A NIC is a device used for:

A Network Interface Card (NIC) is specifically designed to handle signaling and communication over a network. Its primary function is to facilitate the connection of a computer or device to a network, allowing it to send and receive data packets according to networking protocols. NICs enable devices to connect to wired or wireless networks, effectively managing the data transmission aspects, such as encoding and decoding signals that travel through the network medium.

The role of a NIC is essential for establishing a reliable communication link between devices, managing the data flow with appropriate signaling methods. This capability makes it integral to the operation of local area networks (LANs) and the internet, showcasing its primary focus on enabling communication rather than on functions like data storage, power management, or file compression.