Cisco Certified Support Technician (CCST) NetworkingNetworking FundamentalsMedium
A small business is setting up a new wireless network and wants to use the latest Wi-Fi standard that operates in both 2.4 GHz and 5 GHz bands, supports MIMO (Multiple-Input, Multiple-Output) for better performance, and offers theoretical speeds up to 600 Mbps. Which Wi-Fi standard should they choose?
- A802.11b
- B802.11n
- C802.11a
- D802.11g
Show answer & explanationAnswer & explanation
Correct answer: B. 802.11n
802.11n (Wi-Fi 4) was the first Wi-Fi standard to operate on both 2.4 GHz and 5 GHz bands, introduce MIMO technology, and offer significantly higher theoretical throughputs (up to 600 Mbps) compared to its predecessors.
Why the other options are wrong
- A. 802.11b operates only in the 2.4 GHz band and has very low speeds (up to 11 Mbps) without MIMO.
- C. 802.11a operates only in the 5 GHz band and has lower speeds (up to 54 Mbps) without MIMO.
- D. 802.11g operates only in the 2.4 GHz band and has speeds up to 54 Mbps without MIMO.
802.11n (Wi-Fi 4)
An IEEE standard for wireless local area networks, also known as Wi-Fi 4, that significantly improved upon previous standards by introducing MIMO, channel bonding, and dual-band operation.
- Operates in both 2.4 GHz and 5 GHz frequency bands.
- Introduced MIMO (Multiple-Input, Multiple-Output) technology.
- Theoretical maximum data rate up to 600 Mbps.
- Backward compatible with 802.11a/b/g.
Memory trick: N for New, for Nifty, for Next-level speed.