Consider the interrupt that occurs at the completion of a disk transfer?

When a disk transfer completes, an interrupt is generated to signal the CPU that the data is ready for processing. This interrupt allows the CPU to stop its current activities and handle the data transfer efficiently, ensuring that the system can respond to I/O operations promptly. It enhances overall performance by allowing the CPU to perform other tasks while waiting for data to be read or written, rather than polling the disk continuously. This mechanism is essential for effective multitasking and resource management in operating systems.