Data Representation - SS3 ICT Past Questions and Answers - page 1
What is data representation?
The process of converting data into human-readable text
The process of converting data into a format suitable for computers
The process of encrypting data for security
The process of deleting unnecessary data
Which numerical system is commonly used to represent data in computers?
Decimal
Hexadecimal
Octal
All of the above
Which character encoding scheme is known for representing text using 7 or 8 bits per character?
Unicode
UTF-8
ASCII
Binary
How are images typically represented in computers?
As a series of words
As a list of pixels with color values
As plain text
As a series of audio samples
Which file format is commonly used to represent images with lossless compression?
JPEG
PNG
GIF
BMP
What does UTF-16 represent in Unicode?
A 16-bit character encoding
A 32-bit character encoding
A 64-bit character encoding
A 128-bit character encoding
Which character encoding is capable of representing characters from various writing systems worldwide?
ASCII
UTF-8
Binary
Hexadecimal
How does Unicode differ from ASCII?
Unicode uses 7-bit encoding, while ASCII uses 8 bits.
Unicode is a character encoding, while ASCII is a numeric encoding.
Unicode supports a broader range of characters than ASCII.
Unicode is only used for programming languages.
What is the purpose of data representation in computer science?
To confuse users
To make data unreadable
To convert data into a format computers can process
To represent data in handwritten form
Which character set is commonly used for representing text data in English and other Western languages?
Unicode
ASCII
UTF-16
Hexadecimal