Chapter 2. The Open Systems Interconnection Specifications
THE FOLLOWING COMPTIA NETWORK+ EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:
4.1 Explain the function of each layer of the OSI model
Layer 1 – physical
Layer 2 – data link
Layer 3 – network
Layer 4 – transport
Layer 5 – session
Layer 6 – presentation
Layer 7 – application
Because this book is centering upon all things Network+, it's crucial for you to understand the OSI model as CompTIA sees it, so I'll present each of its seven layers in that light.
I'll finish this chapter with an introduction to encapsulation. Encapsulation is the process of encoding data as it goes down the OSI stack.
Note
To find ...
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