A network interface card is used to connect a computer to an Ethernet network. The card provides an interface to the media.
The network interface adapter (called network interface card, or NIC, installed in a computer's expansion slot) is the component that provides the link between a computer and the network of which it is a part. This may either by using an external transceiver or through an internal integrated transceiver mounted on the network interface card PCB. The card usually also contains the protocol control firmware and Ethernet Controller needed to support the Medium Access Control (MAC) data link protocol used by Ethernet. Every computer must have an adapter that connects to the system’s expansion bus and provides a connection to the network medium.
The network interface adapter (called network interface card, or NIC, installed in a computer's expansion slot) is the component that provides the link between a computer and the network of which it is a part. This may either by using an external transceiver or through an internal integrated transceiver mounted on the network interface card PCB. The card usually also contains the protocol control firmware and Ethernet Controller needed to support the Medium Access Control (MAC) data link protocol used by Ethernet. Every computer must have an adapter that connects to the system’s expansion bus and provides a connection to the network medium.
Functions of Network Interface Adapter:
Network interface adapters perform a variety of functions that are crucial to getting data to and from the computer over the network. These functions are as follows:
- Data encapsulation
- Signal encoding and decoding
- Data transmission and reception
- Data buffering
- Serial/parallel conversion
- Media access control
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