Lesson 3 Y10 Mock Preparation

Which of the following is a binary number?

• 1234

• 1011

• 9F2A

• 7.5

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

• Store data permanently

• Process instructions and data

• Display graphics

• Connect to the internet

Which of the following is an example of metadata for a digital image?

• The image’s file size

• The number of colours in the image

• The image’s resolution

• All of the above

What does RAM stand for?

• Readily Available Memory

• Random Access Memory

• Read Access Module

• Rapid Application Memory

Which logic gate outputs TRUE only if both inputs are TRUE?

• OR

• AND

• NOT

• XOR

Which of the following is NOT a data type commonly used in programming?

• Integer

• String

• Fraction

• Boolean

What is the main purpose of data compression?

• To increase file size

• To reduce file size

• To improve image quality

• To change file format

Which of the following is a lossless compression method?

• JPEG

• MP3

• ZIP

• MPEG

What is abstraction in computer science?

• Hiding unnecessary details

• Writing code in binary

• Compressing data

• Encrypting files

Which of the following is a valid pseudocode statement for outputting text?

• PRINT "Hello"

• echo "Hello"

• System.out.println("Hello")

• cout << "Hello";