CWNA Wireless Network Administrator

Answer - C - AES uses the Rijndael algorithm.

Key Takeaway: The Rijndael algorithm is a new generation symmetric block cipher that supports key sizes of 128, 192, and 256 bits, with data handled in 128-bit blocks. The block sizes can mirror those of the keys. Rijndael uses a variable number of rounds, depending on key/block sizes. They include 9 rounds if the key/block size is 128 bits, 11 rounds if the key/block size is 192 bits, and 13 rounds if the key/block size is 256 bits.