Chapter 10: Data-Link and Network Layer Protocols

Overview

pro*to*col n : a set of rules that governs how communication should occur

In Chapter 8, 'A Communications Framework,' you learned about the OSI model. The Data-Link layer includes the physical network hardware and transmits data onto the network. The two layers of this model that are responsible for moving data over an internetwork are the Network and Transport layers.

The Network layer of the OSI model determines the best route that a packet should take when it needs to be delivered over an internetwork. The Transport layer is primarily responsible for reliable data delivery.

At both layers, there must be protocols designed to fulfill the functions of packet delivery and reliability. Protocols are a set of rules that govern how communication should occur between upper and lower layers in addition to communicating with the other device. Without protocols, there would not be any agreed-upon format for how to handle data. This is especially a problem in a field with many technologies and thousands of manufacturers.

In this chapter, you will learn about:

  • Topologies

  • Ethernet communication architecture

  • TCP/IP

  • IPX/SPX




MCSA. MCSE 2003 JumpStart. Computer and Network Basics
MCSA/MCSE 2003 JumpStart
ISBN: 078214277X
EAN: 2147483647
Year: 2003
Pages: 203
Authors: Lisa Donald

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