Implementing and Operating Cisco Security Core Technologies (SCOR) — Question 179

Which two descriptions of AES encryption are true? (Choose two.)

Answer options

• A. AES is less secure than 3DES.
• B. AES is more secure than 3DES.
• C. AES can use a 168-bit key for encryption.
• D. AES can use a 256-bit key for encryption.
• E. AES encrypts and decrypts a key three times in sequence.

Correct answer: B, D

Explanation

Option B is correct because AES is widely recognized as more secure than 3DES due to its advanced encryption methods. Option D is also correct as AES supports key lengths of 128, 192, and 256 bits. Options A, C, and E are incorrect; AES is not less secure than 3DES, does not use a 168-bit key, and does not encrypt a key three times.