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Windows® Small Business Server 2008: Administrator’s Pocket Consultant by Craig Zacker

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TCP/IP Basics

The third layer of the OSI reference model, the network layer, is where you first encounter the most commonly-known networking protocols: Transmission Control Protocol/Internet Protocol (TCP/IP). Sometimes known as the Internet protocol suite, TCP/IP is a collection of protocols that encompass six of the seven layers of the OSI model. The protocol that runs at the network layer, the Internet Protocol (IP), is the most important one in the suite because it carries the messages generated by most of the other protocols.

Ethernet is a LAN protocol, meaning that it is concerned only with transmitting data to other computers on the local network segment. In terms of a Windows SBS 2008 network, the computers connected to your switch, or ...

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