Question

1. Three threads are created by a process with pid 10. How many threads of execution are there after the creation assuming nothing has time to terminate?

2. Where are the PCBs for processes stored?

(i) In an individual process’s memory in user-space.

(ii) In a kernel data structure.

(iii) Managed by some user-space OS service.

Answer 1

Answer 1.  Threads are basically parts of a process. These parts work efficiently by dividing virtually by distributed computing concepts. Here three threads are created from a process, there it may be constant or can be customized for more and less.

Answer 2. The process control block contains some specific terms with values related to a process. The PCB stores some values in it. And, this Process Control Block must be stored in a memory location with limited privileges to a user in user-space. This should be accessible by a user easily.

In some cases, the Process Control Block is kept at the starting point of the kernel stack for security reasons.