Fundamental Concepts in Networking

1. Network Interface Card (NIC) :

In computer networking, a NIC provides the hardware interface between a computer and a network. A NIC basically is network adapter hardware. Ethernet supports data transfer at the rate of 10 Megabits per second (Mbps). To connect Ethernet cables to a computer, we normally use a network interface card (NIC).

2. Switch :

Switch is a device used to connect the PC to network. The switch is a device which is responsible for managing bandwidth on the network. In other words, switches are actually capable of switching the data from one port directly to the other without wasting the bandwidth of the entire network attached to that switch.

3.Router :

A Router is an electronic device used to connect two or more computers or other electronic devices to each other and usually to the Internet, by wire or radio signals. This allows several computers to communicate with each other and to the Internet at the same time.