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1.  
Consider the following statements about measuring computer speed:
I. MIPS stands for Million Instructions Per Second.
II. One PetaFLOPS is 1,000 TeraFLOPS.
III. A clock speed of 3 GHz means 3 million cycles per second.
Which of the statements given above is/are correct?

Correct Answer: B [Only I and II]

Explanation:

I true; II true (each prefix step is × 1,000); III false – giga = billion, so 3 GHz = 3 billion cycles per second.

2.  
Consider the following statements about classification of computers:
I. A supercomputer's speed is measured in FLOPS.
II. A laptop is an example of a minicomputer.
III. A computer can be digital, a microcomputer and general-purpose at the same time.
Which of the statements given above is/are correct?

Correct Answer: D [Only I and III]

Explanation:

I true; II false (laptop = microcomputer); III true – the three bases are independent.

3.  
Which pair is correctly matched?

Correct Answer: E [Second generation – Transistors]

Explanation:

Only transistors–second is right; ICs third, microprocessors fourth, vacuum tubes first.

4.  
How many of the following are input devices? Keyboard, Scanner, Monitor, Microphone, Printer, Mouse

Correct Answer: B [4]

Explanation:

Input: keyboard, scanner, microphone, mouse = 4; monitor and printer are output.

5.  
Arrange in the order in which they appeared: (P) Integrated circuits (Q) Vacuum tubes (R) Microprocessors (S) Transistors

Correct Answer: C [QSPR]

Explanation:

Vacuum tubes → transistors → ICs → microprocessors = Q S P R.

6.  
Match the unit with its job:
List I: (a) ALU; (b) Control Unit; (c) Registers; (d) Secondary storage
List II: (1) compares two numbers; (2) keeps data permanently; (3) decodes instructions; (4) hold data inside the CPU

Correct Answer: D [a-1, b-3, c-4, d-2]

Explanation:

ALU compares; CU decodes; registers hold current data; secondary storage is permanent.

7.  
Consider the following statements:
I. Data is the output of processing.
II. Information is made from data.
III. A list of cheque numbers received is data.
Which of the statements given above is/are correct?

Correct Answer: D [Only II and III]

Explanation:

I false – data is the input, information the output; II and III true.

8.  
Which pair is NOT correctly matched?

Correct Answer: A [Herman Hollerith – Analytical Engine]

Explanation:

The Analytical Engine was Babbage's; Hollerith built the punched-card tabulating machine.

9.  
Consider the following statements about characteristics of a computer:
I. A computer can decide on its own what job to do next without a program.
II. Versatility means the same computer can do many different kinds of jobs.
III. Wrong input can produce wrong output even when the computer works perfectly.
Which of the statements given above is/are correct?

Correct Answer: D [Only II and III]

Explanation:

I false (no IQ); II true; III true (GIGO).

10.  
Which arrangement of time units is in increasing order?

Correct Answer: B [picosecond < nanosecond < microsecond < millisecond]

Explanation:

pico 10⁻¹² < nano 10⁻⁹ < micro 10⁻⁶ < milli 10⁻³.

11.  
Match the computer with the classification it best fits:
List I: (a) ICU patient-monitoring system; (b) Needle speedometer; (c) Washing-machine controller; (d) Mainframe
List II: (1) hybrid; (2) bulk transactions for thousands of users; (3) analog; (4) special-purpose

Correct Answer: E [a-1, b-3, c-4, d-2]

Explanation:

ICU monitor – hybrid; speedometer – analog; washing-machine controller – special-purpose; mainframe – bulk transactions.

12.  
Consider the following statements:
I. The Intel 4004 was a complete mainframe computer.
II. ENIAC and UNIVAC I belong to the same generation.
III. IBM 1401 was a transistor-based machine.
Which of the statements given above is/are correct?

Correct Answer: D [Only II and III]

Explanation:

I false – the 4004 is a microprocessor; II true (both first generation); III true (second generation).

13.  
In the context of supercomputers, FLOPS stands for:

Correct Answer: D [Floating-point Operations Per Second]

Explanation:

FLOPS = Floating-point Operations Per Second – the speed measure of supercomputers.

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