CompTIA
220-801 · Question #452
220-801 Question #452: Real Exam Question with Answer & Explanation
The correct answer is A: 802.11a. Note: The question likely means 5 GHz, not 5 MHz. 802.11a operates exclusively on the 5 GHz band, which offers less interference but shorter range than 2.4 GHz. 802.11b and 802.11g both operate only on the 2.4 GHz band. 802.11n is dual-band, capable of using both 2.4 GHz and 5 GH
Question
Which of the following wireless standards broadcasts in the 5 MHz range only?
Options
- A802.11a
- B802.11b
- C802.11g
- D802.11n
Explanation
Note: The question likely means 5 GHz, not 5 MHz. 802.11a operates exclusively on the 5 GHz band, which offers less interference but shorter range than 2.4 GHz. 802.11b and 802.11g both operate only on the 2.4 GHz band. 802.11n is dual-band, capable of using both 2.4 GHz and 5 GHz. Therefore, 802.11a is the only listed standard that is exclusively 5 GHz.
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