Chapter 10. Application Layer

Applications, such as HTTP, video streaming, online gaming, and chat, provide the human interface to the underlying network. They enable us to send and receive data with relative ease. In this chapter, we review the role of the application layer.

Application Layer Protocols

By now, you should be familiar with both the OSI and TCP/IP models. The TCP/IP application layer includes a number of protocols that provide specific functionality to a variety of end-user applications.

OSI and TCP/IP Model Comparison

To review the structure of the OSI and TCP/IP models, label Figure 10-1 with the layers for each model.

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