Which of the following protocols is the 802.11 standard formulated by IEEE? (Multiple choice)

Question

Options

• A802.11a/b/g/n
• B802.11i
• C802.1X
• D802.11s

• A
  72% (26)
• C
  28% (10)

Explanation

Options A, B, and D are all amendments within the IEEE 802.11 wireless LAN family: 802.11a/b/g/n are the foundational physical-layer variants defining different frequency bands and speeds; 802.11i is the security amendment that introduced WPA2/AES encryption; and 802.11s defines the mesh networking extension. All three carry the "802.11" prefix, placing them squarely in the IEEE wireless LAN standard.

Option C (802.1X) is the distractor - notice it reads "802.1X," not "802.11X." It belongs to the IEEE 802.1 family (LAN/MAN bridging and management), and defines port-based network access control. While 802.1X is often used alongside Wi-Fi for authentication, it is not itself an 802.11 protocol.

Memory tip: Read every answer choice character by character - "802.1X" vs "802.11x" look nearly identical but are completely different standard families. If you see "802.11" at the start, it's Wi-Fi; if you see "802.1" followed by a letter (not another "1"), it's a different IEEE family entirely.

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