8.2 Quiz

What is encryption?

• The process of locking a device with a password

• The act of sending data over the internet

• The process of changing data using some sort of code

• The method of deleting data securely

Which of the following can be encrypted?

• Your files

• The messages you send to one another

• Both your files and the messages you send to one another

• Neither your files nor the messages you send to one another

What do the shapes represent in the Pigpen cipher?

• The frequency of each letter

• The order of letters in the alphabet

• The encryption key

• Where each letter is on the grid

What is the number substitution for the letter 'M' in the number substitution cipher?

• 13

• 14

• 12

• 15

In the number substitution cipher, what number represents the letter 'E'?

• 3

• 5

• 4

• 2

What indicates that your data is being encrypted when you visit a website?

• The presence of a padlock and "http://" at the start of a website address

• The presence of a padlock and "https://" at the start of a website address

• The presence of a padlock only at the start of a website address

• The absence of a padlock at the start of a website address

What type of encryption is used when data is encrypted using a public "key" that anyone can access?

• Symmetric encryption

• Asymmetric encryption

• Private encryption

• Unencrypted

Who has access to the private key used to decrypt the data in asymmetric encryption?

• Only the user

• Only the website

• Both the website and the user

• Anyone with access to the public key

What are the tiny switches that make up the CPU called?

• Capacitors

• Resistors

• Transistors

• Diodes

What do the transistors in a CPU act as?

• Connectors

• Amplifiers

• Switches

• Converters