Which arrangement allows higher throughput by combining different 802.11 technologies in the same area?

Which arrangement allows higher throughput by combining different 802.11 technologies in the same area?

• A. Using a single 802.11b AP.
• B. Setting all APs to the same channel.
• C. Using only wired backhaul.
• D. Co-locating FHSS and DSSS APs in the same area.

Answer: (D)

Maximizing wireless throughput comes from letting devices use the path that fits their capabilities while allowing multiple paths to operate in parallel. FHSS and DSSS are two different ways 802.11 can use the 2.4 GHz spectrum. By co-locating APs that implement FHSS with APs that implement DSSS in the same area, you can serve a mix of devices: higher‑speed DSSS devices can transmit more data quickly, while FHSS devices still have a reliable channel to connect. Because these two technologies handle spectrum access differently, they can operate on separate channels or timing schemes, reducing collisions and letting transmissions occur concurrently. The overall air-time is used more efficiently, boosting total throughput for the area. The other setups either cap performance to the slowest technology, cause interference by forcing all APs onto the same channel, or don’t improve the wireless path at all.

Maximizing wireless throughput comes from letting devices use the path that fits their capabilities while allowing multiple paths to operate in parallel. FHSS and DSSS are two different ways 802.11 can use the 2.4 GHz spectrum. By co-locating APs that implement FHSS with APs that implement DSSS in the same area, you can serve a mix of devices: higher‑speed DSSS devices can transmit more data quickly, while FHSS devices still have a reliable channel to connect. Because these two technologies handle spectrum access differently, they can operate on separate channels or timing schemes, reducing collisions and letting transmissions occur concurrently. The overall air-time is used more efficiently, boosting total throughput for the area.

The other setups either cap performance to the slowest technology, cause interference by forcing all APs onto the same channel, or don’t improve the wireless path at all.