What are the wireless LAN standards that support the 5GHz frequency band? (Multiple choice)

The correct answer is A. 802.11a D. 802.11n. 802.11a operates exclusively on the 5GHz band, and 802.11n is a dual-band standard that supports both 2.4GHz and 5GHz, making both A and D correct. 802.11b and 802.11g (choices B and C) are 2.4GHz-only standards - 802.11b was the early consumer Wi-Fi standard (up to 11 Mbps)…

WLAN Basic Knowledge

Question

Options

A802.11a
B802.11b
C802.11g
D802.11n

How the community answered

(42 responses)

A
76% (32)
B
10% (4)
C
14% (6)

Explanation

802.11a operates exclusively on the 5GHz band, and 802.11n is a dual-band standard that supports both 2.4GHz and 5GHz, making both A and D correct.

802.11b and 802.11g (choices B and C) are 2.4GHz-only standards - 802.11b was the early consumer Wi-Fi standard (up to 11 Mbps), and 802.11g improved speeds to 54 Mbps but stayed on 2.4GHz.

A helpful memory tip: think "a" = above - 802.11a was designed to operate above the crowded 2.4GHz range on the 5GHz band. For 802.11n, remember "n" = numerous bands, since it was the first mainstream standard to support both frequencies. Standards b and g both rhyme with "cheap and easy," which fits the less-congested, mass-market 2.4GHz band they share.

Topics

#IEEE 802.11 Standards#5GHz Frequency Band#WLAN Spectrum#Standard Specifications

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