Operating System and Administration - May 2014

Computer Engineering (Semester 3)

TOTAL MARKS: 100
TOTAL TIME: 3 HOURS (1) Question 1 is compulsory.
(2) Attempt any four from the remaining questions.
(3) Assume data wherever required.
(4) Figures to the right indicate full marks.

Answer any one question from Q1 and Q2

1 (a) What is shell ? What are the different types of commands in shell ? Give some examples.(6 marks) 1 (b) What are the different functions of kernel ?(6 marks) 2 (a) What do you mean by user perspective of operating system ?(6 marks) 2 (b) Explain kernel data structure.(6 marks)

Answer any one question from Q3 and Q4

3 (a) What are the different file access methods ?(6 marks) 3 (b) Explain the concept of GRUB in detail.(6 marks) 4 (a) Explain with diagram Linux File Systems.(6 marks) 4 (b) Write short note on:
i) Bash Scripting
ii) Python Scripting(6 marks)

Answer any one question from Q5 and Q6

5 (a) Explain access control in UNIX OS.(6 marks) 5 (b) What is the difference between interrupts and exceptions?(4 marks) 5 (c) What is strace command?(3 marks) 6 (a) Explain different identities like userid, effective user id, saved user id, real user id.(6 marks) 6 (b) How kill command can be used with runway processes?(4 marks) 6 (c) Write short note on nice and renice.(3 marks)

Answer any one question from Q7 and Q8

7 (a) Explain concept of file system mounting.(6 marks) 7 (b) Explain different features of RAID 0 and RAID 1 in brief.(4 marks) 7 (c) What is fsck?(3 marks) 8 (a) What are the content of /etc./shadow file?(6 marks) 8 (b) Explain minimum password age, maximum password age, password inactivity period.(4 marks) 8 (c) Explain fdisk command.(3 marks)