Which statement describes what a multi-tasking operating system does for processes?

Which statement describes what a multi-tasking operating system does for processes?

• A. It makes it appear as if tasks run at the same time.
• B. It increases processor speed.
• C. It reduces memory usage.
• D. It arranges files in a folder.

Answer: (A)

A multitasking operating system splits the CPU’s time among several processes and switches between them quickly, so it seems like multiple tasks are running at the same time. This is done through scheduling and context switching, giving each process a short time slice in turn. It doesn’t make the processor faster, it simply shares its time. It also doesn’t reduce memory usage or organize files in a folder. So the best description is that it creates the illusion of concurrent execution by rapidly switching between tasks.

A multitasking operating system splits the CPU’s time among several processes and switches between them quickly, so it seems like multiple tasks are running at the same time. This is done through scheduling and context switching, giving each process a short time slice in turn. It doesn’t make the processor faster, it simply shares its time. It also doesn’t reduce memory usage or organize files in a folder. So the best description is that it creates the illusion of concurrent execution by rapidly switching between tasks.