Which of the following is not classified as a peripheral device?

A Network Interface Card (NIC) is integrated into a computer's architecture and is not typically categorized as a peripheral device. Peripheral devices are external components that provide input and output functions for a computer system. Examples include printers, which output data, scanners, which input data, and keyboards, which serve as input devices.

In contrast, a NIC is usually permanently installed inside the computer, allowing for network connectivity. It plays a crucial role in enabling communication over networks, including connecting to the internet. The distinction lies in the fact that peripherals can be easily added or removed from the computer, while the NIC is a core component vital for the system’s networking capabilities.