7. a) Write down the physical forms available for establishing an interconnection network. b) Explain in detail about crossbar switching, Multistage switching network and hypercube system. [3M] 8. a) Explain how to resolve multiple contentions in shared resources. [9M] [3M] b) Illustrate serial and parallel arbitration produces in a shared multiprocessor environment. [9M] [12M] 9. Explain inter processor communication and synchronization in a shared multiprocessor environment. 10. a) Implement a simple pipeline unit for floating addition and subtraction. b) With examples, Explain four segment CPU pipeline and Timing of instruction pipeline. [6M] [6M]