What is a NIC:
A network interface card (NIC) is a device that plugs into a motherboard and provides ports for the network cable connections.
It is the computer interface with the LAN.
The NIC communicates with the network through serial connections and communicates with the computer through parallel connections.
Assign IP Address
In a (TCP/IP)-based LAN, PCs use an IP address to identify each other.
These addresses allow computers that are attached to the network to locate each other.
IP addresses for hosts on a LAN can be assigned in two ways:
Manually assigned by the network administrator
Assigned by a Dynamic Host Configuration Protocol (DHCP) server
