J277 - 1.6 - Encryption Techniques

What is the primary purpose of encrypting data sent over a network?

• To increase the speed of data transmission

• To make the data unreadable if intercepted

• To reduce the size of the data

• To ensure data is sent in the correct order

Which type of encryption uses the same key for both encryption and decryption?

• Asymmetric encryption

• Symmetric encryption

• Public key encryption

• Hashing

Why are symmetric encryption schemes generally faster than asymmetric encryption schemes?

• They use more complex mathematical operations

• They use less complex mathematical operations

• They require more keys

• They use larger keys

What is the main difference between symmetric and asymmetric encryption?

• Symmetric encryption uses two keys, while asymmetric uses one

• Symmetric encryption uses one key, while asymmetric uses two related keys

• Symmetric encryption is slower than asymmetric encryption

• Symmetric encryption is more secure than asymmetric encryption

Which of the following is a characteristic of asymmetric encryption?

• It uses the same key for encryption and decryption

• It is generally faster than symmetric encryption

• It uses a public key and a private key

• It is not suitable for network communications