Which of the following is considered the 'brain' of the computer?

• Hard drive

• CPU

• RAM

• Monitor

What is the main function of RAM in a computer?

• Store permanent files

• Process graphics

• Temporarily store data for quick access

• Connect to the internet

Which Excel formula would you use to add the values in cells A1 to A5?

• =SUM(A1:A5)

• =ADD(A1:A5)

• =TOTAL(A1:A5)

• =PLUS(A1:A5)

In Python, which symbol is used to start a comment?

• //

• #

• %

• --

Which of the following is a strong password?

• password123

• 123456

• Qw!7rT$9

• abcdef

What is an algorithm?

• A type of computer virus

• A step-by-step set of instructions to solve a problem

• A computer language

• A hardware component

Which of the following is NOT an input device?

• Keyboard

• Mouse

• Printer

• Microphone

What does the binary number 1011 represent in decimal?

• 9

• 10

• 11

• 13

Which of these is a valid hexadecimal number?

• 1G3

• 2F7

• 8Z9

• 7H2

What is the main purpose of a firewall?

• To cool the computer

• To protect against unauthorised access

• To increase internet speed

• To store files