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S 2.10 Identify the differences between public vs. private networks.

S 3.3 Identify the main characteristics of VLANs.

S 4.8 Given a scenario, predict the impact of modifying, adding, or removing network services (e.g., DHCP, DNS, WINS, etc.) on network resources and users.

ne of the most important elements of Internet technology— and the element that makes intranets so easy to set up and use—is the networking protocol that provides the foundation to the Internet. This protocol is known as TCP/IP and is actually a whole family of protocols, with its name coming from only two of them: the Transmission Control Protocol and the Internet Protocol. Before you can connect to the Internet or do anything with your intranet, you must first set up TCP/IP on the server and on all workstations.

This chapter starts by describing the TCP/IP family of protocols, continues with a description of IP addressing and address classifications, and goes on to describe several of the name-resolution services available. It concludes with a detailed discussion of how to set up and configure TCP/IP on Windows NT Workstation and Windows 98 and a brief discussion of VLAN technologies.

Introducing TCP/IP

^^ecause TCP/IP is so central to working with the Internet and with intranets, you should understand it in detail. You’ll start with some background on TCP/IP and how it came about and then move on to the descriptions of the technical goals defined by the original designers. Then you’ll get a look at how TCP/IP compares to a theoretical model, the Open Systems Interconnect (OSI) model.

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