Hour 3. The Network Access Layer

What You’ll Learn in This Hour:

At the base of the TCP/IP protocol stack is the Network Access layer, the collection of services and specifications that provide and manage access to the network hardware. In this hour you learn about the duties of the Network Access layer and how the Network Access layer relates to the OSI model. This hour also takes a close look at the network technology known as ethernet.

At the completion of this hour, you’ll be able to

  • Explain the Network Access layer

  • Discuss how TCP/IP’s Network Access layer relates to the OSI networking model

  • Describe the purpose of a network architecture

  • List the contents of an ethernet frame

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