March 2026
Intermediate to advanced
400 pages
15h 45m
English
Content preview from WIRELESS & MOBILE DEVICE SECURITY Third Edition, 3rd Edition
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WLAN Topologies
To understand how WLAN systems work, we must consider the basic components that make up a WLAN topology. The fundamental requirement of any wireless communication system is that devices communicate over a common radio frequency. WLAN technology is no different because it requires each device in the network to communicate over a specific radio frequency within the unlicensed spectrum.
802.11 Unlicensed Bands
Wi-Fi technology that adheres to the 802.11 standard operates in several unlicensed frequency bands. The most common of these are the 2.4 GHz, 5 GHz, and the recently opened 6 GHz band. Worldwide, use of the 2.4 GHz Industrial, Scientific, and Medical (ISM) Unlicensed Spectrum is defined by the International Telecommunication ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.