Which of the following on-board components is used exclusively for exchanging data with remote machines?

PCI (Peripheral Component Interconnect) is a bus for connecting internal expansion cards, not exclusively for remote data exchange.

USB (Universal Serial Bus) is an interface for connecting local peripheral devices like mice, keyboards, or external storage, not exclusively for remote data exchange.

AGP (Accelerated Graphics Port) is a dedicated bus for connecting a video card to the motherboard, not for network communication.

A NIC (Network Interface Card) is specifically designed to provide a physical connection to a network, allowing a computer to send and receive data packets with other machines on the same or remote networks. It handles the physical and data link layer aspects of network communication.