Q15

MSQ1 mark

Consider a process $\text{P}$ running on a $\text{CPU}$ . Which one or more of the following events will always trigger a context switch by the $\text{OS}$ that results in process $\mathrm{P}$ moving to a non-running state (e.g., ready, blocked)?

(A)

$\text{P}$ makes a blocking system call to read a block of data from the disk

(B)

$\text{P}$ tries to access a page that is in the swap space, triggering a page fault

(C)

An interrupt is raised by the disk to deliver data requested by some other process

(D)

A timer interrupt is raised by the hardware

Loading…