By Thomas Maufer
An directors advisor to developing and coping with a instant LAN. It covers: speeds and feeds (802.11b vs 11a vs 11g) and configuring an 802.11 NIC (network details centre) in a home windows and Linux atmosphere.
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Additional resources for A Field Guide to Wireless LANs for Administrators and Power Users
The latter are formally created by organizations that are specifically chartered with producing them, and often have the force of law or treaties behind them.   In the context of this chapter, the standards we discuss are generally the de jure variety. " The group still exists. The portion of the CCITT that standardized networking protocols and conducted related activities has been relocated to the International Telecommunications Union, Telecommunications Standardization Sector (abbreviated: ITU-T), which is a component of the United Nations.
25). Figure 2-1 shows the complete seven-layer protocol stack defined by the OSI-RM.  A device that implements a Physical layer protocol is frequently referred to verbally and written shorthand, namely as a "PHY" device. Figure 2-1. OSI Reference Model In most cases, a layer has well-defined interfaces that are used to either accept data from higher layers, or to indicate the presence of data to a higher layer. Typically, there are also control interfaces between the layers that allow a higher layer to configure a lower layer according to administrative preferences, operating conditions, and so forth.
Layers 2 through 6 (the middle layers) have a common characteristic, in that they perform a service (or set of services) for the layer above, and expect a service (or set of services) from the layer below. In other words, they are simultaneously "clients" of the layer below, while they offer "services" to the layer above. The reason that layer 1 and layer 7 are different is that they have no layer below or no layer above, respectively. Therefore, layer 1 only provides service(s) to layer 2 because layer 1 is at the bottom of the protocol stack, and there is no lower layer; similarly, due to its position at the top of the protocol stack, layer 7 only uses services offered by layer 6.