1. One major advantage of Multiprocessor systems is increased flexibility. Briefly explain how this very advantage introduces increased complexity in the system design. 2. what is process synchronization? List the different levels of parallelism that can occur and the level of synchronization that is required at each level, with justification(s). 3. Why is symmetric multiprocessing considered better than asymmetric multiprocessing, despite its simplicity in implementation? 4. Several locking mechanisms have been implemented to achieve process synchronization. Explain any two of them.