WAEC Computer Science Past Questions & Answers

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1.

The type of computers that are designed to perform complex calculations extremely rapidly are called ?

A.

supercomputer

B.

micro computers

C.

laptops

D.

mainframe computer

Correct answer is A

Supercomputers are designed to perform complex calculations extremely rapidly. They are the fastest and most powerful type of computer, often used for large-scale simulations, such as weather forecasting, climate research, molecular modeling, and physical simulations

2.

The number of entries in the figure above is?

A.

3

B.

4

C.

5

D.

12

Correct answer is A

No explanation has been provided for this answer.

3.

Ethical practice requires a computer user to 

A.

shutdown properly

B.

hack into other peoples computer

C.

intrude into peoples privacy

D.

copy software without the license

Correct answer is A

No explanation has been provided for this answer.

4.

Duplicating copyrighted electronic or digital content without the authors approval is considered?

A.

felonious

B.

ethical

C.

treasonable

D.

unethical

Correct answer is A

No explanation has been provided for this answer.

5.

Serial files are

A.

stored using a key

B.

sorted in a particular order

C.

stored as they come

D.

stored in any storage media

Correct answer is C

No explanation has been provided for this answer.

6.

The file access method illustrated in the diagram above is called?

A.

hashed access

B.

indexed access

C.

random access

D.

sequential access

Correct answer is B

No explanation has been provided for this answer.

7.

Sequential files are?

A.

sorted using index

B.

sorted in a particular order

C.

stored as they come

D.

stored in any storage media

Correct answer is B

No explanation has been provided for this answer.

8.

The octal fraction 0.65 converts to binary as

A.

0.110011

B.

0.110101

C.

101101

D.

101101

Correct answer is B

No explanation has been provided for this answer.

9.

127\(_{16}\) to  50A\(_{16}\)

A.

629\(_{16}\)

B.

630\(_{16}\)

C.

631\(_{16}\)

D.

632\(_{16}\)

Correct answer is C

No explanation has been provided for this answer.

10.

In number system ,base 16 is called ?

A.

hexadecimal

B.

decimal

C.

duodecimal

D.

octal

Correct answer is A

No explanation has been provided for this answer.