What are the working frequency bands of WLAN? (Multiple choice)

Question

Options

• A2 GHz
• B5 GHz
• C5.4 GHz
• D2.4 GHz

• A
  6% (1)
• B
  82% (14)
• C
  12% (2)

Explanation

WLAN (Wi-Fi) standards defined by IEEE 802.11 operate on 2.4 GHz (option D) and 5 GHz (option B) - the two globally recognized frequency bands used by devices like routers and access points. Option A (2 GHz) is incorrect because the actual band is specifically 2.4 GHz, not a rounded 2 GHz - precision matters here. Option C (5.4 GHz) does not exist as a defined WLAN frequency band; the correct value is 5 GHz, and there is no standard rounding to 5.4 GHz in any 802.11 specification.

Memory tip: Think "2.4 and 5" - those are the two numbers every Wi-Fi user sees when connecting to a dual-band router. If an answer shifts either number even slightly (2 instead of 2.4, or 5.4 instead of 5), it's a distractor.

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