Thomas Maufer's A Field Guide to Wireless LANs for Administrators and Power PDF

By Thomas Maufer

ISBN-10: 0131014064

ISBN-13: 9780131014060

During this ebook, best-selling networking writer Thomas Maufer explains how instant LANs paintings, and the way to cause them to paintings for you-reliably and securely. Maufer takes you below the hood with contemporary newest WLAN applied sciences, supplying useful perception and context for deploying, dealing with, and troubleshooting WLANs in any atmosphere, from the firm to the home.Covers all major IEEE 802.11 instant criteria: 802.11a, 802.11b, 802.11g, and 802.11i/WPAShows find out how to install small, mid-sized, huge, public, enterprise, and residential networksProvides pattern Windows(R), Linux(R), and MacOS(R) configurations that assist you start quicklyDemystifies WLAN safeguard so that you can know how to guard your dataIlluminates the 802.11 protocol so that you can troubleshoot extra effectivelyPreviews tomorrow's WLAN criteria and functions for company and residential (IEEE 802.11j and 802.11n)Whether you are a network/system administrator or an influence consumer, Thomas Maufer demystifies instant LAN technology... so that you can maximize the advantages whereas minimizing the hassles.

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Extra info for A Field Guide to Wireless LANs for Administrators and Power Users

Sample text

This sidebar gives a "just the facts"-level of coverage of FHSS. 4 GHz band in a completely different way than the Barker code, which is a form of Direct Sequence Spread Spectrum (DSSS) that also achieves 1 or 2 Mbps, using either 2GFSK (two-level Gaussian Frequency Shift Keying) or 4GFSK (four-level GFSK) coding, respectively. Regardless of the speed at which it is operating, the FHSS PHY relies on a pseudo-random frequency-hopping sequence that is communicated in advance to all the FHSS STAs.

The procedures that govern the joining and leaving processes have no exact equivalent in the world of the Ethernet MAC protocol. , full- or half-duplex). However, this negotiation happens below the MAC sub-layer. 11. [ Team LiB ] [ Team LiB ] Summary We have seen that the landscape of networking standards is littered with a figurative alphabet soup of standards bodies and their output. The Data Link layer is only one of the seven layers of the OSI-RM, an abstract model of a layered protocol stack.

FHSS technology has been widely deployed in the context of other wireless communication systems, and there is a large installed base of FHSS-based systems deployed today. However, the frequency hopping variety of spread spectrum is effectively a dead-end technology insofar as WLANs are concerned. The Direct Sequence Spread Spectrum (DSSS) techniques covered in this chapter are scalable to much higher throughput rates. This sidebar gives a "just the facts"-level of coverage of FHSS. 4 GHz band in a completely different way than the Barker code, which is a form of Direct Sequence Spread Spectrum (DSSS) that also achieves 1 or 2 Mbps, using either 2GFSK (two-level Gaussian Frequency Shift Keying) or 4GFSK (four-level GFSK) coding, respectively.

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A Field Guide to Wireless LANs for Administrators and Power Users by Thomas Maufer


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