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1.  
Which memory loses its contents when the power is switched off?

Correct Answer: A [RAM]

Explanation:

RAM is volatile; the ROM family and hard disks are non-volatile.

2.  
One byte is made of:

Correct Answer: C [8 bits]

Explanation:

8 bits = 1 byte; 4 bits = 1 nibble.

3.  
MICR technology is mainly used for:

Correct Answer: B [reading the code line on bank cheques]

Explanation:

MICR reads the magnetic-ink code line printed at the bottom of cheques.

4.  
Which of the following is an output device?

Correct Answer: D [Printer]

Explanation:

A printer gives hard-copy output; the others are input devices.

5.  
Cache memory is usually made of:

Correct Answer: C [SRAM]

Explanation:

Cache needs speed, so it uses SRAM (no refresh).

6.  
2 KB is equal to:

Correct Answer: A [2,048 bytes]

Explanation:

2 × 1,024 = 2,048 bytes.

7.  
Fill in the blank: a group of 4 bits is called a ______.

Correct Answer: D [nibble]

Explanation:

4 bits = 1 nibble; 8 bits = 1 byte.

8.  
Which storage device gives only sequential access?

Correct Answer: B [Magnetic tape]

Explanation:

Tape must be wound past earlier data – sequential access.

9.  
Odd one out:

Correct Answer: D [Hard disk]

Explanation:

CD, DVD and Blu-ray are optical; the hard disk is magnetic.

10.  
Which register holds the instruction that is being executed now?

Correct Answer: A [Instruction Register]

Explanation:

IR = current instruction; PC = next address.

11.  
True or false? "A touch screen works as both an input device and an output device."

Correct Answer: A [True]

Explanation:

You touch it to give input and it displays output.

12.  
Which of the following is an impact printer?

Correct Answer: B [Dot-matrix printer]

Explanation:

Dot-matrix pins strike an inked ribbon – impact.

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