Foundations Of Computing: From Hardware Essentials To Web Design GXEST203 2024 Scheme - Dr Binu V P

What is a Client-Server Network? A client-server network is a type of network architecture where multiple devices (clients) communicate with a central device (the server) to access resources or services. Think of it like a library system where the server is the library, and the clients are the people who come to borrow books. In this setup, the client is any device (like a computer, smartphone, or tablet) that requests information or services, and the server is the powerful computer that provides the resources, such as files, data, or applications. How Does It Work? Client Request: A client sends a request to the server. For example, when you open a website on your computer, your web browser (the client) requests the website data from a web server. Server Response: The server processes the request, retrieves the necessary data or performs the required task, and sends a response back to the client. For example, the web server sends the requested website content to your browser. Con...

Web Server: Web server is a program which processes the network requests of the users and serves them with files that create web pages. This exchange takes place using Hypertext Transfer Protocol (HTTP). Basically, web servers are computers used to store HTTP files which makes a website and when a client requests a certain website, it delivers the requested website to the client. For example, you want to open Facebook on your laptop and enter the URL in the search bar of google. Now, the laptop will send an HTTP request to view the facebook webpage to another computer known as the webserver. This computer (webserver) contains all the files (usually in HTTP format) which make up the website like text, images, gif files, etc. After processing the request, the webserver will send the requested website-related files to your computer and then you can reach the website. Different websites can be stored on the same or different web servers but that doesn’t affect the actual website that you a...

Network topology refers to the arrangement of various elements (links, nodes, etc.) in a computer network. Understanding these layouts helps us optimize network performance, fault tolerance, and scalability. There are several key network topologies, each with unique features, advantages, and disadvantages. Here’s an overview: 1.  Bus Topology Description : In a bus topology, all devices are connected to a single central cable, known as the "bus." This cable acts as the shared communication medium. Pros : Simple to set up and expand. Requires less cable compared to other topologies. Cons : Limited cable length and number of nodes. Performance decreases as more devices connect. Troubleshooting can be difficult, and a fault in the main cable halts the entire network. Use Cases : Small, temporary networks and early LAN setups. 2.  Ring Topology Description : In ring topology, each device connects to exactly two others, forming a circular pathway for signals. Data travels in one d...

The World Wide Web (WWW) is like a massive library of information that you can explore using the internet. Imagine millions of web pages filled with text, images, videos, and other content—all connected like a giant spider web. These web pages are stored on servers worldwide and can be accessed from any device, like a computer or smartphone, through a web browser (like Chrome or Safari). The World Wide Web (WWW) is a system that allows users to access and share information over the internet: How it works The WWW is based on hypertext, which uses hyperlinks to connect documents and other resources. Users can click on hyperlinks to access information in different formats, such as text, images, audio, and video. How it's used The WWW is the primary way to access internet resources. It provides access to a wide range of content, including mass media, through the surface web, deep web, and dark web. How it was created British scientist Tim Berners-Lee invented the WWW in 1989 while work...

The Internet is a massive, interconnected network that allows computers and other devices worldwide to communicate with each other. It’s like a giant web connecting billions of devices, enabling them to share information, communicate, and access online resources. Key Points: Global Network : The Internet links networks from all around the world, connecting personal computers, smartphones, servers, and many other devices. Communication Platform : It allows people to send messages, make video calls, and share files, enabling instant communication regardless of distance. Information Sharing : Users can browse websites, search for information, watch videos, and access educational materials. Uses Protocols : The Internet relies on specific rules called protocols (like TCP/IP) to ensure data is transmitted accurately across different networks. 1960s – The Beginnings : The Internet's roots trace back to the ARPANET , a project by the U.S. Department of Defense. The goal was to create a ne...