Which of the following is the only encryption used?

A system administrator wants to enable WPA2 CCMP. Which of the following is the only encryption used?

A.
RC4

B.
DES

C.
3DES

D.
AES

Explanation:
Cipher Block Chaining Message Authentication Code Protocol (CCMP) makes use of 128-bit AES
encryption with a 48-bit initialization vector.
Incorrect Answers:
A, B, C: These are not used by CCMP

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, 6th Edition, Sybex, Indianapolis,
2014, pp. 172, 250