CWNA Wireless Network Administrator

Answer - B - Some FHSS systems that operate at 2.4 GHz and a speed of 3 Mbps are non-interoperable with other FHSS systems.

Key Takeaway: FHSS systems that can transmit data at 3 Mbps may or may not have the ability to slow their data rate to 2 Mbps or 1 Mbps as specified by the 802.11 standard. These systems comply with the IEEE standard if they transmit at 2 Mbps and 1 Mbps, or the OpenAir standard if they could transmit at 1.6 Mbps and 800 kbps. When they transmit at any other speeds, they are not compliant with either standard.