312-50V10 · Question #283
WPA2 uses AES for wireless data encryption at which of the following encryption levels?
The correct answer is C. 128 bit and CCMP. WPA2 mandates AES encryption at 128-bit strength paired with CCMP as the message integrity and encryption protocol.
Question
WPA2 uses AES for wireless data encryption at which of the following encryption levels?
Options
- A64 bit and CCMP
- B128 bit and CRC
- C128 bit and CCMP
- D128 bit and TKIP
How the community answered
(49 responses)- A4% (2)
- B2% (1)
- C92% (45)
- D2% (1)
Why each option
WPA2 mandates AES encryption at 128-bit strength paired with CCMP as the message integrity and encryption protocol.
WPA2 does not use 64-bit key lengths; 64-bit is associated with older, weaker encryption schemes like early WEP variants.
CRC (Cyclic Redundancy Check) is an error-detection mechanism, not an encryption protocol, and is not part of the WPA2 security suite.
WPA2 replaced WEP and WPA by standardizing on AES with a 128-bit key length. CCMP (Counter Mode with CBC-MAC Protocol) is the mandatory encryption and message integrity protocol in WPA2, providing both confidentiality and data integrity for wireless frames.
TKIP (Temporal Key Integrity Protocol) was used in WPA (the predecessor to WPA2) as a stopgap fix for WEP and is not the protocol used in WPA2.
Concept tested: WPA2 AES-CCMP encryption standard and key length
Source: https://www.cisco.com/c/en/us/support/docs/wireless/aironet-1600-series/113678-aironet-wpa2-00.html
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