Computer Networks Handwritten Notes for GATE

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Computer Network

A computer network is a collection of interconnected devices that are designed to communicate, share resources, and exchange information with each other. These devices can include computers, servers, routers, switches, printers, and other hardware components. The primary purpose of a computer network is to facilitate data communication and resource sharing among devices, whether they are located in close proximity or across vast distances.

Computer networks enable various forms of communication and data exchange, such as:

Data Sharing: Devices on a network can share files, documents, and other data, allowing users to access information from different locations.

Communication: Networks enable real-time communication through methods such as email, instant messaging, video conferencing, and voice calls.

Resource Sharing: Networked devices can share hardware resources like printers, scanners, and storage devices, optimizing resource utilization.

Internet Access: Networks provide access to the internet, allowing users to browse websites, access online services, and interact with remote servers.

Remote Access: Networks enable remote access to devices and systems, allowing users to control and manage resources from a different location.

Centralized Management: Networks allow administrators to centrally manage and monitor devices, user accounts, security settings, and other network-related aspects.

Computer networks can vary in size and scope, ranging from small local networks within a single building (Local Area Networks or LANs) to large-scale networks that span across cities, countries, or even the entire globe (Wide Area Networks or WANs). The most extensive and well-known example of a computer network is the internet, which connects billions of devices worldwide.

Network communication is facilitated through protocols, which are sets of rules and conventions that govern how data is transmitted, received, and processed between devices. Common networking protocols include TCP/IP (Transmission Control Protocol/Internet Protocol), Ethernet, Wi-Fi, HTTP (Hypertext Transfer Protocol), and DNS (Domain Name System).

Computer Networks Handwritten Notes for GATE

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