2A553B Vol. 3 Pretest

79 Questions | Total Attempts: 487

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CDC Quizzes & Trivia

Pretest for CDC 2A553B Upgrade.


Questions and Answers
  • 1. 
    (401) The maximum number of avionics units the Military Standard 1553B data bus is capable of transferring data between is...
    • A. 

      16.

    • B. 

      25.

    • C. 

      32.

    • D. 

      64.

  • 2. 
    (401) Which element of the Military Standard 1553B data bus gathers and formats information from aircraft sensors for transfer on the data bus?
    • A. 

      Monitor.

    • B. 

      Bus controller.

    • C. 

      Remote terminal.

    • D. 

      Backup controller.

  • 3. 
    (401) A backup bus controller on the Military Standard 1553B data bus is...
    • A. 

      Mandatory and must be active at the same time as the primary bus controller.

    • B. 

      Mandatory and must not be active at the same time as the primary controller.

    • C. 

      Optional and may be active at the same time as the primary bus controller.

    • D. 

      Not required for normal operation, but is required on modern data buses.

  • 4. 
    (402) What does an optical data bus use as the controlling protocol for high-speed message transfer?
    • A. 

      MIL-STD-3910B.

    • B. 

      MIL-STD-1553B.

    • C. 

      Optic transceiver.

    • D. 

      Star coupler.

  • 5. 
    (403) When the bus controller detects a transmission error while communicating with a RT on the Military Standard 1553B data bus, the bus controller...
    • A. 

      Retransmits the command several times, and then tries the backup data bus.

    • B. 

      Is disabled and the backup controller resumes transmission.

    • C. 

      Attempts to retransmit to the RT until contact is made.

    • D. 

      Establishes communications with a different RT.

  • 6. 
    (403) Which element of the Military Standard 1553B data bus is not usually used in avionics bus systems?
    • A. 

      Remote terminal.

    • B. 

      Bus controller.

    • C. 

      Stub coupler.

    • D. 

      Bus monitor.

  • 7. 
    (403) Which type of data bus stub is most suitable for stubs less than one foot in length on the Military Standard 1553B data bus?
    • A. 

      Transformer-coupled stub with external coupling network.

    • B. 

      Transformer-coupled stub with internal coupling network.

    • C. 

      Direct-coupled stub with external coupling network.

    • D. 

      Direct-coupled stub with internal coupling network.

  • 8. 
    (403) The superior type of data bus stub on a Military Standard 1553B data bus is the...
    • A. 

      Transformer-coupled stub with external coupling network.

    • B. 

      Transformer-coupled stub with internal coupling network.

    • C. 

      Direct-coupled stub with internal coupling network.

    • D. 

      Direct-coupled stub with external coupling network.

  • 9. 
    (404) Each type of word used on the Military Standard 1553B data bus is...
    • A. 

      20 bits long with a 3-bit sync character, 16 information bits, and one parity bit.

    • B. 

      16 bits long with a 3-bit sync character, 12 information bits, and one parity bit.

    • C. 

      10 bits long with a 2-bit sync character, seven information bits, and one parity bit.

    • D. 

      8 bits long with a 2-bit sync character, five information bits, and one parity bit.

  • 10. 
    (404) In a Military Standard 1553B data bus command word, the field that refers to a function or area within the remote terminal to which the command is being directed is the...
    • A. 

      Address field.

    • B. 

      Subaddress/mode field.

    • C. 

      Transmit/receive bit field.

    • D. 

      Word count/mode code field.

  • 11. 
    (404) Information describing the condition of a RT on a Military Standard 1553B data bus is transmitted as a...
    • A. 

      Command word in response to a command from the RT.

    • B. 

      Data word in response to a command from the bus controller.

    • C. 

      Status word in response to a command from the bus controller.

    • D. 

      Data word in response to a command from the backup controller.

  • 12. 
    (405) The word count field in a controller-to-RT transfer message on the Military Standard 1553B data bus must correspond to the number of...
    • A. 

      Status words the RT transmits to the bus controller.

    • B. 

      Data words the RT receives from the bus controller.

    • C. 

      Status words the RT receives from the bus controller.

    • D. 

      Command words the RT transmits to the bus controller.

  • 13. 
    (405) After the receiving RT on a Military Standard 1553B data bus has received and validated the data words from the transmitting RT during an RT-to-RT transfer, it...
    • A. 

      Transmits a command word to indicate receipt of the message.

    • B. 

      Responds with a status word indicating a successful transfer.

    • C. 

      Responds with a data word indicating a successful transfer.

    • D. 

      Transmits a data word to the transmitting RT.

  • 14. 
    (405) During mode command transfers on a Military Standard 1553B data bus, the word count/mode code field identifies the...
    • A. 

      Particular mode command being implemented by the RT.

    • B. 

      Particular mode command being implemented by the bus controller.

    • C. 

      Number of data words to be transferred by the bus controller.

    • D. 

      Number of data words to be received by the RT.

  • 15. 
    (406) Which LRU is the CITS data bus controller?
    • A. 

      CITS maintenance recorder.

    • B. 

      Data conversion unit.

    • C. 

      Data acquisition unit.

    • D. 

      Digital computer.

  • 16. 
    (406) Circuit parameter data from the communications and dependent position determining subsystems is received by the...
    • A. 

      CITS maintenance recorder.

    • B. 

      Data conversion unit.

    • C. 

      Data acquisition unit.

    • D. 

      Digital computer.

  • 17. 
    (406) The aircraft parameter data file is recorded by the...
    • A. 

      CITS maintenance recorder.

    • B. 

      Data conversion unit.

    • C. 

      Data acquisition unit.

    • D. 

      Digital computer.

  • 18. 
    (407) The system integration manual does not contain...
    • A. 

      A description of the CITS system.

    • B. 

      A description of aircraft power control management.

    • C. 

      Descriptions of aircraft software configuration.

    • D. 

      Descriptions of CITS system autoflow.

  • 19. 
    (407) To locate a CMC autoflow chart in the system integration manual, you use the...
    • A. 

      Table of contents.

    • B. 

      CMC integration list.

    • C. 

      CMC-to-Autoflow Cross-Reference List.

    • D. 

      CMC, PAGE, and ENTRY POINT index.

  • 20. 
    (408) When the DISPLAY switch on the CITS computer display panel is momentarily pressed to DIS RESET,...
    • A. 

      All of the alphanumeric display is cleared.

    • B. 

      All lighted matrix switches are turned off and reset.

    • C. 

      The current line on the alphanumeric display is cleared.

    • D. 

      All lighted matrix switches are turned on for three seconds, and then off.

  • 21. 
    (408) How many different test patterns are used when the CITS computer display panel's DIS TEST switch is used?
    • A. 

      1.

    • B. 

      2.

    • C. 

      3.

    • D. 

      4.

  • 22. 
    (408) To view data on the alphanumeric display of the CITS computer display panel, the DIS mode switch must be in what position?
    • A. 

      STIM.

    • B. 

      KYBD.

    • C. 

      START.

    • D. 

      CMPTR.

  • 23. 
    (408) In which mode is a CITS maintenance code displayed on the CITS computer display panel?
    • A. 

      ACFT.

    • B. 

      GND RDY.

    • C. 

      FLT FAULT ISLN.

    • D. 

      GND FAULT ISLN.

  • 24. 
    (409) The mission computer provides display mode commands, flight director commands, and...
    • A. 

      Radio altitude.

    • B. 

      Radar altitude.

    • C. 

      Ground faults.

    • D. 

      Flight failures.

  • 25. 
    (409) The HUDs are focused to infinity and permit a wide field of view of...
    • A. 

      25 degrees horizontal and 18 degrees vertical.

    • B. 

      25 degrees horizontal and 24 degrees vertical.

    • C. 

      30 degrees horizontal and 24 degrees vertical.

    • D. 

      30 degrees horizontal and 30 degrees vertical.

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