Which of the following is/are true about process states? Select 4 correct answer(s) The process state "SWAPPED OUT AND BLOCKED" is assigned to a process that is currently blocked and not in main memory A non-terminated child process whose parent process has terminated is referred to as an orphan Hardware interruptions are the only cause for process state changes A zombie process has terminated, but still has an entry in the process table A parent process may terminate the execution of its children processes using the 'kill' command

A semaphore currently has the value 3. A process that attempts to subtract 4 from this semaphore will:   options: A continue without waiting, producing a value of -1 for the semaphore B continue without waiting, producing a value of 0 for the semaphore C wait until the value of the semaphore has become at least 4 because some other process(es) increased the semaphore's value D wait until the value of the semaphore becomes exactly 4 because some other process(es) increased the semaphore's value

83. A state is safe, if : a. the system does not crash due to deadlock occurrence b. the system can allocate resources to each process in some order and still avoid a deadlock c. the state keeps the system protected and safe d. all of the mentioned

101. A deadlock can be broken by : a. abort one or more processes to break the circular wait b. abort all the process in the system c. preempt all resources from all processes d. none of the mentioned