SPPU Computer Engineering (Semester 3)
Operating System and Administration
May 2014
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


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 M
1 (b) What are the different functions of kernel ?
6 M

2 (a) What do you mean by user perspective of operating system ?
6 M
2 (b) Explain kernel data structure.
6 M

Answer any one question from Q3 and Q4
3 (a) What are the different file access methods ?
6 M
3 (b) Explain the concept of GRUB in detail.
6 M

4 (a) Explain with diagram Linux File Systems.
6 M
4 (b) Write short note on:
i) Bash Scripting
ii) Python Scripting
6 M

Answer any one question from Q5 and Q6
5 (a) Explain access control in UNIX OS.
6 M
5 (b) What is the difference between interrupts and exceptions?
4 M
5 (c) What is strace command?
3 M

6 (a) Explain different identities like userid, effective user id, saved user id, real user id.
6 M
6 (b) How kill command can be used with runway processes?
4 M
6 (c) Write short note on nice and renice.
3 M

Answer any one question from Q7 and Q8
7 (a) Explain concept of file system mounting.
6 M
7 (b) Explain different features of RAID 0 and RAID 1 in brief.
4 M
7 (c) What is fsck?
3 M

8 (a) What are the content of /etc./shadow file?
6 M
8 (b) Explain minimum password age, maximum password age, password inactivity period.
4 M
8 (c) Explain fdisk command.
3 M



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