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Internet Protocol 24 Internet Control Message Protocol 27 Internet Group Management Protocol 28 Address Resolution Protocol 29 Sockets and Application Protocols 30 NetBIOS over TCP/IP 3[r]

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I

PLANNING

1 Introduction to Networking with TCP/IP

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• MCSE Windows 2000 Accelerated Study Guide (Exam 70-240) (Book/CD-ROM package) by Tom Shinder (Editor), et al Hardcover (October 6, 2000)

• MCSE 2000 JumpStart: Computer and Network Basics by Lisa Donald, et al Paperback (April 2000)

• MCSE: Windows 2000 Network Infrastructure Administration Exam Notes by John William Jenkins, et al Paperback (September 19, 2000)

• Public Key Infrastructure Essentials: A Wiley Tech Brief - Tom Austin, et al; Paperback

• Planning for PKI: Best Practices Guide for Deploying Public Key Infrastructure - Russ Housley, Tim Polk; Hardcover

• Digital Certificates: Applied Internet Security - Jalal Feghhi, et al; Paperback

• Ipsec: The New Security Standard for the Internet, Intranets, and Virtual Private Networks - Naganand Doraswamy, Dan Harkins; Hardcover

• A Technical Guide to Ipsec Virtual Private Networks - Jim S Tiller, James S Tiller; Hardcover

• Big Book of IPsec RFCs: Internet Security Architecture - Pete Loshin (Compiler); Paperback

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OB J E C T I V E S

1

C H A P T E R

Introduction to Networking with TCP/IP

This chapter helps you prepare for the exam by cover-ing the followcover-ing Planncover-ing objective:

Given a scenario, identify valid network configurations

This is a very general objective as there are many

aspects of a valid network configuration Essentially, this objective indicates that you will need to have the background provided by the Networking Essentials exam and understand what configura-tions of TCP/IP are valid

This chapter does not cover this objective entirely,

and you will need to understand IP Addressing, subnetting, and routing to fully prepare yourself for the exam These topics are covered in subsequent chapters This chapter covers some of the technolo-gies that are used to connect networks, the basics of the TCP/IP Network Architecture, and more

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OU T L I N E

Introductory Concepts

The Components of a Network The Physical Layer The Physical Address Network Topologies The Bus Configuration The Ring Configuration 11 The Star Configuration 12

Introduction to TCP/IP 13

The TCP/IP Architectural Model 15 Transmission Control Protocol 17 User Datagram Protocol 23

Internet Protocol 24 Internet Control Message Protocol 27 Internet Group Management Protocol 28 Address Resolution Protocol 29 Sockets and Application Protocols 30 NetBIOS over TCP/IP 31 RFCs 32

Connecting Network Segments 33

Repeaters 33 Bridges 33 Routers 34

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ST U D Y ST R AT E G I E S

As you read through this chapter, you should concentrate on the following key items:

You should understand the four layers in the

TCP/IP network architecture and what function each performs

You should know which technologies are

avail-able to connect network segments together and what the key differences are among them

You should understand the need for segmenting

a network

As technology evolves at an ever-increasing pace, time and distance seem to take on new meanings for all of us Nowhere is this truer than in the computer industry, where the com-puters of today are often made obsolete by the systems that will arrive next week In the midst of this constant change, it is good sometimes to reflect on some of the technologies that have been around seemingly forever Transmission Control Protocol/Internet Protocol (TCP/IP), whose development began in 1957, is one of these technologies

When you sit at a computer today and “surf the Web,” you are connecting to servers all over the world—traveling almost instantly to remote con-tinents Or perhaps you can visit a chat room and discover that the person you have been “talking” with is halfway around the world Most people never take the time to consider the mira-cle of clicking on a link and connecting to servers all over the world, or about the steps that are involved in making this possible In this text you will discover the components that make the journey possible As we look at TCP/IP and its implementation in Microsoft Windows NT, you will learn basic concepts that apply to all forms of TCP/IP no matter who implements them

Before you can understand TCP/IP and where it fits into the networking model, you need to understand the basics This chapter will start with a review of the introductory concepts of networking

From there the chapter moves into the main components of the TCP/IP stack and what they Finally, various methods of connecting net-work segments will be reviewed

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