Saurastra University 2006 B.Sc Information Technology Operating System & Unix - Question Paper

B. Sc. (I.T.) (Sem. III) exam
March / April – 2006
Operating System & Unix
Time : three Hours]
[Total Marks : 100

1
Attempt any 6 : 30

(i)
describe operating system ? discuss functions of operatingsystem in detail.
(ii)
discuss virtual memory using paging.
(iii) Process state transition diagram.
(iv) discuss memory allocation.
(v)
File attributes.
(vi) I/O devices.
(vii) discuss process management.
2
Attempt any 4 : 20

(i)
Unix file system.
(ii)
Features of unix operating system.
(iii) What is vi editor ? discuss various modes of vi editor.
(iv) discuss I/O redirection and piping with example.
(v) discuss file security in unix.
(vi) Functions of system administrator.
3 Attempt : (any 15) 30
(i) Is
(iv) du
(vii) touch
(ii) chmod
(v) ps
(viii) sort
(iii)
(vi)
(ix)
umask
kill
cut
(x) dd (xi) write (xii) file
(xiii) uucp
(xvi) rmdir.
(xiv) telnet (xv) doscp
4 Attempt any 4 : 20

(i) Write a shell script which takes p,r,n from the user andcalculate simple interest and print it on the screen.
SD-1960]
1
[Contd..


(ii)
discuss decision-making statements in shell with example.
(iii) discuss positional parameters in detail.
(iv) Write a shell script, which takes name of file and print no.
of lines, no. of words, no. of characters in the file and changefile permission to 654.
(v)
Take name of 2 files as argument and sort that file inreverse order and display on screen. Check whether twofiles are same, if identical delete 2nd file.
SD-1960]
2
[ 100
]

Earning:   Approval pending.