第一章 单元测试

1、单选题:
Most flat panel monitors use CRTs to display images.( )
选项:
A:对
B:错
答案: 【

2、单选题:
Active matrices allow monitors to display HD images.( )
选项:
A:错
B:对
答案: 【

3、单选题:
Multiple bitmaps come together to create a single image.( )
选项:
A:对
B:错
答案: 【

4、单选题:
A lower capacity than DVDs is not a benefit of CDs.( )
选项:
A:对
B:错
答案: 【

5、单选题:
The first troubleshooting step of overheating is to disconnect the fan from the motherboard.( )
选项:
A:对
B:错
答案: 【

6、单选题:
The advantage of synchronous buses is that they are highly efficient.( )
选项:
A:错
B:对
答案: 【

7、单选题:
A ____ is a computer designed for individual use. ( )
选项:
A:PC
B:computer cluster
C:laptop
D:tablet
答案: 【PC

8、单选题:
A ____ is a portable computer with a flat touch screen. ( )
选项:
A:tablet
B:PC
C:computer cluster
D:laptop
答案: 【tablet

9、单选题:
A ____ is a portable, folding computer. ( )
选项:
A:computer cluster
B:tablet
C:laptop
D:PC
答案: 【laptop

10、单选题:
A ____ is a computer intended to be used in a single place. ( )
选项:
A:tablet
B:desktop
C:PC
D:laptop
答案: 【desktop

11、单选题:
A ____ is a computer that can process large amounts of data. ( )
选项:
A:desktop
B:computer cluster
C:laptop
D:tablet
答案: 【computer cluster

12、单选题:
An ____ is a computer that is part of a larger product. ( )
选项:
A:computer cluster
B:embedded computer
C:PC
D:tablet
答案: 【embedded computer

13、单选题:
People can control tablet PCs by touching the ____ . ( )
选项:
A:flat-panel
B:CRT
C:pixel
D:screen
答案: 【screen

14、单选题:
A ____ is an icon on a computer’s display controlled by a mouse. ( )
选项:
A:pointer
B:GUI
C:button
D:keyboard
答案: 【pointer

15、单选题:
An ____ is an input device that uses a ball to track its movement. ( )
选项:
A:button
B:keyboard
C:electromechanical mouse
D:pointer
答案: 【electromechanical mouse

第二章 单元测试

1、单选题:
A tag identifies the valid bit as current or not current.( )
选项:
A:对
B:错
答案: 【

2、单选题:
Cache misses are increased when a programmer uses a split cache setup.( )
选项:
A:错
B:对
答案: 【

3、单选题:
In a write-back, the cache and memory are updated at the same time.( )
选项:
A:错
B:对
答案: 【

4、单选题:
Programmers can minimize page faults by implementing LRU replacement.( )
选项:
A:错
B:对
答案: 【

5、单选题:
It is NOT true that RAID configuration is an efficient alternative to striping.( )
选项:
A:错
B:对
答案: 【

6、单选题:
The reason of mirroring is so expensive is that it requires a duplicate disk for every data disk.( )
选项:
A:对
B:错
答案: 【

7、单选题:
SRAM has replaced DRAM as the standard primary memory unit.( )
选项:
A:错
B:对
答案: 【

8、单选题:
Solid-state devices are gaining popularity over magnetic discs for secondary memory.( )
选项:
A:对
B:错
答案: 【

9、单选题:
A ____ is a situation in which the requested data is present in the cache. ( )
选项:
A:block
B:hit rate
C:miss penalty
D:hit
答案: 【hit

10、单选题:
A ____ is the smallest unit of data that can exist in a level of memory. ( )
选项:
A:block
B:principle of locality
C:miss penalty
D:reference
答案: 【block

11、单选题:
A ____ is the extra time required to retrieve data from lower levels of memory. ( )
选项:
A:principle of locality
B:block
C:memory hierarchy
D:miss penalty
答案: 【miss penalty

12、单选题:
A ____ is a system for organizing memory into multiple tiers. ( )
选项:
A:memory hierarchy
B:miss rate
C:hit rate
D:reference
答案: 【memory hierarchy

13、单选题:
A ____ is the percentage of memory accesses found in the cache. ( )
选项:
A:hit rate
B:block
C:reference
D:miss rate
答案: 【hit rate

14、单选题:
A ____ is the percentage of memory accesses not found in the cache. ( )
选项:
A:hit rate
B:miss rate
C:reference
D:principle of locality
答案: 【miss rate

15、单选题:
A ____ is a marker that identifies the contents of a block. ( )
选项:
A:fully associative cache
B:split cache
C:direct-mapped cache
D:tag
答案: 【tag

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