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What is Network?

A network is a system in which two or more devices are interconnected using communication links to exchange information and share resources such as files, applications, or hardware. By enabling interaction between devices, a network allows users to communicate efficiently and access shared services.

Everyday examples of networks include email communication, instant messaging platforms, online banking systems, and even social media applications, all of which rely on networks to function seamlessly.

Components of a Network

Device: A device refers to any entity that is connected to a network and is capable of sending, receiving, or sharing data. Examples include computers, printers, mobile phones, servers, and other smart devices.
Communication link: A communication link is the channel that connects two or more devices within a network. This connection can be physical, such as copper cables or optical fiber, or wireless, such as radio waves and satellite signals.

Reasons for establishing a network:

Allows users to easily share resources such as files, applications, and hardware devices.
Ensures better performance for users while keeping costs low.
Facilitates compatibility between different software and hardware components.
Enables centralized control, management, and allocation of network resources.

Types of Networks

A computer network can transmit data by two methods-

Point-to-Point: In this method, a dedicated communication link directly connects two devices. Since no other devices share the link, the entire channel capacity is reserved for communication between those two devices.

Multipoint (Broadcast): In this method, more than two devices share a single communication link. The channel capacity is distributed among the connected devices, mean