Client and Server

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Client and Server 

In computer networks and applications, client and server are two important roles that work together to share information and services.

Think of the client as a library visitor and the server as the librarian. When you want a specific book or information, you ask the librarian for it. The librarian then searches through the library’s collection to find what you requested and hands it back to you. In this way, you (the client) make a request, the librarian (the server) processes it, and then delivers the information you need.



Client 

A client is a computer, application, or device that sends a request to another computer (server) to get data or perform a task.

The client starts the conversation by asking for something, such as data or a service. After sending the request, it waits for a response from the server. Typically, a client is used by a human. For example, when you click a link in a web browser, you’re interacting with the client to request a webpage.

Web Browser
Examples: Chrome, Safari
Task: Requests and displays web pages.

Mobile App
Examples: Instagram, WhatsApp
Task: Requests and shows content from a server.

Email Client
Examples: Outlook, Apple Mail
Task: Sends and receives emails.

Server

A server is a machine or software that responds to requests from other computers (clients) by sending back the information or service they need.

A server listens for requests from clients, such as web browsers or apps. It processes these requests and then sends back the necessary information or performs the requested task. Servers usually run continuously to handle multiple clients at the same time, ensuring that many users can access data or services simultaneously.

Web Server: Hosts websites and sends web pages to browsers.

Database Server: Stores and provides data to applications.

Email Server: Sends, receives, and stores email messages.

To sum up, the client and server work together to make modern technology run smoothly. The client asks for something like a web page or data and the server provides it. This setup is used in everyday things like websites, apps, and games, making it easy for people to access information and services from anywhere.


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