CDC 3D152 Ure Volume 3

100 Questions | Total Attempts: 44

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3D152 Quizzes & Trivia

Systems and procedures.


Questions and Answers
  • 1. 
    One disadvantage of microwave wavelengths is that the frequencies are susceptible to 
    • A. 

      A. line noise.

    • B. 

      B. weather effects.

    • C. 

      C. frequency distortion.

    • D. 

      D. electromagnetic interference.

  • 2. 
    What is not a factor in determining the refractive index of air?
    • A. 

      A. Atmospheric pressure.

    • B. 

      B. Propagation medium.

    • C. 

      C. Temperature.

    • D. 

      D. Moisture.

  • 3. 
    The determining factor in calculating the correct size of a waveguide is 
    • A. 

      A. frequency.

    • B. 

      B. power output.

    • C. 

      C. bandwidth of the transmission medium.

    • D. 

      D. distance between equipment and transmitter.

  • 4. 
    How many miles above the earth are satellites placed in orbit?
    • A. 

      A. 2,230.

    • B. 

      B. 2,320.

    • C. 

      C. 22,300.

    • D. 

      D. 23,200.

  • 5. 
    Which satellite communications system is used to transmit space operations?
    • A. 

      A. Milstar Communication System.

    • B. 

      B. Defense Satellite Communications System (DSCS).

    • C. 

      C. Air Force Satellite Communications (AFSATCOM).

    • D. 

      D. Ground Mobile Forces Satellite Communications (GMFSC).

  • 6. 
    To transmit an audio signal over radio frequency (RF), it first has to be
    • A. 

      A. phase shifted.

    • B. 

      B. transmitted.

    • C. 

      C. modulated.

    • D. 

      D. encoded.

  • 7. 
    What is one path high frequency (HF) transmissions follow from the antenna to the distant end?
    • A. 

      A. Lightwave.

    • B. 

      B. Microwave.

    • C. 

      C. Soundwave.

    • D. 

      D. Groundwave.

  • 8. 
    Which is notdisadvantage of laser light transmission?
    • A. 

      A. No need for careful alignment of transmitter and receiver.

    • B. 

      B. Cannot penetrate even very thin curtains or paper.

    • C. 

      C. Sensitive to atmospheric interference.

    • D. 

      D. Strictly line-of-sight (LOS) transmission.

  • 9. 
    Broadband refers to a technology that can transmit
    • A. 

      A. a relatively wide range of frequencies.

    • B. 

      B. only high frequency information.

    • C. 

      C. a relatively wide range of amplitudes.

    • D. 

      D. only high amplitude information.

  • 10. 
    Broadband technology uses all of these transmission mediums except?
    • A. 

      A. Telephone lines.

    • B. 

      B. Television cable lines.

    • C. 

      C. Satellite systems.

    • D. 

      D. laser light.

  • 11. 
    The Integrated Services Digital Network (ISDN) configuration normally used to connect switches together is the
    • A. 

      A. basic rate interface (BRI).

    • B. 

      B. primary rate interface (PRI).

    • C. 

      C. trunk rate interface (TRI).

    • D. 

      D. switch rate interface (SRI).

  • 12. 
    How many B and D channels does the standard configuration in North American Integrated Service Digital Network (ISDN) primary rate interface (PRI) application use?
    • A. 

      A. 2, 1.

    • B. 

      B. 30, 2.

    • C. 

      C. 1, 24.

    • D. 

      D. 23, 1.

  • 13. 
    What was the primary driving factor behind the invention of the telephone exchange system?
    • A. 

      A. Point-to-point telephone access caused cabling issues.

    • B. 

      B. The invention of the multi-line telephone.

    • C. 

      C. Military communication requirements.

    • D. 

      D. Radio communication requirements.

  • 14. 
    When a telephone network is circuit switched, each call
    • A. 

      A. is broadcast over multiple paths between switches.

    • B. 

      B. is packetized and transmitted in circuitous bursts.

    • C. 

      C. has a dedicated circuit created by the switch.

    • D. 

      D. requires a dedicated switch to make the connection.

  • 15. 
    The three cornerstones of voice network system security are availability,
    • A. 

      A. circumvention, and confidentiality.

    • B. 

      B. circumvention, and disclosure.

    • C. 

      C. confidentiality, and integrity.

    • D. 

      D. disclosure, and integrity.

  • 16. 
    What is the most serious threat to voice network system integrity?
    • A. 

      A. Subversion.

    • B. 

      B. Unauthorized monitoring.

    • C. 

      C. Inexperienced switch technicians.

    • D. 

      D. Inadequate maintenance practices.

  • 17. 
    What role does the Private Branch Exchange (PBX) play in the telephony industry?
    • A. 

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

    • B. 

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

    • C. 

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

    • D. 

      D. A small scale switch that handles internal calls for an organization.

  • 18. 
    How many serial data interface ports does the Meridian Option 11C Small System Controller have?
    • A. 

      A. 32.

    • B. 

      B. 12.

    • C. 

      C. 3.

    • D. 

      D. 1.

  • 19. 
    Which models of the digital multiplex system (DMS) family are commonly used at Air Force bases to provide base telephone services?
    • A. 

      A. DMS-100 and Meridian System Logic (MSL)-100.

    • B. 

      B. DMS-100/200 and MSL-100.

    • C. 

      C. DMS-100/200 and DMS-200.

    • D. 

      D. DMS-200 and MSL-100.

  • 20. 
    What is the maximum number of ports that a digital multiplex system-100 (DMS-100) supports?
    • A. 

      A. 10,000.

    • B. 

      B. 30,000.

    • C. 

      C. 100,000.

    • D. 

      D. 300,000.

  • 21. 
    Which elements make up the control component of the SuperNode central control?
    • A. 

      A. Computing mode (CM) and message switches (MS).

    • B. 

      B. CM and system load module (SLM).

    • C. 

      C. Central processing unit (CPU) and control monitor unit (CMU).

    • D. 

      D. CPU, digital signal (DS), and peripheral module (PM).

  • 22. 
    What link is used to connect the digital mulitplex system (DMS)-cor to the DMS-bus?
    • A. 

      A. DS-1.

    • B. 

      B. DS-30.

    • C. 

      C. DS-30A.

    • D. 

      D. DS-512.

  • 23. 
    Which major component of the NorTel digital switching system (DSS) interfaces line and trunk subscribers?
    • A. 

      A. Central control.

    • B. 

      B. input/output (I/O).

    • C. 

      C. peripheral module (PM).

    • D. 

      D. peripheral subsystem (PS).

  • 24. 
    What components are directly connected to the input/output controller (IOC)?
    • A. 

      A. Printer, visual display unit (VDU), and tape drives.

    • B. 

      B. A pair of SuperNode message controllers and the device controllers.

    • C. 

      C. A maintenance and administration position (MAP).

    • D. 

      D. The central processing unit (CPU) and keyboard.

  • 25. 
    Base cables normally enter the central office (CO) facility through a 
    • A. 

      A. cable manhole.

    • B. 

      B. telecommunications cable closet.

    • C. 

      C. building cable raceway.

    • D. 

      D. cable vault.