SSC CGL Computer – Computer Fundamentals & Generations (optional) – Level 1 · Warm-up

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SSC CGL Computer – Computer Fundamentals & Generations (optional) – Level 1 · Warm-up – 11 questions, subject: Computer Knowledge. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
Computers whose switching devices were valves belong to which generation?

Correct Answer: C [First]

Explanation:

Valve = vacuum tube → generation 1; transistors came in generation 2, ICs in 3, microprocessors in 4.

2.  
Raw facts that are processed to give meaningful results are called:

Correct Answer: B [Data]

Explanation:

Data = raw facts (input); information = processed meaning (output).

3.  
GIGO stands for:

Correct Answer: A [Garbage In, Garbage Out]

Explanation:

Wrong input gives wrong output – the computer only follows what it is given.

4.  
A computer whose entire CPU is on a single microprocessor chip belongs to which generation?

Correct Answer: D [Fourth]

Explanation:

Microprocessor (Intel 4004, 1971) marks the fourth generation.

5.  
The two parts of the CPU that do calculations and give directions are:

Correct Answer: C [ALU and Control Unit]

Explanation:

CPU = ALU (arithmetic and logic) + CU (control).

6.  
Fill in the blankThe Pascaline (1642) was a ______.

Correct Answer: A [mechanical adding machine]

Explanation:

Blaise Pascal built the Pascaline, a mechanical adder.

7.  
The speed of a supercomputer is usually measured in:

Correct Answer: B [FLOPS]

Explanation:

FLOPS = floating-point operations per second.

8.  
A computer that combines the features of analog and digital computers is called a:

Correct Answer: A [Hybrid computer]

Explanation:

Hybrid = analog input + digital processing (e.g.

9.  
The physical parts of a computer that you can touch are called:

Correct Answer: B [Hardware]

Explanation:

Hardware = physical parts; software = programs; liveware = people.

10.  
One-line recallOne nanosecond is equal to:

Correct Answer: D [10⁻⁹ second]

Explanation:

nano = 10⁻⁹; micro = 10⁻⁶; milli = 10⁻³; pico = 10⁻¹².

11.  
Statement-basedWhich is/are correct?
I. Transistors replaced vacuum tubes in second-generation computers.
II. Integrated circuits were first used in fourth-generation computers.

Correct Answer: C [Only I]

Explanation:

I is right. II is wrong: ICs mark the THIRD generation; the fourth is marked by microprocessors.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 Computer Knowledge book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-computer-knowledge

📘 SSC CGL 2026 – Computer Knowledge (Tier II Paper I – Section III)
Here you get the answer with a one-line explanation. 672 original questions with answer key and explanations · notes, figures, shortcut keys and memory aids · practice sets + 3 Computer Knowledge mock tests
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