Download PDF by Thomas Maufer: A Field Guide to Wireless LANs for Administrators and Power

By Thomas Maufer

ISBN-10: 0131014064

ISBN-13: 9780131014060

During this e-book, 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 ultra-modern newest WLAN applied sciences, providing sensible perception and context for deploying, dealing with, and troubleshooting WLANs in any surroundings, from the firm to the home.Covers all top IEEE 802.11 instant criteria: 802.11a, 802.11b, 802.11g, and 802.11i/WPAShows easy methods to set up small, mid-sized, huge, public, enterprise, and residential networksProvides pattern Windows(R), Linux(R), and MacOS(R) configurations that assist you start quicklyDemystifies WLAN safety 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 purposes for enterprise and residential (IEEE 802.11j and 802.11n)Whether you are a network/system administrator or an influence person, 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

In order to accommodate certain Data Link layers that do not provide reliable transport, higher layer protocols may provide their own forms of error recovery mechanisms. a. Project 802) is now in its third decade of operation, and has made substantial contributions to the Physical and Data Link layers, defining over a half-dozen MAC sub-layer protocols, and specifying the associated PHYs over which these MAC sub-layer protocols operate. 11. As conceived by the OSI-RM, the Data Link layer is responsible for enabling long frames (up to thousands or tens of thousands of bits) to be received intact across an unreliable Physical layer.

Logically, the interaction is as if the peers were communicating directly, a fiction that is achieved through the presence of the lower layers. Figure 2-3 shows the logical (horizontal) and physical (vertical) operation of the layered protocol model. Figure 2-3. 11, we must examine the context in which the Data Link layer is located. The Data Link layer is also referred to as "layer 2" of the OSI-RM, which is an abstract representation of a protocol stack that divides the job of sending and receiving data over a network into layers, each with its own well-defined function(s).

Actually, Token Bus is a hybrid technology, since although it is physically a bus, it is logically a ring. 5. " [14] For an excellent reference on FDDI, the reader is referred to Gary Kessler's 1992 book, entitled Metropolitan Area Networks: Concepts, Standards, and Services. The IEEE LMSC's partitioning of the Data Link layer allows the LLC sub-layer to be independent of the details of the Physical layer, with a standardized interface to the MAC sub-layer. The MAC sub-layer protocol is typically paired with at least one type of Physical layer medium (many MAC sub-layer protocols can operate over more than one type of Physical layer medium).

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


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