CISSP – Information Systems Security Architecture Professional (ISSAP) — Question 1

Maria works as a Network Security Officer for Gentech Inc. She wants to encrypt her network traffic. The specific requirement for the encryption algorithm is that it must be a symmetric key block cipher. Which of the following techniques will she use to fulfill this requirement?

Answer options

• A. IDEA
• B. PGP
• C. DES
• D. AES

Correct answer: D

Explanation

The correct answer is D, AES, as it is a widely used symmetric key block cipher known for its security and efficiency. While IDEA and DES are also symmetric key block ciphers, AES is more robust and is the standard for encryption today. PGP, on the other hand, is primarily used for asymmetric encryption and does not meet the requirement of a symmetric key block cipher.