ITGSS Certified Technology Specialist

How is multitasking appropriately explained in computing?

1. Processes are executed one at a time.

2. The CPU processing time is allocated to several processes in turn.

3. Only one process can run at a time.

4. Each process is given equal time slots simultaneously.

The correct answer is: The CPU processing time is allocated to several processes in turn.

Multitasking in computing refers to the ability of a computer's operating system to manage multiple processes concurrently by allocating CPU time efficiently. The correct explanation, which states that the CPU processing time is allocated to several processes in turn, captures the essence of multitasking. In a multitasking environment, the CPU does not work on all processes at the same time; instead, it switches between them rapidly, giving each process a small time slice of execution. This approach allows users to run multiple applications simultaneously without noticeable delay, as the rapid context switching creates an illusion of concurrent execution. For instance, when a user is running a web browser, a word processor, and a music player, the operating system allocates CPU resources to each of these applications in quick succession. This management ensures that while one application may not be executing at a given moment, it is still responsive and available when the CPU allocates time back to it. Understanding this concept is critical for professionals in technology, as it highlights the efficiency of resource management in modern operating systems and the underlying principles of responsive computing.