University of Mumbai 2006 B.A Economics Computer Systems and Applications - Question Paper

Computer Systems and Applications
october 2006
Time: three HoursMarks: 100
NB:
Attempt either Part A or Part B. ques. no. one is compulsory.
In part I, attempt any 2 ques. from ques. Nos. two to five
In part 11, attempt any 2 ques. from ques. Nos. six to nine
All ans should be written in the identical answer-book.
Figures to right indicate maximum marks.
All ques. carry equal marks
PART A
Q.1 (a) ans the subsequent in 1 sentence: three

(i) What is the use of MODEM?
(ii) provide 1 advantage of CD-ROM over floppy disk.
(iii) provide full form of HTML.
(b) ans the subsequent in C:
(i) What is the difference ranging from getche () and getch ()? two
(ii) What is the difference ranging from = and = =operators? two
(iii) What is the use of break statement? one
(c) State whether the subsequent are actual or false: - three

(i) WAN is an operating system.
(ii) In MS-WORD, PAGE BREAK can be inserted using Edit menu.
((iii) In MS-WORD, Save As choice allows you to save the file under various file name.
(d) ans the subsequent in FoxPro:
(i) discuss the use of: three
(i) SUBSTR ( ) (ii) CDOW (iii) MIN ( )
(ii) discuss the following: two
(i) EDIT (ii) replace STRUCTURE.
part —1
Q.2 (a) discuss briefly about the following: six
(i) KEYBOARD (ii) LAN (iii) TELNET.
(b) What does the subsequent C program print? four
main () {int a=356;
float b = 2121.4656;
char c[] "DIGITAL";
printf("%+6d% + ll.3f\n%-10.4s\n",a,b,c);
printf("%-6d%11.0f%10.5s\n",a,b,c); }

(c) Write a C prcgram to input 20 integers and then print these integers in ascending order of magnitude and then in descending order magnitude. six

Q.3 (a) ans in 1 or 2 lines the uses of: six
(i) FLOPPY DISK (ii) OPERATING SYSTEM (iii) TCP/IP protocol.
(b) Rewrite the subsequent sequence of if() statements using switch(). four

If (a= = 'r' ll a= ='R')) printf (" \nRED\n") ;
else if(a= ='w' a= ='W') printf("\nWHITE\n");
else if (a= ='b' ll a= ='B' ) printf("\nBLUE\n");
else printf("\nNONE OF THEM\n");

(c) Write a program in C to input 10 pairs of x and y and then print regression line y on x in the form six
Q.4 (a) State whether the subsequent are actual or False: six

Earning:   Approval pending.