Which Wi-Fi standard uses 2.4 GHz and has a maximum speed of 11 Mbps?

Which Wi-Fi standard uses 2.4 GHz and has a maximum speed of 11 Mbps?

• A. 802.11b
• B. 802.11a
• C. 802.11g
• D. 802.11n

Answer: (A)

The main idea here is matching a Wi‑Fi standard to its frequency band and its typical maximum data rate. A standard that operates in the 2.4 GHz band and has a maximum speed of 11 Mbps is the early 802.11b standard. It was designed to share the crowded 2.4 GHz space and uses a modest 11 Mbps ceiling to maintain reliability in environments with many nearby devices. Why this fits: 802.11a runs in the 5 GHz band and delivers much higher speeds, so it’s not a match. 802.11g does use 2.4 GHz but supports up to 54 Mbps, which is well above 11 Mbps. 802.11n can use 2.4 GHz or 5 GHz and typically provides hundreds of Mbps with MIMO, far exceeding 11 Mbps. So the combination of 2.4 GHz operation with an 11 Mbps maximum is specific to 802.11b.

The main idea here is matching a Wi‑Fi standard to its frequency band and its typical maximum data rate. A standard that operates in the 2.4 GHz band and has a maximum speed of 11 Mbps is the early 802.11b standard. It was designed to share the crowded 2.4 GHz space and uses a modest 11 Mbps ceiling to maintain reliability in environments with many nearby devices.

Why this fits: 802.11a runs in the 5 GHz band and delivers much higher speeds, so it’s not a match. 802.11g does use 2.4 GHz but supports up to 54 Mbps, which is well above 11 Mbps. 802.11n can use 2.4 GHz or 5 GHz and typically provides hundreds of Mbps with MIMO, far exceeding 11 Mbps. So the combination of 2.4 GHz operation with an 11 Mbps maximum is specific to 802.11b.