Exploring Binary and Cryptography

What is the binary representation of the decimal number 10?

• 1010

• 1100

• 1001

• 1110

Which of the following is a basic cryptography technique?

• Sorting

• Encryption

• Multiplication

• Division

What does a diamond shape represent in a flow diagram?

• Start/End

• Process

• Decision

• Input/Output

Which logic gate outputs true only when both inputs are true?

• OR

• AND

• NOT

• XOR

What is the main purpose of data encryption?

• To increase data size

• To make data unreadable to unauthorised users

• To compress data

• To delete data

How do you decode the binary message 01000001?

• B

• A

• C

• D

Which of the following is NOT a flow diagram symbol?

• Circle

• Rectangle

• Diamond

• Parallelogram

What is the output of an OR gate if both inputs are false?

• True

• False

• Undefined

• True and False

Which method is commonly used for encrypting data?

• Subtraction

• Caesar Cipher

• Addition

• Multiplication

What is the binary equivalent of the decimal number 5?

• 101

• 110

• 111

• 100