IT networking is the practice of connecting multiple computing devices together so they can exchange data, share resources, and communicate with each other . It forms the invisible digital backbone of our world, powering everything from your home Wi-Fi to corporate cloud environments and the global internet. Core Components of a Network To understand how an IT network operates, it helps to look at its fundamental building blocks: Nodes (End Devices) : Any physical device connected to the network that sends or receives information. Examples include laptops, smartphones, servers, printers, and IoT devices like smart TVs. Links (Transmission Media) : The channels used to connect the nodes together. These can be wired (like Ethernet and copper cables or high-speed fiber optics) or wireless (like Wi-Fi, Bluetooth, and cellular signals). Network Devices : Specialized hardware that directs traffic across the network. Switches : Connect multiple devices together within the same local network....
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