What does multitasking allow in an OS?

What does multitasking allow in an OS?

• A. Execution of multiple independent computer programs
• B. Single-threaded execution
• C. Delayed processing
• D. Reduced battery consumption

Answer: (A)

Multitasking lets the operating system run several programs by giving each one a slice of CPU time and switching between them rapidly. This scheduling and context switching let you work on multiple applications as if they’re running at the same time, even on a single-core CPU. On systems with multiple cores, some tasks can truly run in parallel, but the core idea is sharing the CPU among different programs so you can switch between them smoothly. That’s why the correct choice is about executing multiple independent programs. The other ideas don’t fit: single-threaded execution means one thread at a time, not multiple tasks; delayed processing isn’t what multitasking aims for; and reduced battery consumption isn’t the defining outcome of multitasking (power management strategies exist, but they’re separate considerations).

Multitasking lets the operating system run several programs by giving each one a slice of CPU time and switching between them rapidly. This scheduling and context switching let you work on multiple applications as if they’re running at the same time, even on a single-core CPU. On systems with multiple cores, some tasks can truly run in parallel, but the core idea is sharing the CPU among different programs so you can switch between them smoothly.

That’s why the correct choice is about executing multiple independent programs. The other ideas don’t fit: single-threaded execution means one thread at a time, not multiple tasks; delayed processing isn’t what multitasking aims for; and reduced battery consumption isn’t the defining outcome of multitasking (power management strategies exist, but they’re separate considerations).