Explain the concept of process isolation in an operating system and its significance.

Process isolation is a mechanism of the operating system that ensures the independence and security of different programs (processes) execution. Each process operates in its own memory space and cannot directly access the memory or resources of another process without special permissions.

The significance of isolation:

• Security: prevents unauthorized access and influence of one process on another.
• Stability: a failure in one process does not cause the entire system to crash.
• Resource management: the OS can efficiently allocate memory, CPU time, and other resources among processes.

For example, if you have several applications running, isolation guarantees that an error in one of them will not affect the operation of others.