3D156 CDC Vol. 3

85 Questions | Total Attempts: 57

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3D156 CDC Vol. 3

Questions and Answers
  • 1. 
    (401) What facility ground subsystem uses surge arrestors?
    • A. 

      The earth electrode subsystem.

    • B. 

      The fault protection subsystem.

    • C. 

      The signal reference subsystem.

    • D. 

      The lightning protection subsystem.

  • 2. 
    (401) What facility ground subsystem is also called the safety ground?
    • A. 

      The earth electrode subsystem.

    • B. 

      The fault protection subsystem.

    • C. 

      The signal reference subsystem.

    • D. 

      The lightning protection subsystem.

  • 3. 
    (402) What term is used for the establishment of a low-impedance path between two metal surfaces?
    • A. 

      Bonding.

    • B. 

      Shielding.

    • C. 

      Annealing.

    • D. 

      Grounding.

  • 4. 
    (402) Bonds in the earth electrode subsystem normally are direct permanent bonds and do not exceed a resistance of
    • A. 

      1 milliohm.

    • B. 

      2 milliohms.

    • C. 

      5 milliohms.

    • D. 

      10 milliohms.

  • 5. 
    (402) What bonds are normally applied to signal reference bonds?
    • A. 

      None.

    • B. 

      Brazing.

    • C. 

      Welding.

    • D. 

      Mechanical.

  • 6. 
    (403) What are two basic functions of shielding?
    • A. 

      Prevent interference between multiple emanating systems and minimize compromising emanations.

    • B. 

      Prevent interference between multiple emanating systems and block all emanations from exiting a secure facility.

    • C. 

      To equalize all electronic systems to the same potential and minimize compromising emanations.

    • D. 

      To equalize all electronic systems to the same potential and block all emanations from exiting a secure facility.

  • 7. 
    (404) The thin plastic colored tape spirals around a specific number of pairs that replicate in a cable is a
    • A. 

      Marker.

    • B. 

      Bundle.

    • C. 

      Casing.

    • D. 

      Binder.

  • 8. 
    (404) In telecommunications cable, the "tip" or "primary" color group order is
    • A. 

      Blue, orange, green, brown, and slate.

    • B. 

      Blue, green, yellow, red, and orange.

    • C. 

      White, red, black, yellow, and violet.

    • D. 

      White, blue, green, yellow, and violet.

  • 9. 
    (404) What is the "ring" or "secondary" color code for telecommunications cable?
    • A. 

      Blue, orange, green, brown, and slate.

    • B. 

      Blue, green, yellow, red, and orange.

    • C. 

      White, red, black, yellow, and violet.

    • D. 

      White, blue, green, yellow, and violet.

  • 10. 
    (404) In telecommunications cable, the binder color for pair count 26-50 is
    • A. 

      Yellow-orange.

    • B. 

      Violet-orange.

    • C. 

      White-orange.

    • D. 

      White-slate.

  • 11. 
    (404) Most newly installed network cables follow what standard?
    • A. 

      N586B.

    • B. 

      N568C.

    • C. 

      T586C.

    • D. 

      T568B.

  • 12. 
    (404) Two types of network cables are
    • A. 

      Straight through and crossover.

    • B. 

      Straight through and flip/flop.

    • C. 

      High and low baud.

    • D. 

      "n" and "g".

  • 13. 
    (405) How are Air Force communications quality control checksheet (AFCQCC) organized?
    • A. 

      Alphabetically.

    • B. 

      By unit type code.

    • C. 

      By numbered and titled series designator groups.

    • D. 

      By equipment short title and national stock class.

  • 14. 
    (405) Which is a function of Air Force Communications Special Instructions?
    • A. 

      Permanently change technical order procedures.

    • B. 

      Means to issue optional equipment modifications.

    • C. 

      Provide significant system repair history for equipment transfers.

    • D. 

      Paraphrases technical order procedures via quick reference index cards.

  • 15. 
    (406) How many parameters are associated with temperature/dewpoint measurement?
    • A. 

      2.

    • B. 

      3.

    • C. 

      4.

    • D. 

      5.

  • 16. 
    (406) What is the degree of accuracy and scale used to measure temperature/dewpoint readings?
    • A. 

      Tenth, Celsius.

    • B. 

      Tenth, Fahrenheit.

    • C. 

      Hundredth, Celsius.

    • D. 

      Hundredth, Fahrenheit.

  • 17. 
    (406) For stations utilizing Coordinated Universal Time, what are the standard time designations for observing maximum and minimum temperatures?
    • A. 

      0000 and 1200.

    • B. 

      0000, 0800, and 1600.

    • C. 

      0000, 0600, 1200, and 1800.

    • D. 

      0000, 0400, 0800, 1200, 1600, and 2000.

  • 18. 
    (407) Wind direction is determined by averaging the direction over how many minutes?
    • A. 

      1.

    • B. 

      2.

    • C. 

      5.

    • D. 

      10.

  • 19. 
    (407) How many degrees of direction change must occur to be classified as a wind shift?
    • A. 

      10.

    • B. 

      45.

    • C. 

      90.

    • D. 

      180.

  • 20. 
    (408) The four visibility parameters are
    • A. 

      Prevailing, sector, surface, and tower.

    • B. 

      Approach, clearance, surface, and tower.

    • C. 

      Approach, prevailing, surface, and tower.

    • D. 

      Approach, clearance, prevailing, and surface.

  • 21. 
    (408) What standard must automated visibility sensor use?
    • A. 

      International Standard Algorithms for Automated Weather Observing Systems Used for Aviation Purposes.

    • B. 

      Federal Standard Algorithms for Automated Weather Observing Systems Used for Aviation Purposes.

    • C. 

      Federal Aviation Administration (FAA) Standard Weather Algorithms.

    • D. 

      FAA Algorithms for Aviation Weather Observations.

  • 22. 
    (409) Altimeter setting refers to the altitude above mean sea level of an aircraft located where?
    • A. 

      500' above the weather station.

    • B. 

      1000' above the weather station.

    • C. 

      Anywhere in the local flight pattern.

    • D. 

      On the ground at the measurement location.

  • 23. 
    (410) Cloud height is one part of a more complex forecasting fundamental called
    • A. 

      Sky condition.

    • B. 

      Visibility.

    • C. 

      Structure.

    • D. 

      Horizon.

  • 24. 
    (410) What piece of meteorological equipment is used to measure cloud height?
    • A. 

      Barometer.

    • B. 

      Ceilometer.

    • C. 

      Cloudometer.

    • D. 

      Laser measure.

  • 25. 
    (411) What four major subassemblies make up the automated meteorological station, AN/FMQ-19?
    • A. 

      Sensors, field data collection unit (FDCU), terminal data acquisition unit (TDAU), and data multiplexer.

    • B. 

      FDCU, remote control display unit (RC/DU), TDAU, and data multiplexer.

    • C. 

      Sensors, FDCU, TDAU, and operator interface display (OID).

    • D. 

      FDCU, data multiplexer, TDAU, and OIDs.

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