Operating Systems

Compare and contrast timesharing vs multiprogramming systems. In particular, which feature requires the presence of another? In other words, if we have a multiprogramming system, does it mean that our system is also a timesharing system? Does the converse hold true (i e., is a timesharing system also a multiprogramming system)? For each of the following system calls, give a condition that causes it to fail:fork, exec, and unlink. Feel free to research failure conditions by visiting the online documentation of each system call. Naturally, you also need to describe what each system call does. What is the main advantage of the microkernel approach to system design? How do user programs and system services interact in a microkernel architecture? What are the disadvantages of using the microkernel approach