Which Wi-Fi standard operates in the 2.4 GHz band and supports up to 54 Mbps?

Which Wi-Fi standard operates in the 2.4 GHz band and supports up to 54 Mbps?

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

Answer: (C)

Understanding which Wi‑Fi standard matches a given frequency and speed helps you read the spec like a profiler’s map. The 2.4 GHz band hosts several standards, but the one that reaches up to 54 Mbps there uses OFDM modulation to boost data rates while staying in that same spectrum. That standard also introduced backward compatibility with the older 11 Mbps 802.11b devices, making upgrades smoother. In contrast, 802.11a operates in the 5 GHz band, and 802.11n can run on 2.4 GHz or 5 GHz but supports much higher speeds than 54 Mbps. So the standard that fits both the 2.4 GHz operation and the 54 Mbps maximum is 802.11g.

Understanding which Wi‑Fi standard matches a given frequency and speed helps you read the spec like a profiler’s map. The 2.4 GHz band hosts several standards, but the one that reaches up to 54 Mbps there uses OFDM modulation to boost data rates while staying in that same spectrum. That standard also introduced backward compatibility with the older 11 Mbps 802.11b devices, making upgrades smoother. In contrast, 802.11a operates in the 5 GHz band, and 802.11n can run on 2.4 GHz or 5 GHz but supports much higher speeds than 54 Mbps. So the standard that fits both the 2.4 GHz operation and the 54 Mbps maximum is 802.11g.