Communications - Electronics Journeyman CDC 2EX5X

100 Questions | Total Attempts: 319

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CDC Quizzes & Trivia

Multiple Choice on Volumes 1-3 of Career Development Course 2EX5X


Questions and Answers
  • 1. 
    What is the minimum amount of months required for 5-level upgrade for trainees who are now in retraining status?
    • A. 

      6 months

    • B. 

      9 months

    • C. 

      12 months

    • D. 

      15 months

  • 2. 
    What purpose of modulation prevents interference when sharing the same communication path?
    • A. 

      Spectrum conservation

    • B. 

      Channel allocation

    • C. 

      Ease of radiation

    • D. 

      Companding

  • 3. 
    What color is used to mark sewer and drain lines?
    • A. 

      Blue

    • B. 

      White

    • C. 

      Green

    • D. 

      Purple

  • 4. 
    What type of Air Force Specialty Code is for use by the Air Force Personnel Center for assignment and training purposes?
    • A. 

      Duty

    • B. 

      Control

    • C. 

      Primary

    • D. 

      Ten

  • 5. 
    The output of the oscillator in an FM modulator increases in frequency with each
    • A. 

      Positive half cycle of the carrier

    • B. 

      Negative half cycle of the carrier

    • C. 

      Positive half cycle of the modulating signal

    • D. 

      Negative half cycle of the modulating signal

  • 6. 
    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 lightening protection subsystem

  • 7. 
    What Air Force Specialty Code performs maintenance on fixed and mobile meteorological and navigational aids systems, ground to air transmitters, receivers and transceivers?
    • A. 

      2E0X1 Ground Radar Systems

    • B. 

      2E1X1 Satellite, Wideband and Telemetry Systems

    • C. 

      2E1X2 Airfield Systems

    • D. 

      2E1X3 Ground Radio Communications

  • 8. 
    What is the formula to find the modulating index?
    • A. 

      Deviation / Frequency

    • B. 

      Deviation x Frequency

    • C. 

      Sideband / Modulating Frequency

    • D. 

      Sideband x Modulating Frequency

  • 9. 
    At what distance should the rods be spaced in a multi-rod grounding configuration?
    • A. 

      0.5 to 2 times the length of the longest rod in the subsystem

    • B. 

      1.5 to 3 times the length of the longest rod in the subsystem

    • C. 

      2.5 to 4 times the length of the longest rod in the subsystem

    • D. 

      3.5 to 5 times the length of the longest rod in the subsystem

  • 10. 
    When are Senior Noncommissioned Officers required to have on-the-job training records?
    • A. 

      When assigned to new duty station

    • B. 

      When the commander deems necessary

    • C. 

      When assigned to a commander's staff position

    • D. 

      When their skill level is not commensurate with their grade

  • 11. 
    By using 16-PSK, how many bit combinations are allowed to be used?
    • A. 

      2

    • B. 

      3

    • C. 

      4

    • D. 

      5

  • 12. 
    What is the establishment of a low-impedance path between two metal surfaces?
    • A. 

      Bonding

    • B. 

      Shielding

    • C. 

      Annealing

    • D. 

      Grounding

  • 13. 
    How many hours of rest must a supervisor give personnel who remain overnight at a remote duty location?
    • A. 

      A minimum of 6 hours

    • B. 

      A maximum of 6 hours

    • C. 

      A minimum of 8 hours

    • D. 

      A maximum of 8 hours

  • 14. 
    Non-uniform quantizing and companding decreases the length of the code word from
    • A. 

      11 to 7 bits

    • B. 

      11 to 8 bits

    • C. 

      16 to 7 bits

    • D. 

      16 to 8 bits

  • 15. 
    What is known as a set of standards for limiting electric or electromagnetic radiation?
    • A. 

      COMPUSEC

    • B. 

      TEMPEST

    • C. 

      COMSEC

    • D. 

      EMSEC

  • 16. 
    Which tool is provided to the commander on a quarterly basis to review and evaluate maintenance and training effectiveness?
    • A. 

      Unit Training Report from logistics module

    • B. 

      Cross reference data from federal logistics information system

    • C. 

      Air tasking order from theater battle manage core system

    • D. 

      Training visibility ledger from integrated maintenance data systems

  • 17. 
    Using the longitudinal redundancy check method of error correction, what does the receiver compare with the transmitter to ensure an accurate transmission of data?
    • A. 

      The checksum

    • B. 

      Block check character

    • C. 

      The ASCII character set

    • D. 

      The sum of the transmitted bits

  • 18. 
    What form is frequently used to initiate the need for a new communications service?
    • A. 

      AF IMT 9, Request for Purchase

    • B. 

      AF IMT 2005, Issue/Turn-In Request

    • C. 

      AF IMT 3064, Contract Progress Schedule

    • D. 

      AF IMT 3215, IT/NSS Requirements Document

  • 19. 
    What status is the same as estimated time in commission?
    • A. 

      Estimated time of repair

    • B. 

      Estimated time of arrival

    • C. 

      Estimated time of return to operation

    • D. 

      Estimated time of expected maintenance

  • 20. 
    When using forward error control as a method of error correction, where does error correction take place?
    • A. 

      Receiving end

    • B. 

      In the oscillator

    • C. 

      Transmitting end

    • D. 

      In the primary buffers

  • 21. 
    What is the threshold dollar value of equipment that is placed on CA/CRL?
    • A. 

      Over $1,000

    • B. 

      Over $1,500

    • C. 

      Over $2,000

    • D. 

      Over $2,500

  • 22. 
    What designates equipment as reportable?
    • A. 

      When it is mission capable

    • B. 

      When it is mission essential

    • C. 

      When it is full mission capable

    • D. 

      When it is partial mission capable

  • 23. 
    What component of a fiber optic cable provides the reflective surface that allows light to propagate?
    • A. 

      Core

    • B. 

      Buffer

    • C. 

      Jacket

    • D. 

      Cladding

  • 24. 
    Who maintains a central repository of CSIR information for the Air Force?
    • A. 

      Air Force Communications Agency

    • B. 

      Air Force Institute of Technology

    • C. 

      Engineering Data Service Center

    • D. 

      Technology Repair Center

  • 25. 
    What maintenance staff function coordinates with support agencies and assists maintenance personnel be expediting all supply transactions?
    • A. 

      Material control

    • B. 

      Quality assurance

    • C. 

      Maintenance operations center

    • D. 

      Maintenance production work center

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