Understanding the Client-Server Model
To understand how the web works, you need to know how computers communicate using the client-server model. In this model, a client is any device or application—like a web browser, smartphone app, or even a smart TV—that requests information or services. The server is a powerful computer or program that stores website files, handles requests, and sends back the information the client asked for. The client and server work together to make web browsing possible, but they play very different roles.
The client is responsible for:
- Sending requests for information or services;
- Displaying the information it receives from the server;
- Interacting with the user and sending new requests as needed.
The server is responsible for:
- Receiving and processing client requests;
- Locating the correct files or data;
- Sending the appropriate response back to the client.
Whenever you use your browser to visit a website, you are acting as the client, and the website's computer is acting as the server.
index.html
When you type a website address into your browser and hit Enter, the process begins with the client (your browser) sending a request to the server. The server receives this request, finds the right files (like HTML, CSS, or images), and sends a response back to the client. Your browser then displays the website using this response. Looking at the diagram above, you can see how the arrows represent the flow of information: the request arrow points from the client to the server, and the response arrow points back from the server to the client. This back-and-forth forms the foundation of every web interaction.
You can think of the client-server model like ordering food at a restaurant. You, the customer, are like the client: you decide what you want and place your order. The server in this analogy is the kitchen, which receives your order, prepares the food, and sends it back to you. The menu is like the list of available services or data, and the waiter is like the network that carries messages between you and the kitchen. Just as you do not cook the food yourself, the client does not create the website content—it simply requests and displays what the server provides.
1. According to the client-server model described, what is the main role of the client?
2. In the restaurant analogy, what does the server represent in web communication?
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To understand how the web works, you need to know how computers communicate using the client-server model. In this model, a client is any device or application—like a web browser, smartphone app, or even a smart TV—that requests information or services. The server is a powerful computer or program that stores website files, handles requests, and sends back the information the client asked for. The client and server work together to make web browsing possible, but they play very different roles.
The client is responsible for:
- Sending requests for information or services;
- Displaying the information it receives from the server;
- Interacting with the user and sending new requests as needed.
The server is responsible for:
- Receiving and processing client requests;
- Locating the correct files or data;
- Sending the appropriate response back to the client.
Whenever you use your browser to visit a website, you are acting as the client, and the website's computer is acting as the server.
index.html
When you type a website address into your browser and hit Enter, the process begins with the client (your browser) sending a request to the server. The server receives this request, finds the right files (like HTML, CSS, or images), and sends a response back to the client. Your browser then displays the website using this response. Looking at the diagram above, you can see how the arrows represent the flow of information: the request arrow points from the client to the server, and the response arrow points back from the server to the client. This back-and-forth forms the foundation of every web interaction.
You can think of the client-server model like ordering food at a restaurant. You, the customer, are like the client: you decide what you want and place your order. The server in this analogy is the kitchen, which receives your order, prepares the food, and sends it back to you. The menu is like the list of available services or data, and the waiter is like the network that carries messages between you and the kitchen. Just as you do not cook the food yourself, the client does not create the website content—it simply requests and displays what the server provides.
1. According to the client-server model described, what is the main role of the client?
2. In the restaurant analogy, what does the server represent in web communication?
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