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CCNA® Cisco Certified Network Associate: Study Guide, Seventh Edition by Todd Lammle

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Wireless Regulations

Most wireless networks use the Industrial, Scientific, and Medical (ISM) band. But being able to use a band, or “range of frequencies,” doesn’t mean you get to use it in any way you want. To get wireless devices to communicate together, these hosts need to understand the various modulation technique to use, how a frame should be coded, what type of headers need to be in that frame, what the physical transmission mechanism should be, and so on. Plus, they’ve all got to be accurately defined or machines just won’t be capable of communicating with each other effectively. And all these elements just happen to be specified by the IEEE.

The IEEE’s communication committee defined several network communication areas, which were then ...

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