Whenever a process needs i/o to or from a disk it issues a
A) Cache request
B) Buffer request
C) System call
D) Interrupt request
Answer:
C) System call
Explanation:
When a process needs to perform I/O operations (such as reading from or writing to a disk), it issues a system call to the operating system. The operating system then manages the interaction with the disk subsystem to fulfill the I/O request.
