Question: Consider the following I/O scenarios on a single-user PC. a. A mouse used with a graphical user interface b. A tape drive on a multitasking

Consider the following I/O scenarios on a single-user PC. a. A mouse used with a graphical user interface b. A tape drive on a multitasking operating system (assume no device preallocation is available) c. A disk drive containing user files d. A graphics card with direct bus connection, accessible through memory-mapped I/O For each of these I/O scenarios, would you design the operating system to use buffering, spooling, caching, or a combination? Would you use polled I/O, or interrupt-driven I/O? Give reasons for your choices.

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