CWNA Wireless Network Administrator

Answer - C - The level of encryption when using a WEP key using a 40-bit secret key concatenated with the initialization vector to form the WEP key is 64-bit.

Key Takeaway: The initialization vector, or IV, is a 24-bit number used to start and track the wireless frames moving between nodes. IV is concatenated with the secret key to yield the WEP key. The 64-bit WEP key is generated with a 40-bit secret key added to a 24-bit IV.