Encryption - Lesson 1

The primary purpose of encryption is (a)  

• To store data on a computer
• To encode data so it cannot be read
• To create data backups
• To protect a computer from viruses

Which of the following uses symmetric encryption?

• Encrypting a Wi-Fi network
• Encrypting HTTPS traffic
• Encrypting a USB drive
• Encrypting online payments

In asymmetric encryption, which key is used to decrypt the data?

• Public key
• Private key
• Encryption key
• Decryption key

Why do Wi-Fi access points need encryption?

• To provide network access
• To protect sensitive data from eavesdropping
• To control the speed of the connection
• To improve signal strength

What is plaintext in encryption terms?

• Data that is encrypted
• Data before it is encrypted
• Data that is in transit
• Data that is decrypted

What type of encryption is used in HTTPS?

• Symmetric
• Asymmetric
• Binary
• Block cipher

What is the role of the private key in asymmetric encryption?

• To encrypt data
• To decrypt data
• To store data
• To share data

The key shared between sender and receiver in symmetric encryption is the (a)   key.

• Public key
• Secret shared key
• Decryption key
• Private key

How is data decrypted in symmetric encryption?

• Using a public key
• Using the same key that encrypted the data
• By sharing a secret
• By using a password

Which of the following is a characteristic of asymmetric encryption?

• It uses one key for both encryption and decryption
• It uses separate keys for encryption and decryption
• It is faster than asymmetric encryption
• It is commonly used in Wi-Fi encryption