Worksheets1.2 The basics of encryption
Total questions: 10
Worksheet time: 8mins
When we convert numbers to binary we use the digits____?
0 and 1
1, 2, 4, 8, 16
5, 10, 15, 20
Alan Turing helped decrypt coded messages from the Germans. What was the name of the machine he tried to decrypt messages from?
Enigma
London Bridge
Apple Mac
Alan Turing helped decrypt codes that helped during which era?
Word War 2
The 1980s
The Millennium
What is encryption?
Building tombs
Protecting data by scrambling it
Unscrambling data to read it
The word---------- means to unscramble a message so that it makes sense again.
key
decryption
cipher
A string of text that has been converted to a secure form using encryption.
encryption
ciphertext
plaintext
What is the main purpose of encryption?
Speed up data transmission.
Increase data size.
Transform data into a form that is difficult to understand by unauthorized parties.
Which of the following is not an example of encryption application in everyday life?
Password to unlock a phone.
Online transactions using credit cards.
Reading books.
