Reasons for Process Suspension:
Swapping parent process:
- When the operating system needs to free up memory resources, it may decide to swap out a parent process. This means that the process is moved from main memory to secondary storage (such as a hard disk) temporarily.
- Swapping allows the operating system to prioritize active processes and allocate resources efficiently.
Inter request:
- Process suspension can occur when a process needs to wait for an external event or resource before it can continue executing.
- For example, if a process is waiting for user input or waiting for a file to be read from the disk, it may be temporarily suspended until the requested input or data becomes available.
Timing:
- Timing can also be a reason for process suspension. This occurs when a process is scheduled to be suspended for a specific period of time, allowing other processes to execute during that time frame.
- Timing-based suspensions are often used in multitasking operating systems to ensure fair allocation of resources among different processes.
All of the above:
- The correct answer to the question is "d. All of the above" because all of the mentioned reasons (swapping parent process, inter request, and timing) can lead to process suspension.
In summary, process suspension can occur due to various reasons such as the need for memory management (swapping parent process), waiting for external events or resources (inter request), and timing-based scheduling. All of these reasons contribute to the efficient allocation of resources and fair execution of processes in an operating system.