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Data Representation - SS3 ICT Past Questions and Answers - page 1

1

What is data representation?

A

The process of converting data into human-readable text

B

The process of converting data into a format suitable for computers

C

The process of encrypting data for security

D

The process of deleting unnecessary data

correct option: b
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2

Which numerical system is commonly used to represent data in computers?

A

Decimal

B

Hexadecimal

C

Octal

D

All of the above

correct option: b
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3

Which character encoding scheme is known for representing text using 7 or 8 bits per character?

A

Unicode

B

UTF-8

C

ASCII

D

Binary

correct option: c
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4

How are images typically represented in computers?

A

As a series of words

B

As a list of pixels with color values

C

As plain text

D

As a series of audio samples

correct option: b
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5

Which file format is commonly used to represent images with lossless compression?

A

JPEG

B

PNG

C

GIF

D

BMP

correct option: b
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6

What does UTF-16 represent in Unicode?

A

A 16-bit character encoding

B

A 32-bit character encoding

C

A 64-bit character encoding

D

A 128-bit character encoding

correct option: a
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7

Which character encoding is capable of representing characters from various writing systems worldwide?

A

ASCII

B

UTF-8

C

Binary

D

Hexadecimal

correct option: b
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8

How does Unicode differ from ASCII?

A

Unicode uses 7-bit encoding, while ASCII uses 8 bits.

B

Unicode is a character encoding, while ASCII is a numeric encoding.

C

Unicode supports a broader range of characters than ASCII.

D

Unicode is only used for programming languages.

correct option: c
Users' Answers & Comments
9

What is the purpose of data representation in computer science?

A

To confuse users

B

To make data unreadable

C

To convert data into a format computers can process

D

To represent data in handwritten form

correct option: c
Users' Answers & Comments
10

Which character set is commonly used for representing text data in English and other Western languages?

A

Unicode

B

ASCII

C

UTF-16

D

Hexadecimal

correct option: b
Users' Answers & Comments
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