1. Define cache hit and cache miss. (5 points) 2. Recall the in-class example involving cache reads of a two-dimensional array (see the code below). Assume direct mapped is used for cache mapping, the size of cache line is L, and the size of cache is C. Derive a formula for number of cache hits and cache misses while accessing A in the first and second pair of nested loops. (10 points)) double A[M] [M], x[M], y[M]; /* Initialize A and x, assign y = 0 */ /* First pair of loops */ for (i = 0; i