Cisco Certified Support Technician (CCST) NetworkingNetworking FundamentalsMedium
A network technician is configuring a new wireless access point (AP) in a public library. To ensure maximum compatibility with older devices while also supporting newer, faster clients, which Wi-Fi standard should the technician primarily enable, considering it's widely adopted and offers good balance of speed and range for typical library use?
- A802.11a
- B802.11g
- C802.11b
- D802.11n
Show answer & explanationAnswer & explanation
Correct answer: D. 802.11n
802.11n (Wi-Fi 4) is the best choice for balancing speed, range, and compatibility. It operates in both 2.4 GHz and 5 GHz bands, provides significantly higher throughput than 'g' and 'b', and is very widely adopted. While newer standards exist, 'n' offers excellent compatibility for a public library setting with diverse client devices.
Why the other options are wrong
- A. 802.11a operates only in the 5 GHz band, has good speed but limited range and compatibility with older 2.4 GHz devices.
- B. 802.11g operates in 2.4 GHz, offering up to 54 Mbps, but 802.11n offers much better performance and range.
- C. 802.11b operates in 2.4 GHz but is very slow (max 11 Mbps), making it unsuitable for modern public access.
802.11n (Wi-Fi 4)
802.11n is a wireless networking standard that operates in both 2.4 GHz and 5 GHz bands, offering significantly improved speed and range compared to previous standards.
- Introduced Multiple-Input Multiple-Output (MIMO) technology.
- Maximum theoretical throughput of up to 600 Mbps.
- Widely adopted, providing a good balance of performance and compatibility.
Memory trick: Newer 'N' is Both Broad and Better.