220-801 · Question #283
Which of the following 802.11 wireless standards provides a maximum of 54Mbps data transmission over an uncongested 5GHz spectrum?
The correct answer is A. A. IEEE 802.11a operates exclusively on the 5GHz band with a maximum data rate of 54Mbps, distinguishing it from other standards that use 2.4GHz.
Question
Which of the following 802.11 wireless standards provides a maximum of 54Mbps data transmission over an uncongested 5GHz spectrum?
Options
- AA
- BB
- CG
- DN
How the community answered
(18 responses)- A94% (17)
- C6% (1)
Why each option
IEEE 802.11a operates exclusively on the 5GHz band with a maximum data rate of 54Mbps, distinguishing it from other standards that use 2.4GHz.
802.11a was ratified in 1999 and operates solely on the 5GHz frequency band, providing a maximum throughput of 54Mbps. The 5GHz band is less congested than 2.4GHz because fewer consumer devices use it. This specific combination - 5GHz spectrum and 54Mbps ceiling - is the defining characteristic that separates 802.11a from all other early Wi-Fi standards.
802.11b operates on the 2.4GHz band and has a maximum data rate of only 11Mbps, not 54Mbps.
802.11g achieves 54Mbps but operates on the 2.4GHz band, not the 5GHz spectrum.
802.11n supports up to 600Mbps using MIMO and can operate on both 2.4GHz and 5GHz bands, far exceeding the 54Mbps specification described.
Concept tested: IEEE 802.11 wireless standard frequencies and data rates
Source: https://standards.ieee.org/ieee/802.11a/1165/
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