第二章单元测试
- A tag identifies the valid bit as current or not current.（ ）
- Cache misses are increased when a programmer uses a split cache setup.（ ）
- In a write-back, the cache and memory are updated at the same time.（ ）
- Programmers can minimize page faults by implementing LRU replacement.（ ）
- It is NOT true that RAID configuration is an efficient alternative to striping.（ ）
- The reason of mirroring is so expensive is that it requires a duplicate disk for every data disk.（ ）
- SRAM has replaced DRAM as the standard primary memory unit.（ ）
- Solid-state devices are gaining popularity over magnetic discs for secondary memory.（ ）
- A ____ is a situation in which the requested data is present in the cache. （ ）
- A ____ is the smallest unit of data that can exist in a level of memory. （ ）
- A ____ is the extra time required to retrieve data from lower levels of memory. （ ）
- A ____ is a system for organizing memory into multiple tiers. （ ）
- A ____ is the percentage of memory accesses found in the cache. （ ）
- A ____ is the percentage of memory accesses not found in the cache. （ ）
- A ____ is a marker that identifies the contents of a block. （ ）
A:对 B:错
答案:错
A:对 B:错
答案:对
A:对 B:错
答案:错
A:错 B:对
答案:对
A:对 B:错
答案:对
A:错 B:对
答案:对
A:错 B:对
答案:错
A:对 B:错
答案:对
A:miss penalty B:hit C:block D:hit rate
答案:hit
A:principle of locality B:reference C:miss penalty D:block
答案:block
A:memory hierarchy B:principle of locality C:miss penalty D:block
答案:miss penalty
A:hit rate B:miss rate C:reference D:memory hierarchy
答案:memory hierarchy
A:reference B:block C:miss rate D:hit rate
答案:hit rate
A:reference B:miss rate C:hit rate D:principle of locality
答案:miss rate
A:direct-mapped cache B:tag C:fully associative cache D:split cache
答案:tag
温馨提示支付 ￥3.00 元后可查看付费内容,请先翻页预览!
