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 * @Github: https://github.com/Certseeds/CS302_OS
 * @Organization: SUSTech
 * @Author: nanoseeds
 * @Date: 2020-08-23 16:51:11
 * @LastEditors: nanoseeds
 * @LastEditTime: 2020-08-23 17:41:38
 * @License: CC-BY-NC-SA_V4_0 or any later version 
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1. Student ID will be fill as \*\*\*\*\*\*\*\*
2. True or False judge

+ a: False;
+ b: True
+ c: False
    - Increasing the size of cache will increasing hit rate and cost of every lost.
+ d: True
+ e: True
+ f: True
+ g: False
+ h: False
+ i: True
+ j: False
+ k: false,Fat32's max file-size is 4GB.
+ l: false, file's size is limited.
+ m: True. Really do not know.
+ n: True
+ o: True.
+ p: False random
+ q: True. do not know
+ r: Fasle random choose
+ s: False
+ t: True
+ u: True
+ v: False
+ w: True
+ x: False

3. Fill in the blanks

+ a: system call
+ b: RR
+ c: time slice?
+ d: MMU
+ e: continued and can not be divided
+ f: half of the
+ g::
    - i: inode. path, folder file
    - ii: folders, inodes, files and files's metadata
+ h: REdo logs. I guess they must do those done logs and throw failed logs.
+ i: dispatch example: process schedule and memory page schedule.
+ j: we suppose x files can go the disk, so x*10+(1-x)*1 <=2, which makes x <= 1/9. so maximum can take 1/9 files.
+ k: buffer cache will decrease the cost time.
+ l: do not know
+ m: tcp四步分手.
+ n: 序列化和反序列化.
+ o: should build HTTPS connection.

4. ignore.
5. multi-threaded process

+ a:[.]
+ b: ignore
+ c,d,e; both,both,both.

6. ignore
7. ignore
8. ignore
9. 