6) What are the benefits and the disadvantages of each of the following? Consider both the system level and he rograminer or nd asynchronous communication a. Synchronous and asynchronous communication b. Automatic and explicit buffering c. Send by copy and send by reference d. Fixed-sized and variable-sized messages(20 points) 7) Explain the role of the init process on UNIX and Linux systems in regard to process termination. (10 points)