What are four features of WPA? (Choose four.)

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What are four features of WPA? (Choose four.)
A . a larger initialization vector, increased to 48 bits
B . a message integrity check protocol to prevent forgeries
C . authenticated key management using 802.1X
D . support for a key caching mechanism
E . unicast and broadcast key management
F . requires AES-CCMP

Answer: A, B, C, E