subject : computer architecture

No explanation needed , only correct answer

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. 9 ns b. 10 ns c. 11 ns d. none e. 8 ns The pipelining hazard that is caused by limited resources is: Select one: a. structural hazard b. Architecture hazard C. data hazard d. branch hazard e. Organization hazard At start of program, cache always causes miss. To solve this problem, we can Select one: a. adding secondary cache b. none c. increase number of blocks in cache d. increase block size O e. increase cache size The time required to get the data under the reading head is: Select one: O a. rotational latency O b. rotational speed O c. transfer time d. none e. seek time 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. 7.5 ns O C. 8 ns O d. 7 ns e. 8.5 ns The floating point representation 1 01111110 100 0000 0000 0000 0000 0000 is for the decimal number: Select one: O a. -7.5 O b. -1.75 O c. 1.75 O d. -0.75 e. 0.75 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: a. 2^12 block b. none O c. 2^21 block d. 2^22 block e. 2^11 block 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. 9 bits O b. none c. 3 bits d. 12 bits The Decimal number +3.5 can be represented in single precision floating point by: Select one: a. 0-10000000-11000000000000000000000 b. 1-10000000-11000000000000000000000 C. 0-10000000-01000000000000000000000 d. 0-10000000-10000000000000000000000 e. 0-10000000-11100000000000000000000 The instructions Add R1, R2,R3 Sub R2,R7,R3 And R5, R1,R6 cause data hazards that are: Select one: a. RAW and WAR and RAW b. RAW and RAW O C. WAW and WAW d. WAR and WAR e. WAR and RAW