题目内容

[2012]假设某计算机按字编址，cache有4行，cache和主存之间交换的块大小为1个字。若 cache的内容初始为空，采用二路组相联映射方式和LRU替换策略。访问的主存地址依次为0、4、8、2 , 0 ,6、8、6、4、8时，命中cache的次数是______

A. 1
B. 2
C. 3
D. 4

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[2015]假定主存地址为32位，按字节编址，主存和cache之间采用直接相联块射方式，主存块大小为4个字，每个字32位，采用写回的方式，则能存放4K字数据的cache的总容量至少是______位

A. 146K
B. 147K
C. 148K
D. 158K

[2014]采用指令cache与数据cache分离的主要目的是______

A. 降低cache的缺失损失
B. 提高cache的命中率
C. 降低CPU平均访存时间
D. 减少指令流水线资源冲突

Unit 5I.Complete the sentences with the proper form of the given words.uneasy ; work; focus; party; due; wisely1.Try to find a learning method that ___ for you.2.He felt_ before the final exam.3.He is _ back soon.4.__ on for four hours at the Christmas party made him very tired.5.It is hard for him to after diving for 5 hours without a rest.6.It is important for students to use time.

II.Complete the sentences with the proper form of the given words.1.He came here __ （study)English.2.Lucy went to the train _ (meet) her friend from London.3.I hurried to Professor Wang’s house only _ (find) he was out.4.He returned home _ (get）the materials he left on the desk.5._( catch) the train, you must get up at six o’clock.6.I’m sorry _( hear) that.