Please help me with the following 5 questions based on Operating Systems:

Question 1 20 pts Semaphores can be used for: Mutual exclusion General waiting for another thread to do something O Both O Neither Question 2 20 pts To be used for mutual exclusion, a semaphore should be initialized to: 0 O 1 ON, where N is the number of threads that will be trying to access the shared data structure or resource Question 3 20 pts To use a semaphore for mutual exclusion, a thread should place a V() operation at the start of the critical section and a P() operation at the end of the critical section. True O False Question 4 20 pts Semaphores, like condition variables, are memoryless. True a o False Question 5 20 pts A P() operation on any semaphore will cause the calling thread to be blocked and placed on a waiting queue until a V() operation can be executed by another thread in order to unblock it. True False