312-50V11 · Question #758
WPA2 uses AES for wireless data encryption at which of the following encryption levels?
The correct answer is C. 128 bit and CCMP. WPA2 uses AES encryption at a 128-bit key length paired with CCMP, which provides both data confidentiality and integrity per the IEEE 802.11i standard.
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 bi and TKIP
How the community answered
(19 responses)- A5% (1)
- B5% (1)
- C89% (17)
Why each option
WPA2 uses AES encryption at a 128-bit key length paired with CCMP, which provides both data confidentiality and integrity per the IEEE 802.11i standard.
64-bit key encryption is associated with legacy WEP, not WPA2; WPA2 requires a minimum of 128-bit AES keys.
CRC (Cyclic Redundancy Check) is an error-detection mechanism used in WEP for integrity checking, not a feature of WPA2, which uses CCMP for integrity.
WPA2 is defined by IEEE 802.11i and mandates AES (Advanced Encryption Standard) as its cipher operating at a 128-bit key length. CCMP (Counter Mode with Cipher Block Chaining Message Authentication Code Protocol) is the protocol encapsulating AES in WPA2, handling both encryption of frames and cryptographic integrity verification - replacing the weaker RC4/TKIP combination used in WPA.
TKIP (Temporal Key Integrity Protocol) was the integrity protocol introduced with WPA1 as a backward-compatible improvement over WEP; WPA2 replaced it with the stronger AES-CCMP pairing.
Concept tested: WPA2 AES-CCMP 128-bit encryption standard
Source: https://www.wi-fi.org/discover-wi-fi/security
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