CSCU Encryption and Cryptography

Question 1

What is the primary purpose of encryption?

Accepted Answer

To convert readable data into an unreadable format to protect it

Answer

Encryption converts plaintext into ciphertext to protect data from unauthorized access by those without the decryption key.

Question 2

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

Accepted Answer

Symmetric encryption

Answer

Symmetric encryption uses a single shared secret key for both encrypting and decrypting data.

Question 3

In asymmetric encryption, which key is used to encrypt data that only the recipient can decrypt?

Accepted Answer

Public key

Answer

The recipient's public key encrypts data, and only the corresponding private key held by the recipient can decrypt it.

Question 4

What does HTTPS indicate about a website connection?

Accepted Answer

The connection between your browser and the website is encrypted

Answer

HTTPS uses SSL/TLS to encrypt data transmitted between your browser and the web server, protecting it from interception.

Question 5

What is a cipher in the context of cryptography?

Accepted Answer

An algorithm used to encrypt and decrypt data

Answer

A cipher is a cryptographic algorithm that transforms plaintext into ciphertext and reverses the process with the correct key.

CSCU - Certified Secure Computer User Practice Test