Which type of device is an Ethernet card classified as?

An Ethernet card is classified as a network interface controller (NIC). This type of device serves as a critical link between a computer or other devices and the network. It facilitates communication over the network by converting data from the computer into a format that can be transmitted over the network media, whether wired through Ethernet cables or wirelessly.

NICs can operate at both the hardware and software levels, enabling devices to access the network and engage in data exchange. They are an essential component for enabling networking capabilities in personal computers, servers, and other devices. Understanding the role of NICs is fundamental in networks, as they are specifically designed to manage data transfer between hardware and network systems efficiently.