Which of the following is NOT a type of network interface?

Network interfaces are crucial for connecting devices to a network, allowing them to communicate with each other. The correct answer identifies USB as not being a type of network interface.

A Network Interface Controller (NIC) is a hardware component that allows a computer or device to connect to a network. It can facilitate both wired and wireless connections, thus playing a key role in network communications.

Wi-Fi refers to wireless networking technology that allows for the connection of devices without physical cables, typically utilizing radio waves. It is a specific way of connecting to a network, characteristic of how wireless connectivity operates.

Ethernet represents a widely-used networking technology for local area networks (LANs) that provides a protocol for data transmission over wired connections.

On the other hand, USB (Universal Serial Bus) is primarily a standard for communication between devices and computers. While USB can be used to connect network interfaces (like USB network adapters) to a computer, it is not a type of network interface itself. USB acts more like a connection standard rather than a method of network communication, hence it is not categorized as a network interface like the others.