Final answer:
The different layers of the internet, namely the physical layer, data link layer, network layer, and application layer, play specific roles when you click on a link. The physical layer establishes the connection, the data link layer ensures reliable transfer, the network layer routes the data, and the application layer manages the communication between applications.
Step-by-step explanation:
Layers of the Internet
When you click on a link, the different layers of the internet play a role in establishing the connection and transferring data.
Physical Layer
The physical layer is responsible for establishing the physical connection to the internet. It involves the physical infrastructure such as cables, routers, and modems that enable the transmission of data.
Data Link Layer
The data link layer ensures reliable data transfer over the local network. This layer handles tasks such as error detection and correction, framing, and flow control.
Network Layer
The network layer manages the routing of data between networks. It determines the most efficient path for the data to reach its destination by using routing protocols.
Application Layer
The application layer manages communication between software applications. It allows different applications to interact with each other by providing services such as file transfer, email, web browsing, and more.
So, when you go to a link, the physical layer establishes the connection, the data link layer ensures reliable transfer, the network layer routes the data, and the application layer manages the communication between applications.