正解:A
WEP (Wired Equivalent Privacy) is known to be the weakest wireless security protocol due to its vulnerabilities and ease of being compromised.
* WEP: The oldest and weakest protocol, susceptible to various attacks and easily cracked.
* WPA2: Much stronger security with AES encryption, currently one of the most secure standards.
* TKIP: Used with WPA, stronger than WEP but weaker than WPA2 with AES.
* AES: Advanced Encryption Standard, used in WPA2 and known for strong security.
Reference: CompTIA A+ Exam Objectives [220-1102] - 2.2: Compare and contrast wireless security protocols and authentication methods.