As part of the IEEE 802.11 standard ratified in September 1999, WEP uses the CRC- 32 checksum for:

A. integrity.

B. validity.

C. accuracy.

D. confidentiality.

E. None of the choices.

Explanation:

As part of the IEEE 802.11 standard ratified in September 1999, WEP uses the stream cipher RC4 for confidentiality and the CRC-32 checksum for integrity.

Many WEP systems require a key in hexadecimal format. If one chooses keys that spell words in the limited 0-9, A-F hex character set, these keys can be easily guessed.