[問題] 95UST-CS 選擇題
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
我覺得答案是3? 1,2都不是可搶先，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.
根據an overview書上寫的，(1)(3)(4)都有，答案應該是(2)，不過這個選項是什麼意思？
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)嗎？
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