2a253 Volume 2 CDC

57 Questions | By TSgtThatGuy | Updated: Mar 18, 2022 | Attempts: 204

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This is a study guide to help airman study for there end of course test. Not filling out there bubble sheets. End of disclaimer enjoy your studying. CDC 2A253N SOF/PR Electronic Warfare Systems Journeyman Volume 2. Electronic Warfare Principles and Support Equipment 2A253N 03 1308, Edit Code 01 AFSC 2A253

Questions and Answers

1.

2. The serial transmission bit rate for the MIL-1553 data bus is
- A.
  
  A. 2 mega bits per second (Mbps)
- B.
  
  B. 16 Mbps
- C.
  
  C. 32 Mbps
- D.
  
  D. 64 Mbps
2.

3. A MIL-STD 1553 data bus message must contain at least one command word with a max of how many data words?
- A.
  
  A. 3
- B.
  
  B. 16
- C.
  
  C. 20
- D.
  
  D. 32
3.

6. The basic element in a computer microchip is?
- A.
  
  A. silver.
- B.
  
  B. silicon.
- C.
  
  C. copper.
- D.
  
  D. aluminum.
4.

7. (202) Chips with circuits that can do the work of all the different parts of a computer are called
- A.
  
  A. valves.
- B.
  
  B. microchips.
- C.
  
  C. circuit boards.
- D.
  
  D. microprocessors.
5.

8. (202) What controls the current passing through a computer circuit?
- A.
  
  A. Gates.
- B.
  
  B. Buffers.
- C.
  
  C. Transistors.
- D.
  
  D. Central processing unit.
6.

9. (202) The heart of the entire computer complex data processing system is the
- A.
  
  A. gate.
- B.
  
  B. terminal.
- C.
  
  C. transistor.
- D.
  
  D. central processing unit.
7.

10. (202) What controls the speed of a computer’s activities?
- A.
  
  A. Clock.
- B.
  
  B. Timer.
- C.
  
  C. Input equipment.
- D.
  
  D. Output equipment.
8.

11. (202) What part of a computer acts like a sophisticated switchboard operator?
- A.
  
  A. Memory.
- B.
  
  B. Logic unit.
- C.
  
  C. Control unit.
- D.
  
  D. Arithmetic unit.
9.

12. (202) Where does the arithmetic/logic unit of a computer store the intermediate results of arithmetic operations?
- A.
  
  A. Buffers.
- B.
  
  B. Circuits.
- C.
  
  C. Memory.
- D.
  
  D. Registers.
10.

13. (203) The primary computer memory that usually cannot be erased is called
- A.
  
  A. random-access memory (RAM).
- B.
  
  b. read-only memory (ROM).
- C.
  
  C. secondary.
- D.
  
  D. auxiliary.
11.

14. (203) Random-access memory is used to
- A.
  
  A. provide secondary memory access.
- B.
  
  B. provide auxiliary storage capabilities.
- C.
  
  C. store computer operating information.
- D.
  
  D. store information being calculated by the computer.
12.

15. (203) In a computer the term auxiliary storage refers to
- A.
  
  A. specific storage locations.
- B.
  
  B. the size and capacity of storage area.
- C.
  
  C. memory stored outside the computer.
- D.
  
  D. data processed through the main storage area.
13.

1. (201) Which was not a MIL-STD 1553 bus standard requirement?
- A.
  
  A. Information was to have a very low level of data transfer determinism.
- B.
  
  B. Information was to be transferred in a reliable, deterministic, command/response fashion.
- C.
  
  C. Information was to be transferred between bus terminals via a digital serial communications c. Information was to be transferred between bus terminals via a digital serial communications channel.
- D.
  
  D. Electrical interface requirements were to be defined by the standard for all bus terminals and bus terminal connections.
14.

4. The MIL-STD 1553 data bus system command that provides a mechanism for a bus terminal (RT) to send data to another RT when the bus controller (BC) does not require the data is called?
- A.
  
  A. BC to RT.
- B.
  
  B. RT to BC.
- C.
  
  C. RT to RT.
- D.
  
  D. BC to BC.
15.

5. Which is no a function of the MIL-STD 1553 data bus mode codes?
- A.
  
  A. Resetting terminals.
- B.
  
  B. Synchronizing the subsystem time.
- C.
  
  C. Executing a bus controller (BC) broadcast command.
- D.
  
  D. Commanding at bus terminal (RT) to initiate a system self-test.
16.

16. (204) Using a text-based method to display characters and objects on a computer display refers to
- A.
  
  A. using Windows-based programs.
- B.
  
  B. displaying information in the form of individual dots.
- C.
  
  C. displaying information in the form of printed characters.
- D.
  
  D. communicating information from the central processing unit to the screen.
17.

17. (205) Internet protocols can best be described as a
- A.
  
  A. way to communicate across interconnected networks.
- B.
  
  B. way to print documents from any work station.
- C.
  
  C. signal that produces radio frequencies.
- D.
  
  D. relay between work stations.
18.

18. (205) The switches within a network main function is to
- A.
  
  A. build protocols to send across the network.
- B.
  
  B. forward frames of information over a network.
- C.
  
  c. generates a radio signal to extend range of a network.
- D.
  
  D. enable several users to send information over a network.
19.

19. (206) What is the technique where blocks of data can be segmented into numerous blocks so can be written called?
- A.
  
  A. Data striping.
- B.
  
  B. Mirroring.
- C.
  
  C. Bridging.
- D.
  
  D. Parity.
20.

20. (206) What redundant array of independent disks (RAID) level has no redundancy of data?
- A.
  
  A. RAID–0.
- B.
  
  B. RAID–1.
- C.
  
  C. RAID–2.
- D.
  
  D. RAID–3.
21.

21. (206) Which redundant array of independent disks (RAID) parity is distributed across all drives and eliminates a bottleneck?
- A.
  
  A. RAID–2.
- B.
  
  B. RAID–3.
- C.
  
  C. RAID–4.
- D.
  
  D. RAID–5.
22.

22. (207) Shielded cable consists of a.
- A.
  
  A. metallic braid over the insulation.
- B.
  
  B. a metal conductor covered with a dielectric.
- C.
  
  C. an inner conductor separated by an insulation dielectric.
- D.
  
  D. a compact wire bundle with self-contained wire assemblies.
23.

23. (208) Which is not a connector coupling type?
- A.
  
  A. Friction.
- B.
  
  B. Bayonet.
- C.
  
  C. Insertion.
- D.
  
  D. Threaded.
24.

24. (208) Which is not a radio frequency (RF) connector precaution?
- A.
  
  A. Never step on the cable.
- B.
  
  B. Ensure a good grip when using pliers.
- C.
  
  C. Ensure you solder double shielded cables together.
- D.
  
  D. Ensure you do not exceed the bend radius of the cable.
25.

25. (209) Twisting an optic fiber during installation or maintenance results in
- A.
  
  A. disturbances in lay uniformity
- B.
  
  B. greater elasticity of the glass fibers.
- C.
  
  C. reduced optical power transmission.
- D.
  
  D. good tension control preventing loose or uneven standing.