3D152 Vol. 3

100 Questions | Attempts: 265
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  • 1/100 Questions

    The three cornerstones of voice network system security are availability,

    • Circumvention, and confidentiality
    • Circumvention, and disclosure
    • Confidentiality, and integrity
    • Disclosure, and integrity
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About This Quiz

All the UREs from CDC 3D152

3D152 Quizzes & Trivia

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  • 2. 

    What is the primary driving factor behind the invention of the telephone exchange?

    • Point-to-point telephone access caused cabling issues

    • The invention of the multi-line telephone

    • Military communication requirements

    • Radio communication requirements

    Correct Answer
    A. Point-to-point telephone access caused cabling issues
  • 3. 

    How is information recorded or stored on videotape?

    • Series of magnetic patterns

    • Series of edited electrical patterns

    • Transferred current indents

    • Transferred voltage indents

    Correct Answer
    A. Series of magnetic patterns
  • 4. 

    What function in a video tape recorder (VTR) is accomplished by transporting the videotape across the head gap at the same speed at which it was recorded?

    • Fast forward

    • Playback

    • Erasure

    • Rewind

    Correct Answer
    A. Playback
  • 5. 

    What is the beginning of a cable system called?

    • Head-end

    • Trunk line

    • Receiver

    • Decoder

    Correct Answer
    A. Head-end
  • 6. 

    What is the main purpose of a boundary fence?

    • Provides security forces (SF) personnel a safe place to work

    • Keep wildlife out of the perimeter detection zone

    • Facilitate the detection of intruders

    • To present a physical and psychological deterrent to unauthorized entry

    Correct Answer
    A. To present a physical and psychological deterrent to unauthorized entry
  • 7. 

    The next generation receive terminal (NGRT) accepts feeds from which two satellite bands?

    • Ku, Ka

    • C, X

    • Ku, X

    • Ka, C

    Correct Answer
    A. Ku, Ka
  • 8. 

    Base cables normally enter the central office (CO) facility through a

    • Cable manhole

    • Telecommunications cable closet

    • Building cable raceway

    • Cable vault

    Correct Answer
    A. Cable vault
  • 9. 

    You can compare a video taperecorder (VTR) head to a/an

    • Magnet

    • Conductor

    • Electromagnet

    • Charged capacitor

    Correct Answer
    A. Electromagnet
  • 10. 

    What must a line of detection detect?

    • Walking, running, rolling, crawling, or jumping through the line of detection

    • Wakling, runnig, rolling, crawling, or jumping outside the line of detection

    • Potential for intruder to bypass the system

    • Possibility of equipment failures

    Correct Answer
    A. Walking, running, rolling, crawling, or jumping through the line of detection
  • 11. 

    What role does the Private Branch Exchange (PBX) play in the telephony industry?

    • A medium scale switch that handles traffic for a small city

    • A very small scale switch that is also known as a key system

    • A large scale switch that handles the traffic for a metropolitan area

    • A small scale switch that handles internal calls for an organization

    Correct Answer
    A. A small scale switch that handles internal calls for an organization
  • 12. 

    The primary reason you should measure the voltage across terminal or distribution frame protectors before removing and replacing them is to

    • Verify the circuit is not in use

    • Prevent interruptions to critical circuits

    • Ensure dangerous voltages are not present on the line

    • Avoid activating alarm circuits

    Correct Answer
    A. Ensure dangerous voltages are not present on the line
  • 13. 

    The basic configuration if the entry control facility (ECF) includes a

    • Gatehouse, vehicle parking area, and personnel entry gate

    • Gatehouse, personnel entry gate, inspection equipment, and vehicle entrapment area

    • Personnel entry gate, inspection equipment, backup generator, and gatehouse

    • Location for security personnel to perform shift change and receive their weapon

    Correct Answer
    A. Gatehouse, personnel entry gate, inspection equipment, and vehicle entrapment area
  • 14. 

    Which sensor uses heat radiation to detect intruders?

    • Ultrasonic

    • Microwave

    • Passive infrared

    • Daul-phenomenology

    Correct Answer
    A. Passive infrared
  • 15. 

    What type alarm occurs when if the sensor post cover in vertical taut-wire sensor (VTWS) is removed?

    • None

    • Tamper

    • Intruder

    • Equipment fault

    Correct Answer
    A. Tamper
  • 16. 

    If all deployed and fixed locations use global positioning system (GPS) referenced clocks, we can eliminate crypto-sync loss due to

    • Synchronization

    • Buffer overflow

    • Timing slips

    • Data speeds

    Correct Answer
    A. Timing slips
  • 17. 

    Broadband technology uses all of these transmission mediums except?

    • Telephone lines

    • Television cable lines

    • Satellite systems

    • Laser light

    Correct Answer
    A. Laser light
  • 18. 

    Trend analysis is a program that trends all of these outage data except

    • Outage times

    • Reason for outage

    • Number of outages

    • Preempted outages

    Correct Answer
    A. Preempted outages
  • 19. 

    What is one path high frequency (HF) transmissions follow from the antenna to the distant end?

    • Lightwave

    • Microwave

    • Soundwave

    • Groundwave

    Correct Answer
    A. Groundwave
  • 20. 

    What is a major advantage of digital recording over analog recording?

    • Material can be edited generation after generation without noticeable degradation in quality

    • Material can be regenerated when the signal is converted to a different digital domain

    • The material recorded can be cloned with noticeable loss of quality

    • The recorded material can be converted to a different digital domain

    Correct Answer
    A. Material can be edited generation after generation without noticeable degradation in quality
  • 21. 

    What is the means of measuring the amount of time that has been played or recorded on a video tape recorder (VTR)?

    • Tape meter

    • Tracker

    • Counter

    • Display clock

    Correct Answer
    A. Counter
  • 22. 

    What is the primiary mode of detection for the microwave  fence sensor

    • Beam break

    • Signal fade margin

    • Multipath defelction

    • Dual-phenomena reflection

    Correct Answer
    A. Beam break
  • 23. 

    What is the most serious threat to voice network system integrity?

    • Subversion

    • Unauthorized monitoring

    • Inexperienced switch technicians

    • Inadequate maintenance practices

    Correct Answer
    A. Subversion
  • 24. 

    Which models of the digital multiplex system (DMS) family are commenly used at Air Force bases to provide base telephone services?

    • DMS-100 and Meridian System Logic (MSL)-100

    • DMS-100/200 and MSL-100

    • DMS-100/200 and DMS-200

    • DMS-200 and MSL-100

    Correct Answer
    A. DMS-100 and Meridian System Logic (MSL)-100
  • 25. 

    Which digital multiplex system (DMS)-100 database facility is responsible for creating and maintaing tables of data in a controlled manner?

    • Journal file

    • Table control

    • Dump/restore

    • Pending order file

    Correct Answer
    A. Table control
  • 26. 

    The red, green, and blue (RGB) outputs from the camera go to the

    • Encoder

    • Decoder

    • Multiplexer

    • Demultiplexer

    Correct Answer
    A. Encoder
  • 27. 

    What is not a factor in determining the refractive index of air?

    • Atmoshperic pressure

    • Propogation medium

    • Temperature

    • Moisture

    Correct Answer
    A. Propogation medium
  • 28. 

    Which is not a disadvantage of laser light transmission?

    • No need for careful alignment of transmitter and receiver

    • Cannot penetrate even very thin curtains of paper

    • Sensitive to atmospheric interference

    • Strictly line-of-sight (LOS) transmission

    Correct Answer
    A. No need for careful alignment of transmitter and receiver
  • 29. 

    How many B and D channels does the standard configuration in North American Integrated Services Digital Network (ISDN) primary rate interface (PRI) application use?

    • 2, 1

    • 30, 2

    • 1, 24

    • 23, 1

    Correct Answer
    A. 23, 1
  • 30. 

    How many lines of video are discarded in high-definition 1080 line video encoded with 1920x1088 pixel frames prior to display?

    • 2

    • 4

    • 6

    • 8

    Correct Answer
    A. 8
  • 31. 

    What part of the video switcher allows titles or other video scenes to be inserted into a full screen background?

    • Effects keyer

    • Effects preview multiplier

    • Effects program multiplier

    • Transition pattern generator

    Correct Answer
    A. Effects keyer
  • 32. 

    Within how many normal duty hours of completion action on the Telecommunications Service Order (TSO) must the circuit control office (CCO) submit an in-effect report

    • 72

    • 48

    • 24

    • 12

    Correct Answer
    A. 72
  • 33. 

    Trend analysis is a program that ensures circuits meet management thresholds (MT) on what basis?

    • Daily

    • Weekly

    • Monthly

    • Annual

    Correct Answer
    A. Monthly
  • 34. 

    How many miles above Earth are satellites placed into orbit?

    • 2,230

    • 2,320

    • 22,300

    • 23,200

    Correct Answer
    A. 22,300
  • 35. 

    The Integrated Services Digital Network (ISDN) configuration normally used to connect switches together is the

    • Basic rate interface

    • Primary rate interface

    • Trunk rate interface

    • Switch rate interface

    Correct Answer
    A. Primary rate interface
  • 36. 

    What is the means of measuring the amount of time that has been played or recorded on a video tape recorder (VTR)?

    • Tape meter

    • Tracker

    • Counter

    • Display clock

    Correct Answer
    A. Counter
  • 37. 

    Which piece of the recieve broadcast manager (RBM) functions as a common television set-top converter box?

    • Managed ethernet switch (MES)

    • Display and keyboard

    • Video converter

    • RBM server

    Correct Answer
    A. Video converter
  • 38. 

    Broadband refers to a technology that can transmit

    • A relatively wide range of frequencies

    • Only high frequency information

    • A relatively wide range of amplitudes

    • Only high amplitude information

    Correct Answer
    A. A relatively wide range of frequencies
  • 39. 

    What link is used to connect the digital multiplex system (DSM)-core to the DMS-bus?

    • DS-1

    • DS-30

    • DS-30A

    • DS-512

    Correct Answer
    A. DS-512
  • 40. 

    One disadvantage of microwave wavelengths is that the frequencies are susceptible to

    • Line noise

    • Weather effects

    • Frequency distortion

    • Electromagnetic interference

    Correct Answer
    A. Weather effects
  • 41. 

    What modulation technique is used by the Advanced Television Systems Committee (ATSC) system?

    • 4-quadraplex sideband (4-QSB)

    • 8-vestigal sideband (8-VSB)

    • 4-vestigal modulation (4-VM)

    • 8-quadrature modulation (8-QM)

    Correct Answer
    A. 8-vestigal sideband (8-VSB)
  • 42. 

    The security lighting inside the restricted area is used to

    • Provide the security forces personnel a safe working environment during night time errors

    • Identify wildlife inside the perimeter detection zone

    • Facilitate the detection and tracking of intruders

    • Present a means of deterring unauthorized entry

    Correct Answer
    A. Facilitate the detection and tracking of intruders
  • 43. 

    How many inches is the beam width at the widest portion of the infrared perimeter detection sensor?

    • 0.5

    • 1

    • 2

    • 4

    Correct Answer
    A. 2
  • 44. 

    What configuration does the Red Data Module normally operate in?

    • Stand alone

    • Client only

    • Gateway only

    • Gateway/client

    Correct Answer
    A. Gateway/client
  • 45. 

    The determining factor in calculating the correct size of a waveguide is

    • Frequency

    • Power output

    • Bandwidth of the transmission medium

    • Distance between equipment and transmitter

    Correct Answer
    A. Frequency
  • 46. 

    Which satellite communications system is used to transmit space operations?

    • Milstar Communication System

    • Defense Satellite Communications System (DSCS)

    • Air Force Satellite Communications (AFSATCOM)

    • Ground Mobile Forces Satellite Communications (GMFSC)

    Correct Answer
    A. Defense Satellite Communications System (DSCS)
  • 47. 

    To transmit an audio signal over radio frequency (RF), it first has to be

    • Phase shifted

    • Transmitted

    • Modulated

    • Encoded

    Correct Answer
    A. Modulated
  • 48. 

    What component carries the signal to individual subscribers?

    • Head-end

    • Trunk line

    • Receiver

    • Coax RJ-6

    Correct Answer
    A. Trunk line
  • 49. 

    What is the interior intrusion destection system (IIDS) is designed to detect intruders attempting to enter a shelter, storage igloo, or building?

    • AN/GSS-42

    • AN/GSS-41

    • AN/GSS-29

    • AN/GSS-39

    Correct Answer
    A. AN/GSS-39

Quiz Review Timeline (Updated): Nov 7, 2013 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Nov 07, 2013
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 17, 2013
    Quiz Created by
    Kadavenport22
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