Network Protocols

The A+ Certification Exams expect you to understand the major features of the four leading network protocols:

  • TCP/IP

  • NetBEUI/NetBIOS

  • IPX/SPX

  • AppleTalk

Although most current networks are based on TCP/IP, you might encounter the others in some older networks. The following sections cover the major features of these networks.

Some networks use two or more of these protocols, which makes configuration and troubleshooting more difficult.

For information about configuring these protocols, seeNetworking Configuration,” p. 791.

TCP/IP

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