9. (2 points) If a process P executes the sem_post () operation on a semaphore s: it moves to the waiting state if the integer value associated with s is 0 a process Q that was previously blocked on s will be moved to the ready state . P gets blocked bys . P decrements the value associated with S in atomic fashion 10. (2 points) "The syscall execl) creates a separate copy of the parent process address space." TRUE or FALSE? 11(2 points) "Non-cooperative context switch approach is a passive approach driven by the user-level processes." TRUE or FALSE? 2 (2 points) 'In Unix the command-line terminal (shel) is part of the operating system kernel. TRUE or FALSE? 13. (2 points) "Both the child and parent thread continue executing instructions following the APl call of pthread_create()." TRUE or FALSE? 14. (2 points) "In Unix, when a process creates a child process through the fork() system call, the parent and the child will be able to update the same address space ". TRUE or FALSE? 15. (2 points)"The race conditions pose problems for a multi-core system, they cannot occur in a single-core system". TRUE or FALSE