H12-311_V3.0 · Question #32
Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-frequency working mode (supporting two working frequency bands of 2.4GHz and 5GHz).
The correct answer is A. True. Option A is correct because 802.11n was the first Wi-Fi standard to support both 2.4GHz and 5GHz frequency bands simultaneously, making it a true dual-band protocol. Its predecessors each operated on a single band: 802.11b and 802.11g used only 2.4GHz, while 802.11a used only…
Question
Unlike the 802.11a/b/g standard, the 802.11n protocol is a dual-frequency working mode (supporting two working frequency bands of 2.4GHz and 5GHz).
Options
- ATrue
- BFalse
How the community answered
(54 responses)- A80% (43)
- B20% (11)
Explanation
Option A is correct because 802.11n was the first Wi-Fi standard to support both 2.4GHz and 5GHz frequency bands simultaneously, making it a true dual-band protocol. Its predecessors each operated on a single band: 802.11b and 802.11g used only 2.4GHz, while 802.11a used only 5GHz. Option B is wrong because it incorrectly suggests 802.11n lacks this dual-band capability, which is one of its defining improvements over the earlier standards.
Memory tip: Think of "n" as standing for "new and flexible" - 802.11n was the generation that finally unified both frequency bands into one standard, giving users the range of 2.4GHz and the speed of 5GHz in a single protocol.
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