OCR Computer Science GCSE Quiz

What is the binary representation of the decimal number 25?

• 10011

• 11100

• 10101

• 11001

Which programming language is commonly used for GCSE Computer Science?

• C++

• Python

• JavaScript

• Java

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

• Manages internet connection

• Stores data and files

• Executes instructions and performs calculations

• Displays images and videos

What is the purpose of a router in a network?

• To play music for the network users

• To cook food for the network users

• To connect different networks and route data packets between them.

• To provide weather updates for the network users

What is a linear search algorithm used for?

• Sorting a list in descending order

• Finding the average of all the values in a list

• Counting the number of elements in a list

• Searching for a specific value within a list

How many bits are in a byte?

• 8

• 4

• 12

• 16

What is the purpose of a variable in programming?

• To make the code look more complicated

• To slow down the program

• To store and manipulate data in a program

• To confuse other programmers

What is the binary equivalent of the hexadecimal number A5?

• 11110000

• 10011010

• 10100101

• 11001001

What is the function of RAM in a computer system?

• To permanently store data and instructions for the CPU

• To cool down the CPU

• To temporarily store data and instructions for the CPU

• To display images on the monitor

What is the purpose of an if statement in programming?

• To make a decision based on a condition

• To perform a loop iteration

• To define a function

• To print a message to the console