Contents

Foreword xxix

Chapter 1 Reviewing TCP/IP Basics 1

Introduction 2

Understanding the Purpose and Function of Networking Models .. .2 Understanding the Department of Defense (DoD) Networking Model 3

Layer One: Network Interface 4

Media Access Control 6

Network Interface Hardware/Software 6

Layer Two: Internet (or Internetworking) 7

Layer Three: Host to Host (or Transport) 7

Layer Four: Application 8

Understanding the OSI Model 8

Layer 1: Physical 9

Layer 2: Data Link 11

Layer 3: Network 13

Layer 4: Transport 14

Layer 5: Session 16

Layer 6: Presentation 17

Layer 7 Application 17

The Microsoft Model 18

Understanding the Function of Boundary Layers 19

Understanding Component Layers 21

1.1/1.3 Understanding the TCP/IP Protocol Suite 22

Layer 1: Network Interface 24

CSMA/CD 24

CSMA/CA 25

Token Passing 25

Other Access Control Methods 26

Layer 2: Internet 27

Internet Protocol 27

Internet Control Message Protocol 28

Internet Group Management Protocol 28

Address Resolution Protocol 29

Layer 3: Host-to-Host Transport 30

Transmission Control Protocol 30

User Datagram Protocol 34

Layer 4: Application 35

NetBIOS over TCP 35

Windows Internet Name Service 36

Server Message Block/Common Internet File System 37

Internet Printing Protocol 37

Windows Sockets 38

Telnet 38

Dynamic Host Configuration Protocol 39

Simple Mail Transport Protocol 40

Post Office Protocol 40

Internet Message Access Protocol 40

Hypertext Transport Protocol 41

Network News Transfer Protocol 41

File Transfer Protocol 41

Domain Naming System 42

Routing Information Protocol 43

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