B.E-B.E Computer Engineering UNIX ARCHITECTURE (Karunya University, Coimbatore-2012)

Reg. No. ________                                                                                                                                                   

Karunya University

(Karunya Institute of Technology and Sciences)

(Declared as Deemed to be University under Sec.3 of the UGC Act, 1956)

 

End Semester Examination – November/ December- 2012

 

Subject Title: UNIX ARCHITECTURE                                                                                                        Time: 3 hours

Subject Code:            09CS206                                                                                                                 Maximum Marks: 100          

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              

Answer ALL questions

PART – A (10 x 1 = 10 MARKS)

 

1.         State the benefit of buffer cache.

2.         What is the function of the ‘who’ command?

3.         Write the syntax of the open system call.

4.         What is the use of pipe implementation?

5.         What is the meaning of ‘zombie’ state?

6.         Mention the role of an interrupt vector.

7.         When does a page fault condition occur?

8.         State the function of ‘ioctl’.

9.         Write the task of ‘shmget’.

10.       Define sockets?

 

PART – B (5 x 3 = 15 MARKS)

 

11.       Write short notes on process context?

12.       Mention the fields of a super block.

13.       Write a short note on Signals.

14.       What are the data structures involved in demand paging?

15.       List down the system calls associated with Messages.

 

PART – C (5 x 15 = 75 MARKS)

 

16.       Draw and explain the architecture of the Unix Operating System.                           

(OR)

17.       a.         Describe about Process subsystem.                                                                                                                             (10)

            b.         Write an algorithm for reading a disk block.                                                                                                             (5)

 

18.       Explain the structure of a regular file.                                                                       

(OR)

19.       Develop an algorithm for reading a file. Discuss in detail about its working.                                                           

 
20. Elaborate on Lifetime of a process with a neat diagram.                                              

(OR)

21. Develop an algorithm for Process creation.                                                                    

 
22. Describe the algorithm for allocating space from Maps.                                               

(OR)

23. Discuss the procedure for opening a device.                                                                  

 
24. How is process synchronization done using semaphores? Explain.                               

(OR)

25. Give the syntax and meaning of any five system calls associated with sockets.           

Earning:  ₹ 5.25/-