Please answer the 4 multiple choice questions below:

A file connection created by a thread that lives in one process (call it PID-X) can be used to manipulate the target file by a thread that lives in some other process (call it PID-Y). A parent process is allowed to enquire about the exit status of a terminated child process as many times as times as it wants to The virtual address space that an operating system provides to a process must be equal to or greater than the physical address space used by the CPU hardware. We expect that an operating system's real time scheduling algorithm may dynamically adjust the priority of a ready thread that has not had any CPU time for a long period