Chapter 4. OSI Model and Network Protocols

Objectives

2.2 Identify the seven layers of the OSI (Open Systems Interconnect) model and their functions

2.3 Identify the OSI (Open Systems Interconnect) layers at which the following network components operate:

• Hubs

• Switches

• Bridges

• Routers

• NICs (Network Interface Card)

• WAPs (wireless access point)

2.4 Differentiate between the following network protocols in terms of routing, addressing schemes, interoperability, and naming conventions:

• IPX/SPX (Internetwork Packet Exchange/Sequence Packet Exchange)

• NetBEUI (Network Basic Input/Output System Extended User Interface)

• AppleTalk/AppleTalk over IP (Internet Protocol)

• TCP/IP (Transmission Control Protocol/Internet Protocol)

What you need to know

• Identify the seven layers of the OSI model

• Identify the function of each of the layers in the OSI model

• Identify the layer at which networking devices function

• Identify the various common protocol suites used with networks

• Understand the basic characteristics of common protocol suites