Data Representation

Which of the following is the standard code used by computers to represent text characters ?

• ASCII

• Binary Code

• JPEG

• PDF

How many bits are used to represent a single character in ASCII ?

• 4 bits

• 8 bits

• 16 bits

• 32 bits

Which of the following extends ASCII to support more characters such as different languages ?

• Unicode

• ASCII++

• Hexcode

• UNCHR

Convert this binary to denary: 101010

• 52

• 32

• 42

• 12

What is a pixel ?

• computer virus

• smallest unit of a digital image

• programming language

• image compression method

Which color model do computers typically use to represent images ?

• RDB

• RQB

• RGB

• RCB

Convert this hexadecimal to denary: 1A

• 26

• 36

• 27

• 37

Which of the following determines the quality of a digital sound recording ?

• Bitrate

• Sample Rate

• Color Depth

• Dimension

Which compression commonly used for text ?

• lossy compression

• lossless compression

• losing compression

• less compression

What is the binary for 15 ?

• 1111

• 1110

• 1100

• 1101