The time required to get the data under the reading head is: Select one: a. none O b. rotational speed c. transfer time d. seek time e. rotational latency A direct mapped cache has a hit rate of 95%, a hit time of 4 ns, and a miss penalty of 100 ns. An L2 cache isa dded with a hit time of 20ns and a hit rate of 50%, what is the new AMAT? Select one: a. none O b. 8.5 ns C. 8 ns d. 7.5 ns e. 7 ns The instructions Add R1, R2,R3 Sub R2,R7,R3 And R5, R1, R6 cause data hazards that are: Select one: a. RAW and RAW O b. WAR and WAR C. WAR and RAW d. WAW and WAW e. RAW and WAR and RAW A main memory with 16 megabytes of addressable locations and a 32 kilobyte direct mapped cache with 8 bytes per block. What is the number of block in the cache? Select one: O a. 2^21 block b. none O c. 2^11 block d. 2^22 block e. 2^12 block A direct mapped cache has a hit rate of 95%, a hit time of 4 ns, and a miss penalty of 100 ns, what is the AMAT? Select one: a. 8 ns b. none C. 9 ns O d. 10 ns e. 11 ns The floating point representation 1 01111110 100 0000 0000 0000 0000 0000 is for the decimal number: Select one: a. -0.75 O b. -7.5 c. 1.75 O d. -1.75 e. 0.75 At start of program, cache always causes miss. To solve this problem, we can Select one: a. increase cache size b. adding secondary cache O c. increase block size d. none e. increase number of blocks in cache The Decimal number +3.5 can be represented in single precision floating point by: Select one: a. 0-10000000-01000000000000000000000 b. 1-10000000-11000000000000000000000 C. 0-10000000-10000000000000000000000 O d. 0-10000000-11100000000000000000000 e. 0-10000000-11000000000000000000000 A main memory with 16 megabytes of addressable locations and a 32 kilobyte direct mapped cache with 8 bytes per block. What is the number of bits used for the tag? Select one: O a. 3 bits b. 9 bits O c. 12 bits d. none The pipelining hazard that is caused by limited resources is: olet