C 5 points Assume that the cache is a write through write allocating cache that

C 5 points assume that the cache is a write through

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C.(5 points) Assume that the cache is a write-through, write-allocating cache that uses prefetching. Below are several memory accesses that might be performed. Each reads or writes a single byte. For each memory access, find the tag, set index, and block offset, indicate whether it is a hit, and give the number of memory reads and writes caused by the access. If the read is a cache hit, give the value it returns. (For each operation, assume the cache is in the state depicted above.)D.(5 points) If you wanted to improve the performance of a program on a system that uses a cache, what could you do even if you don’t know any details about the cache?AccessTagSetOffsetHitReadsWritesValueR 0303R 1FEBR 14FDW 1000W 06ABof 1517
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6. Extra Credit A.(3 points) Spell three English words using the hex digits A–F and write their values in octal. (For example, BAD16= 56758.)B.(3 points) Why is it recommended for you to use AddressSanitizer?C.(3 points) Describe a programming error you made on one of the projects, how you diagnosed it, and how you corrected it. of 16 17
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D.(6 points) A pennantis a data structure consisting of nrows, numbered 0 to nwhere row icontains 2i+1 elements, numbered ito i. An n-row pennant contains n2elements (since the sum of the first nodd numbers is n2). A pennant may be represented as a 1-dimensional array containing each row in order. (That is, containing (0,0), (1,1), (1,0), (1,1), (2,2), ….) Write a function that returns a pointer to element R,Cof an n-row pennant. You may assume that |C| R< int *lookup(int *P, int R, int C) {of 17 1, n . 17
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