Auser calls to report a problem. she is trying to install an application on a windows 7 system, but cannot. in the past, she installed applications on her windows xp system without any issues. she has always been a member of the power users group. what do you suspect is causing the installation issue?

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Suppose we have a byte addressable computer that has a 32-byte cache with 8 bytes per block. the memory address is 8 bits long. the system accesses memory addresses (in hex) in this exact order: 6e, b9, 17, e0, 4e, 4f, 50, 91, a8, ab, ad, 93, and 94. (a) assuming the cache is direct mapped, what memory addresses will be in cache block 2 after the last address has been accessed? (b) assuming the cache is direct mapped, what is the hit ratio for the entire memory reference sequence given, assuming the cache is initially empty? (c) assuming the cache is 2-way set associative with a lru replacement policy, what is the hit ratio?

Which of these is most responsible for differences between the twentieth century to the twenty-first century?