N10-005 · Question #686
An office has an 802.11a access point. A technician has been asked to identify devices that are compatible with this AP. Which of the following devices is MOST likely compatible?
The correct answer is D. An 802.11n smartphone. 802.11a operates exclusively in the 5 GHz frequency band at up to 54 Mbps. 802.11n is a dual-band standard that operates in both 2.4 GHz and 5 GHz bands, making an 802.11n device backward compatible with an 802.11a AP when connecting via the 5 GHz band. By contrast, 802.11b and…
Question
An office has an 802.11a access point. A technician has been asked to identify devices that are compatible with this AP. Which of the following devices is MOST likely compatible?
Options
- AAn 802.1q SOHO router
- BAn 802.11b tablet computer
- CAn 802.11g laptop
- DAn 802.11n smartphone
How the community answered
(41 responses)- B2% (1)
- C2% (1)
- D95% (39)
Explanation
802.11a operates exclusively in the 5 GHz frequency band at up to 54 Mbps. 802.11n is a dual-band standard that operates in both 2.4 GHz and 5 GHz bands, making an 802.11n device backward compatible with an 802.11a AP when connecting via the 5 GHz band. By contrast, 802.11b and 802.11g are 2.4 GHz-only standards and are not compatible with 802.11a. 802.1q is a VLAN trunking standard, not a wireless standard, so that option is irrelevant entirely.
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