My Phone My PC end of unit test

What does CPU stand for?

• Central Processing Unit

• Computer Peripheral Unit

• Central Peripheral Unit

• Computer Processing Utility

What is the main function of the CPU in a computer?

• To store data permanently

• To process instructions and manage tasks

• To display images on the screen

• To provide power to the computer

Which of the following best describes RAM?

• Permanent storage for files

• Temporary memory used while the computer is running

• Memory that cannot be changed

• A type of processor

What is the main difference between RAM and ROM?

• RAM is permanent, ROM is temporary

• RAM is read-only, ROM can be written to

• RAM is temporary and volatile, ROM is permanent and non-volatile

• RAM is used for storage, ROM is used for processing

Which of the following is an example of a binary number?

• 1010

• 1234

• 9A3F

• 7.5

What is the decimal (base 10) equivalent of the binary number 1101?

• 9

• 11

• 13

• 15

Which character set is most commonly used to represent text in computers?

• ASCII

• JPEG

• MP3

• PDF

What does 'bit depth' refer to in digital images?

• The number of pixels in an image

• The number of colours that can be represented

• The size of the image file

• The speed of image processing

How are images stored in a computer?

• As text files

• As binary data

• As sound waves

• As video files

What does the acronym 'ADC' stand for in the context of sound?

• Analogue Digital Converter

• Analogue to Digital Converter

• Audio Data Compression

• Automatic Data Calculation