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Wireshark Revealed: Essential Skills for IT Professionals by Charit Mishra, Yoram Orzach, James H Baxter

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The layers in the TCP/IP model

The TCP/IP model comprises four layers, as shown in the following diagram. Each layer uses a different set of protocols allocated to it. Every protocol has specific designated roles, and all of them are designed in such a way that they comply with industry standards.

The layers in the TCP/IP model

The first layer is the Application Layer that directly interacts with users and other network-level protocols; it is primarily concerned with the representation of the data in an understandable format to the user. The Application layer also keeps track of user web sessions, which users are connected, and uses a set of protocols, which helps the application ...

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