Process & Threads

One or more correct

• AThreads can only be implemented in kernel space
• BEach thread has its own file descriptor table for open files
• CAll the threads belonging to a process share a common stack
• DThreads belonging to a process are by default not protected from each other

One or more correct

• ARunning to Ready
• BWaiting to Running
• CReady to Waiting
• DRunning to Terminated

int x = 3;
while(x > 0) {
  fork();
  printf("hello");
  wait(NULL);
  x--;
}

Numerical answer

One or more correct

• AP makes a blocking system call to read a block of data from the disk
• BP tries to access a page that is in the swap space, triggering a page fault
• CAn interrupt is raised by the disk to deliver data requested by some other process
• DA timer interrupt is raised by the hardware