From the course: Networking Foundations: Networking Basics
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2.4 GHz vs. 5 GHz wireless networking
From the course: Networking Foundations: Networking Basics
2.4 GHz vs. 5 GHz wireless networking
- Wireless LANs typically use radio frequencies and one of two different bands. There's the 2.4 gigahertz band and the five gigahertz band. Now in this video let's consider some of the characteristics of each beginning with the 2.4 gigahertz band. The 2.4 gigahertz band of frequencies gets divided into channels and we have five megahertz of bandwidth between each of those channels, but there's one exception. There's actually 12 megahertz of bandwidth with between channels 13 and 14. However, channel 14 is only allowed in Japan. And then it's only used with the very, very old 802.11b wireless standard. So you'll probably never encounter a network using channel 14. Now big design consideration we have is preventing wireless access points from interfering with one another. Now to do that, we need to assign nearby access points to different channels. But there's a big point of confusion here. If you tell one access point…
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