Which of the following wireless standards uses a block encryption cipher rather than a stream
cipher?

A.
WPA2-CCMP

B.
WPA

C.
WEP

D.
WPA2-TKIP

Explanation:

Counter Cipher Mode with Block Chaining Message Authentication Code Protocol or CCMP (CCM
mode Protocol) is an encryption protocol designed for Wireless LAN products that implement the
standards of the IEEE 802.11i amendment to the original IEEE 802.11 standard. CCMP is an
enhanced data cryptographic encapsulation mechanism designed for data confidentiality and
based upon the Counter Mode with CBC-MAC (CCM) of the AES standard. It was created to
address the vulnerabilities presented by WEP, a dated, insecure protocol.