Day 30

TCP/IP Layer Functions

Key Topics

Today we spend some time on the layers of the TCP/IP model, reviewing how each layer operates. We pay particular attention to the transport layer and its three protocols: Transmission Control Protocol (TCP), User Datagram Protocol (UDP), and Quick UDP Internet Connections (QUIC).

The TCP/IP Application Layer

The application layer of the TCP/IP model provides an interface between software such as a web browser and the network itself. The process of requesting and receiving a web page works like this:

  1. An HTTP request is sent, including an instruction ...

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