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Q # 2 ==> Give two reasons why caches are useful. What problems do they solve? What problems do they cause? If a cache can be made as large as the device for which it is caching (for instance, a cache as large as a disk), why not make it that large and eliminate the device?Two reasons why they are useful are as follows:-  Cache is a relatively fast memory, so getting some data from cache is faster than getting it from main memory or secondary memory.  Cache are particularly usef...

Q.1 ==> What are the three main purposes of an operating system? An operating system has three main functions: (1) manage the computer's resources, such as the central processing unit, memory, disk drives, and printers (2) establish a user interface and (3) Execute and provide services for applications software. Q # 2 ==> Give two reasons why caches are useful. What problems do they solve? What problems do they cause? If a cache can be made as large as the device for which it is ...