3D151 Volume 2

100 Questions | Total Attempts: 106

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3D151 Quizzes & Trivia

Volume 2 3D151


Questions and Answers
  • 1. 
    The process of condensation occurs when air particles are
    • A. 

      Pressurized causing them to move closer together

    • B. 

      Heated rapidly causing them to spread farther apart

    • C. 

      Pressurized causing them to be released to the atmosphere

    • D. 

      Heated rapidly causing them to move closer together

  • 2. 
    In hertz (Hz), what range of sound can the human ear detect?
    • A. 

      200 to 3,000

    • B. 

      20 to 20,000

    • C. 

      20 to 200,000

    • D. 

      Up to 2,600

  • 3. 
    The loudness of a sound is closely related to what part of the sine wave?
    • A. 

      Amplitude

    • B. 

      Frequency

    • C. 

      Tone

    • D. 

      Pitch

  • 4. 
    Noise may be introduced into speech signals by thermal agitation and
    • A. 

      Power variations

    • B. 

      Black body radiation

    • C. 

      Molecular breakdown

    • D. 

      Amplitude variations

  • 5. 
    In hertz (Hz), what is the actual voice frequency band?
    • A. 

      300 to 1600

    • B. 

      300 to 3400

    • C. 

      300 to 3800

    • D. 

      300 to 2600

  • 6. 
    Which models of end offices in the Digital Multiplex System (DMS) family are commonly used at Air Force bases to provide base telephone services?
    • A. 

      DMS–100 and Meridian System Logic (MSL)–100.

    • B. 

      DMS–100/200 and MSL–100.

    • C. 

      DMS–100/200 and DMS–200.

    • D. 

      DMS–200 and MSL–100.

  • 7. 
    Which model of Digital Multiplex System (DMS)–100 family switches is installed in compact modular cabinets?
    • A. 

      Meridian System Logic (MSL)–100.

    • B. 

      DMS–200

    • C. 

      DMS–100

    • D. 

      System load (SL)–1.

  • 8. 
    What is the maximum number of ports that a Meridian System Logic (MSL)–100 will support?
    • A. 

      30,000

    • B. 

      300,000

    • C. 

      100,000

    • D. 

      10,000

  • 9. 
    Which type link is normally used to interconnect two peripheral modules (PM) in the Digital Multiplex System (DMS)?
    • A. 

      DS–30A

    • B. 

      Digital signal (DS)–1

    • C. 

      DS–32

    • D. 

      T1A

  • 10. 
    What major area is connected to the central side (C-side) of a network module (NM) in the Digital Multiplex System (DMS)?What major area is connected to the central side (C-side) of a network module (NM) in the Digital Multiplex System (DMS)?
    • A. 

      Peripheral module (PM)

    • B. 

      Control node (CN)

    • C. 

      Central control

    • D. 

      Message controller (MC)

  • 11. 
    What is the mounting bracket called on which transmission or switching equipment is mounted in a Digital Multiplex System (DMS)?
    • A. 

      Bay

    • B. 

      Card

    • C. 

      Frame

    • D. 

      Shelf

  • 12. 
    What contains bays of the same functional equipment?
    • A. 

      Shelf

    • B. 

      Card

    • C. 

      Bay

    • D. 

      Frame

  • 13. 
    Which Digital Multiplex System (DMS) component uses 16–bit Motorola 68000 or 8bit Intel microprocessors?
    • A. 

      A peripheral module’s (PM) peripheral processor (PP)

    • B. 

      The computing module’s (CM) central processing unit (CPU)

    • C. 

      A device controller

    • D. 

      The network message controller

  • 14. 
    How many channels of data does each digital signal (DS) 30 speech link carry?
    • A. 

      32

    • B. 

      30

    • C. 

      36

    • D. 

      34

  • 15. 
    Up to how many duplicated digital signals (DS)–30 links are used to connect a line group controller (LGC) to the network module (NM)?
    • A. 

      16

    • B. 

      8

    • C. 

      24

    • D. 

      6

  • 16. 
    What type of digital signal (DS) links are used to connect the Digital Multiplex System (DMS)-Core and the DMS-Bus?
    • A. 

      512

    • B. 

      30A

    • C. 

      1

    • D. 

      30

  • 17. 
    How many inter message switch links (IMSL) can be configured in a SuperNode?
    • A. 

      2

    • B. 

      16

    • C. 

      8

    • D. 

      4

  • 18. 
    Where are the system clocks located within the SuperNode?
    • A. 

      Network module (NM)

    • B. 

      Digital Multiplex System (DMS)-Bus

    • C. 

      Peripheral module (PM)

    • D. 

      DMS-Core

  • 19. 
    What type of digital signal (DS) protocol is used as a message carrier between the Digital Multiplex System (DMS)-Bus and the network modules (NM) and input/output controller (IOC)?
    • A. 

      1

    • B. 

      3

    • C. 

      512

    • D. 

      30

  • 20. 
    Where are the DMS-Core and DMS-Bus housed?
    • A. 

      Line trunk controller (LTC)

    • B. 

      Multipoint control unit (MCU)

    • C. 

      Multipoint controller (MC)

    • D. 

      Dual plane combined core (DPCC)

  • 21. 
    What is the first step in the pulse code modulation (PCM) process?
    • A. 

      The analog signal is band-limited

    • B. 

      The quantizer limits the amplitude of the pulses

    • C. 

      A binary code number is assigned to the sample

    • D. 

      Discrete amplitudes are assigned to the sampling pulses

  • 22. 
    In the pulse code modulation (PCM) process, changing the quantized samples into a binary word is called
    • A. 

      Band limiting

    • B. 

      Encoding

    • C. 

      Sampling

    • D. 

      Quantization

  • 23. 
    What is a method of putting many users on a single cable pair?
    • A. 

      Pulse code modulation

    • B. 

      Pulse amplitude modulation.

    • C. 

      Time code multiplexing

    • D. 

      Time division multiplexing

  • 24. 
    In the time division multiplexing (TDM) process, the rate of sampling must be equal to
    • A. 

      The lowest frequency sampled multiplied by the sampling rate per cycle

    • B. 

      Twice the lowest frequency sampled multiplied by the sampling rate per cycle

    • C. 

      The highest frequency sampled multiplied by the sampling rate per cycle

    • D. 

      Twice the highest frequency sampled multiplied by the sampling rate per cycle

  • 25. 
    Each 125μs time period in the digital signal (DS) 30 signaling format (used within the voice network system) is called a
    • A. 

      Snapshot

    • B. 

      Frame

    • C. 

      Channel

    • D. 

      Span