CBSE Class 12 Informatics Practices Sample Paper 2012 Set 09

Section (A)

1) Answer the following questions:

a) What is the difference between Star Topology and Bus Topology of network? 

b) What is the full form of the following 

iii) FTP ii) FSF iii) GNU iv) FLOSS

c) What to you understand by Domain resolution? 

d) Why network security is an important aspect over data security 

e) Explain the following terms: 

i) Linux ii) OSS

2) (a) What is e-Learning? 

(b) What is database connectivity? 

(b) You want to develop an interface for entering your Roll_no, Name, Age and Sex (male or female). Suggest suitable front-end interface tools in NetBeans IDE. 

(c) Differentiate between front-end and back-end. 

Section (B)

3. (a) What will be the output of the following program code when the user will press JButton: 

Public class svm

{ int a;

svm(int p)

{ a=p; }

void assign(int no)

{ a=no; }

int disp()

{ return a; }

}

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt)

{

svm os=new svm(15);

System.out.println(“ “ + os.disp());

os.assign(35);

System.out.println(“ “ + os.disp());

}

(b) Rewrite the following if-else segment using switch-case statement 

char ch='A';

if(ch=='A')

System.out.println("Account");

if((ch=='C') || (ch=='G'))

System.out.println("Admin");

if(ch=='F')

System.out.println("Advisor");

(c) What is Dialog box? 1

(d) Explain the Resultset. 2

(e) In the Design Area, describe the process of setting, two components to the same width. 

(f) (i) What are the general rules of declare XML element. 

Please refer to attached file for CBSE Class 12 Informatics Practices Sample Paper 2012 Set I