作者aweila75 (David)
看板TransCSI
标题[问题] 95UST-CS 选择题
时间Wed Apr 25 10:00:52 2007
9. Which strategy in the following is pre-emptive?
(1)first come first serve (2)shortest job first (3)earliest deadline first
(4)first come last serve
我觉得答案是3? 1,2都不是可抢先，4不知道
12. Which of the following is not true for the JPEG compression standard.
(1)apply DCT transform (2) undergo quantization process
(3) can compress image data (4) is a lossless compression method.
根据an overview书上写的，(1)(3)(4)都有，答案应该是(2)，不过这个选项是什麽意思？
18. Which of the following mechanism is not provided by the earliest SQL(for
relational DataBase)?
(1)projection (2)recursive query (3)natural join (4)relation update
答案是(2)吗？
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1F：推 just1016:9.应该是4 (3)是不可抢 04/26 23:01
2F：推 just1016:18.是2 04/26 23:19
3F：推 just1016:(Quantization) 模式动态码流压缩, 可以高速地一次性生成 04/26 23:26
4F：→ just1016:可控画面细节的动态码流视频档案, 在较少的压缩时间代价ꐠ 04/26 23:26
5F：→ just1016:之下, 可以获得较稳定的画面细节质量。 google一下吧 04/26 23:27