A __________ is a software mechanism that informs a process of the occurrence of asynchronous events.
A) signal
B) message
C) mailbox
D) kernel

Question

Quizplus · Accepted Answer

A signal is a software mechanism used to inform a process of an asynchronous event. It interrupts a process and requests it to handle the event. Signals can be sent by the kernel, another process or even generated by the process itself. Messages and mailboxes are also used for communication between processes but do not necessarily involve signaling. The kernel is the core component of the operating system responsible for managing system resources.

A __________ Is a Software Mechanism That Informs a Process