220-801 · Question #120
Which of the following wireless standards operates at 5GHz? (Select TWO).
The correct answer is A. 802.11a E. 802.11n. IEEE 802.11a operates exclusively at 5 GHz, and 802.11n is a dual-band standard capable of operating at both 2.4 GHz and 5 GHz.
Question
Which of the following wireless standards operates at 5GHz? (Select TWO).
Options
- A802.11a
- B802.11b
- C802.11bg
- D802.11g
- E802.11n
How the community answered
(26 responses)- A92% (24)
- B4% (1)
- D4% (1)
Why each option
IEEE 802.11a operates exclusively at 5 GHz, and 802.11n is a dual-band standard capable of operating at both 2.4 GHz and 5 GHz.
802.11a was one of the first Wi-Fi standards and operates exclusively in the 5 GHz band, providing up to 54 Mbps throughput with less interference than 2.4 GHz.
802.11b operates exclusively at 2.4 GHz with a maximum throughput of 11 Mbps.
802.11bg is a combined designation for devices supporting both 802.11b and 802.11g, both of which operate only at 2.4 GHz.
802.11g operates exclusively at 2.4 GHz, providing up to 54 Mbps, and is backward compatible with 802.11b.
802.11n (Wi-Fi 4) is a dual-band standard that can operate at either 2.4 GHz or 5 GHz, making it qualify as a 5 GHz-capable standard along with 802.11a.
Concept tested: Wireless 802.11 standards and frequency band identification
Source: https://www.comptia.org/certifications/a
Topics
Community Discussion
No community discussion yet for this question.