CBSE Class 12 Informatics Practices Question Paper 2016 Delhi

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CBSE Class 12 Informatics Practices Question Paper 2016 Students can download the last year question papers using the link below. Free download of examination question papers with solutions. Last 10 year question papers should be practised to get better marks in examinations.

Informatics

1. (a) Two doctors have connected their mobile phones to transfer a picture file of a person suffering from a skin disease. What type of network is formed ? Which communication media out of Coaxial cable, Optical fiber, Bluetooth, Satellite link should be used to transfer the file ? 

(b) State reason why Star topology requires more cable length than Bus topology. 

(c) “Open Source Software developers work for the good of community”. Is this statement true ? Give reason. 

(d) What happens during ‘Domain Name Resolution’ ? 

(e) How is ‘Denial of service’ attack, a threat to Network security ? 

2. (a) Identify the odd one out of the following statements. State reason for your choice. 

(i) switch

(ii) do while

(iii) while

b) What is the difference between setVisible() and setEnabled() methods ? 

(c) What is the difference between the following statements (i) and (ii). 

(i) a=5;

(ii) if(a = = 5)

       x=3;

(d) Write the output in jTextField1 if depcode is 3. 

switch (depcode)

{

case 1 :

allowance=4000;

break;

case 2 :

allowance=3200;

break;

default :

allowance=1000;

}

jTextFieldl.setText( " " +allowance);

(e) Sandhya is creating a webpage. She is entering HTML code on her computer. In between, she keeps pressing ‘Refresh’ / ‘Reload’ button on her browser. What is the purpose ? 

(f) What does ‘XML’ stand for ? How is the purpose of HTML different from XML ? 

(g) Write Java code (statements) to declare Y as integer variable. Then, assign the value 30 to a variable Y. Increase the value of Y by 5 and store the increased value in Z. 

3. (a) What is MySQL ? 

(b) Charvi is inserting “Sharma” in the “LastName” column of the “Emp” table but an error is being displayed. Write the correct SQL statement. 1

INSERT INTO Emp(‘Sharma’)VALUES(LastName) ;

Please click below link CBSE Class 12 Informatics Practices Question Paper 2016.

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