A network cable is the transmission media that transfers data from one device to another. The most commonly used network cable is the category 5 cable with RJ – 45 connector.
Routers are connecting devices and are mainly responsible for transferring data packets between various computer networks. Usually, they are used to connect a computer or an organization’s LAN to a broadband connection. They also contain RJ-45 ports so that computers or any other device can connect with them using network cables.
Repeaters, hubs, and switches connect different network devices so that they can function in unison. A repeater is a vital component that receives a signal and renews it before transmitting it back so that the signal can travel even longer distances. A hub is nothing else but a multiport repeater that has several input and/or output ports, so that input at any port is automatically available at every other port. The switch is the component that receives data from a port. It uses packet switching in order to sort out the destination device and then forwards the data to the destination, instead of broadcasting it as a hub.
A bridge, as the name itself suggests, connects two different Ethernet network segments. Its primary function is to forward packets from a source network to a destined network.
A gateway connects completely different networks that work according to different protocols. It is the entry, and also the exit point of a network. It also controls the access to other networks.
NIC is the component of a computer that connects it to any particular network. These cards are usually of 2 types: o Internal network cards o External network cards