Chapter 2. OSI Reference Model Versus Other Network Models

• Describe the layers of the Open Systems Interconnection (OSI) reference model

• Explain the relationships between the OSI Layers

• Distinguish between a network model and a network implementation

• List the OSI Layers at which the Small Computer System Interface (SCSI) bus, Ethernet, IP, and Fibre Channel (FC) operate

• Define common networking terms used to describe data units

Before delving into the details of the mainstream SCSI networking technologies, we should establish a common frame of reference. This allows accurate comparisons as we examine the details of each technology. The goal of the OSI reference model is to provide such a frame of reference.