TELECOMMUNICATIONS SYSTEMS
COMMUNICATION WIRELESS COMPUTING DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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It functions only on specific brands of APs.
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Its usage creates a detectable pattern.
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It slows down a WLAN from 104 Mbps to 16 Mbps.
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Initialization vectors (IVs) are difficult for users to manage.
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Detailed explanation-1: -What is the primary weakness of wired equivalent privacy (WEP)? It functions only on specific brands of APs. Its usage creates a detectable pattern. It slows down a WLAN from 104 Mbps to 16 Mbps.
Detailed explanation-2: -WEP only supports 64-bit or 128-bit encryption key sizes, which can be more easily decrypted than the larger 256-bit encryption key. WEP is limited to the use of hexadecimal characters, which only allow for numbers 0–9 and the letters A–F. The key length is therefore not very secure.
Detailed explanation-3: -WEP has suffered from key management problems, implementation errors, and overall weakness in the encryption mechanism. WEP may raise the bar for an attacker but provides no real security from a determined attacker.
Detailed explanation-4: -WEP is vulnerable because the relatively short IVs and keys remain static. Within a short amount of time, WEP eventually uses the same IV for different data packets. For a large busy network, the same IVs can be used within an hour or so.