IT Officer Study Material 2014

1. The most widely used coding scheme is------------
 ASCII
 Unicode
 EBCDIC
 Hexadecimal

Ans : ASCII

2. A microprocessor is a:

 Central processing unit on a chip
 Motherboard
 Memory module
 Transistor

Ans : Central processing unit on a chip

3. A system bus:
 runs at 100 MHz
 Transports data between the CPU and memory.
 Uses a set of serial electrical paths.
 Is always the same size.

Ans : Transports data between the CPU and memory.

4. Expansion boards are also called:
 Adapter cards.
 Serial ports.
 USB ports.
 Parallel ports.

Ans :  Adapter cards.

5. The IEEE 1394 bus is a(n):
 PC Card bus.
 Low-speed parallel bus.
 High-speed serial bus.
 Universal Serial Bus (USB).

Ans :   High-speed serial bus.

6. A name for memory packaged on a circuit board is:
 DRAMs.
 SIMMs.
 RDRAMs.
 SRAMs.

Ans :  SIMMs.

7. A measure of computer speed is:
 TB.
 KB.
 MIPS.
 MB.

Ans :  MIPS.

8. What is defined as the number of bits that the CPU processes as a unit?

 A computer sentence
 A computer word
 A computer phrase
 A computer term

Ans :  A computer word

9. Semiconductor memory is:

 Random.
 Volatile.
 Read-only.
 Static.

Ans :  Volatile.

10. What are currently being used in cellular phones, digital cameras, and digital music recorders?

 Micro chips
 SIMM chips
 Flash chips
 RAM chips

Ans :  Flash chips

11. The ultimate speed solution is __________, a method of using multiple processors at the same time.
 parallel processing
 serial processing

Ans :  parallel processing

12. __________ is a processing technique that feeds a new instruction into the CPU at every step of the processing cycle so that four or more instructions are being worked on simultaneously.
 Pipelining
 Caching

Ans :   Pipelining

13. The two parts of the __________ are the control unit and the arithmetic/logic unit.
 central processing unit

 primary storage

Ans :  central processing unit

14. The __________ contains circuitry that uses electrical signals to direct the entire computer system to carry out, or execute, stored program instructions.
 arithmetic/logic unit (ALU)
 control unit

Ans :  control unit

15. Memory is also known as primary storage, primary memory, __________, internal storage, and main memory.
 secondary storage
 main storage

Ans :  main storage

16. Before an instruction can be executed, program instructions and data must be placed into memory from a(n) __________ or a secondary storage device.
 diskette
 input device

Ans :  input device

17. The first two steps that the CPU performs on each instruction are called instruction time, or __________.
 I-time
 machine cycle

Ans :  I-time

18. The last two steps that the CPU performs on each instruction are called execution time or __________.
 I-time
 E-time

Ans :  E-time

19. The combination of I-time and E-time is called the __________.

 instruction set

 machine cycle

Ans :  machine cycle

20. Which systems can interpret sustained speech so that users can speak almost normally?

 Continuous word

 Instant word

 Discrete word

 Virtual word

Ans :  Continuous word