2.3 Wireless Technologies

What does the 802.11 committee of the IEEE do?

Creates worldwide standards for wireless technology.

What are the frequencies that 802.11 technologies utilize?

2.4 GHz, 5 GHz, 6 GHz, and sometimes a combination of these frequencies.

What are channels?

Groups of frequencies, numbered by the IEEE.

What are different types of bandwidth?

20 MHz, 40 MHz, 80 MHz, and 160 MHz are common bandwidths.

How can frequencies not always be optimal?

Some devices may operate at a single frequencies, while other might not have many choices.

What can you use to steer clients to best frequency?

Band sterring.

Why is managing the wireless spectrum a challenge?

World is constantly changing and industry standards are also often worldwide standards.

What does the IEEE 802.11h standard do?

Adds interoperability features to 802.11.

What is Dynamic Frequency Selection (DFS)?

Looks at different frequencies that will work for your devices, telling clients when they need to move with the access point.

What is Transmit Power Control (TPC)?

Avoids conflict with satellite services, with the access point determining the power output of the client.