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(a) (4%) A process is said to be CPU/memory/IO-bound if its performance bottleneck is at CPU/memory/IO. When you use a browser to search something from Google, is the corresponding process CPU-, memory-, or IO-bound? Explain you answer. (b) (2%) in a multiprogramming computer, a process may be context-switched for causes such as expiration of time slices, 10 requests, hardware errors, etc. Explain what cause of context switches that an OS may use to determine whether a process is CPU-bound