QUESTION 13 Which hardware mechanism cannot be used to enforce Mutual Exclusion: O A. Compare & Swap instruction O B. Disable Interrupt O C. Exchange instruction O D. Enable Interrupt QUESTION 14 Select the incorrect statement about the difference between Monitor and Semaphore. O A. Once a Monitor is correctly programmed, access to the protected resource is correct from all processes. OB. Once Semaphores are correctly programmed, resource access for all processes is correct. O C. The monitor itself enforces mutual exclusion. OD. In the case of Semaphore, both mutual exclusion and synchronization are the responsibility of the programmer. QUESTION 15 Select the necessary and sufficient condition(s) for deadlock. O A. Mutual Exclusion OB. Hold-and-Wait O C. No Pre-emption O D. Circular Wait O E. All of above QUESTION 16