操作系统选择题·一

1. When one thread immediately terminates the target thread, it is called ____________

   A. asynchronous cancellation      B. systematic cancellation

   C. sudden Termination         D. deferred cancellation

   
   答案：A

2. Operating system goals are to:

   A. execute user programs and make solving user problems easier

   B. make the computer system convenient to use

   C. use the computer hardware in an efficient manner

   D. All of the above

   
   答案：D

3. Which is built directly on the hardware?

   A. Computer Environment       B. Application Software

   C. Operating System          D. Database System

   
   答案：C

4. Which of the following Operating System does not implement multitasking truly?

   A. Windows 98    B. Windows NT    C. Windows XP    D. MS DOS

   
   答案：D

5. Which is not the function of the Operating System?

   A. Virus Protection            B. Application management

   C. Memory management       D. Disk management

   
   答案：A

6. How does the software trigger an interrupt?

   A. Sending signals to CPU through bus

   B. Executing a special operation called system call

   C. Executing a special program called system program

   D. Executing a special program called interrupt trigger program

   
   答案：B

7. An interrupt vector

   A. is an address that is indexed to an interrupt handler

   B. is a unique device number that is indexed by an address

   C. is a unique identity given to an interrupt

   D. none of the mentioned

   
   答案：A

8. To access the services of operating system, the interface is provided by the ___________

   A. System calls     B. API     C. Library     D. Assembly instructions

   
   答案：A

9. What is the main function of the command interpreter?

   A. to get and execute the next user-specified command

   B. to provide the interface between the API and application program

   C. to handle the files in operating system

   D. none of the mentioned

   
   答案：A

10. What is inter-process communication?

    A. communication within the process

    B. communication between two processes

    C. communication between two threads of same process

    D. none of the mentioned

    
    答案：B

11. A process stack does not contain __________

    A. Function parameters        B. Local variables

    C. Return addresses       D. PID of child process

    
    答案：D

12. Which system call returns the process identifier of a terminated child?

    A. wait     B.exit     C. fork     D. get

    
    答案：A

13. A Process Control Block(

    答案：C