220-801 · Question #75
For a wireless network configured to use WPA2 with AES encryption, which of the following is the MAXIMUM bit strength of the encryption?
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
How the community answered
(40 responses)- B3% (1)
- C93% (37)
- D5% (2)
Why each option
WPA2 with AES (Advanced Encryption Standard) supports a maximum key length of 256 bits, making it the strongest configuration available under that standard.
64-bit encryption is associated with the older, weaker WEP standard and is not a key size used by AES.
128 bits is the minimum AES key size and a valid WPA2/AES configuration, but it is not the maximum bit strength available.
AES is a symmetric block cipher that supports three key lengths: 128, 192, and 256 bits. When WPA2 is configured to use AES (also referred to as CCMP), the maximum and strongest key strength achievable is 256 bits, providing a very high level of cryptographic security.
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
Source: https://learn.microsoft.com/en-us/windows/security/operating-system-security/network-security/wifi/wi-fi-security
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