Question

Whenever a process needs I/O to or from a disk it issues a ______________.

a) system call to the CPU
b) system call to the operating system
c) a special procedure
d) All of these

Answer 1

Processes issue a system call to the operating system for disk I/O, which manages communication with the disk hardware.

Step-by-step explanation:

When a process needs I/O (Input/Output) to or from a disk, it issues a system call to the operating system. The operating system acts as a mediator between the hardware and the processes, handling the complicated work of communicating with disk hardware. Through system calls, processes request services from the operating system, which includes reading or writing data to the disk. The operating system uses specialized routines to interact with the disk's drivers and manage the data transfer required by the process.