Fill in the correct answers on the lines in the answer sheet. There are 10 sub-questions in this topic, with 2 points for each sub-question, totaling 20 points.

1.Computer-System Architecture: a single processor system, ,Clustered System

2.Types of System Calls:. ,File management,Device management, Information maintenance,Communications,Protection

3. Three schedulers are in wide use:Short-term scheduler,.. ,Long-termscheduler

4. Semaphore is divided intoCounting semaphore,

5. Multiprocessor scheduling algorithmAsymmetric multiprocessing, .

6.The main ways of inter-process communication areShared memory,..

7.Disk scheduling methodFCFS,SSTF,.. ,C-SCAN,C-LOOK

8.File operations mainly includeCreate,Write , .,Re-position within file,Delete,Truncate

9.Common program threatsTrojan Horse, .,Logic Bomb,Stack and Buffer Overflow,Viruses

10. Design goals of Linux.. , efficiency, and standardization