When a system process encounters an error, how does the Junos OS protect the other processes from being impacted?

When a system process encounters an error, how does the Junos OS protect the other processes from being impacted?

A. The Junos OS executes only one process at a time. B. Each routing protocol runs as an individual process. C. Each process operates in its own shared memory space. D. The Junos OS executes multiple processes simultaneously.