Anna University Trichy 2010-7th Sem B.E Computer Science and Engineering /B.Tech ,EMR/EMR ,CS1005 UNIX INTERNALS(Regulation 2007) - Question Paper

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B.E/B.Tech.DEGREE EXAMINATION,NOVEMBER/DECEMBER 2010
7th SEMSESTER
COMPUTER SCIENCE AND ENGINEERING
CS1005 UNIX INTERNALS
(REGULATION 2007)

Time:Three hours Maximum:100 marks

ans ALL ques.
PART A-(10*2=20 marks)
1.What is uarea?

2.What is the use of buffer cache?

3.What should happen if the kernel attempts to awaken all processes sleeping on an event,but no processes are asleep on the event at the time of wakeup?

4.What are signals?

5.What is close system call?

6.What is the use FORK system call?

7.What are special files?

8.What is the use of shell?

9.What are streams?

10.What is character device switch table?

PART B-(5*16=80 marks)

11. (a) List out the reasons for popularity of unix os.
(b) discuss the architecture of Unix. [Marks 6+10]

or
12. (a) discuss about file sub system.
(b) discuss about kernel data structures. [Marks 6+10)

13. (a) discuss about the Organization of buffer header. [Marks 8]
(b) explain about algorithms for studying and writing disk blocks.[Marks 8]

or
14. (a) discuss how byte offset is converted to block numbers in the file system.
(b) Write a note on superblock [Marks 12+4]

15. Write short notes on
(a). Pipes [Marks 8]
(b) STAT and FSTAT. [Marks 8]

or

16. (a) explain about file and record locking [Marks 8]
(b) discuss about DUP system call. [Marks 8]

17. (a) discuss about process situation. [Marks 8]
(b) Write notes on process creation. [Marks 8]

0r
18. (a) discuss about attachreg algorithm. [Marks 8]
(b) explain about system boot and init process. [Marks 8]

19. (a) discuss about swapping in detail [Marks 8]
(b) explain about fair share scheduler. [Marks 8]
or

20. (a) discuss demand paging in detail. [Marks 8]
(b) explain in detail about driver interfaces. [Marks 8]

Earning:   Approval pending.