220-801 Question #75: Real Exam Question with Answer & Explanation

The correct answer is C: 256 bits. WPA2 with AES (Advanced Encryption Standard) supports a maximum key length of 256 bits, making it the strongest configuration available under that standard.

Question

For a wireless network configured to use WPA2 with AES encryption, which of the following is the MAXIMUM bit strength of the encryption?

Options

A64 bits
B128 bits
C256 bits
D1024 bits

Explanation

WPA2 with AES (Advanced Encryption Standard) supports a maximum key length of 256 bits, making it the strongest configuration available under that standard.

Common mistakes.

A. 64-bit encryption is associated with the older, weaker WEP standard and is not a key size used by AES.
B. 128 bits is the minimum AES key size and a valid WPA2/AES configuration, but it is not the maximum bit strength available.
D. 1024 bits is not a valid AES key size; AES is defined only at 128, 192, and 256-bit key lengths.

Concept tested. WPA2 AES encryption maximum key strength

Reference. https://learn.microsoft.com/en-us/windows/security/operating-system-security/network-security/wifi/wi-fi-security

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