i want the answers for all the questions

Consider the following system with four processes (P1, P2, P3, P4), when answering the following three questions. 12. What would be the total waithug ume ror process P2 if SRTF scheduling algorithm were applied? A. 15 C. 20 B. 30 D. 35 A. Oider: 5 A. P1, P2, P3, P4 C. P4, P3, P1, P2 B. P1, P2, P4, P3 D. P1, P4, P3, P2 B. Other: 14. What would be the average waiting time if FCFS scheduling algorithm were applied? A. 17.5 C. 8.75 B. 35 D. 15 E. Onhen 15. A(n) ..... occurs when a process could run but doesn't because other processes keep getting in ahead of it. TurnaroundB.Starvation A. Turnaround C. Slecp D. Convoy effect B. Oher: 16. The short-term scheduler, or CPU scheduler, selects from among the processes that are ...non- to execute and allocates the ........ to ........ of them.? A. Waiting. CPU. all C. Waiting, memory, all B. Ready, memory, all D. Ready, CPU, one 17. One popular variation on the E. Oher: One poputar variation on the ..........model still multiplexes many user-level threads to a smaller or A. One-to-many, user-level, kernel thread C. Many-to-one, user-level, kernel thread B. Many-to-many, kernel thread, user-level D. Many-to-many, user-level, kernel thread B. Oiher: Consider a program that contains the following two threads. The thrends are ranning concurrenty, and x initial value is 0. Answer the following four questions 18. The variables i and j are allocated in A. Heap segment B. Process registers C. Data segment D. Thread registers E. Other: 19. The variable x is allocated in B. Process registers A. Heap segment C. Data segment D. Thread registers E. Other: 20. The followings are possible outputs on the screen when i=3 and J=2 except A. 12357 B. 12243 C. 13467 D. 24567 E. Other