What is a SWITCH ? A network Switch is a networking device that connects devices together, these devices could be, computers, printers, other switches, routers or even firewalls and servers.. It uses a technique that is called packet switching to receive, process and forward data to the destination Unlike less advanced network HUBS a network switch forwards data only to one or multiple devices that need to receive it, rather than broadcasting the data out of each of its interfaces. A network switch contains multiple ports and is considered as a network bridge that uses Hardware addresses or MAC addresses, to process and forward data at the link layer from layer 2 of the OSI model Some switches can also process data at the network layer which is LAYER 3, and that happens by additionally incorporating routing functionality that most commonly uses IP address to perform packet forwarding. This kind of switches is known as LAYER 3 switches. A Switch is a device that...
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