QuestionQ8

Information Security Concepts

WEP is part of the IEEE 802.11 WLAN standards. Its main purpose is to provide data confidentiality on wireless networks at a level equivalent to that of wired LANs. In a wireless LAN, the network may be accessed without a physical connection to the LAN. At which OSI model layer does WEP use an encryption mechanism to minimize unauthorized access to the WLAN?

  • A Physical layer
  • B Data link layer
  • C Network layer
  • D Application layer
Explanation

WEP protects IEEE 802.11 MAC frames. Because the MAC sublayer is part of the OSI data link layer, WEP encryption is a Layer 2 mechanism.

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