic discharge sensitive (ESD) class has a sensitivity range from 0 – 999 volts?

Class IV.

Class III.

Class I.

Class II.

50.

1 point

(039) When using an optical time-domain reflectometer (OTDR), what action might a manufacturer require to prevent false readings?

Set the range for maximum reading.

Use the frequency mode.

Connect a launch cable between the test set and the cable being tested.

Connect an injector at the end of the cable being tested.