CBSE Class 12 Informatics Practices Sample Paper 2013 Set B

1. a) Mr. Ram is interested in transferring songs from his mobile to Mr. Shyam’s mobile. Suggest two suitable wireless options he may use for doing the same. 

b) Neha wants to upload/download files from/to a remote internet server.Write the name of the relevant communication protocol, which will let her do the same.

c) It is technology on computer networks whose purpose is to prevent unwanted networking connection according to some filtering/blocking rules. What is it? 

d) Which of the following are open standards? 

(1) .OGG (2) .DOC (3) .TTF (4) . JPEG

e) What is DOS(Denial of Service) ? Explain briefly. 

f) Differentiate between Dedicated and Non-dedicated server. 

g) List out any four advantages of Open Standards. 

2. (a) Which property of jLabel box is used to specify the image during design time? 

(b) Which statement is used to terminate the loop before its maturity? 

(c) Which HTML tag and corresponding attributes are used to establish default font size for entire page? 

(d) What is the difference between <UL> and <OL> tag? 

(e) What will be the value of a and b after execution of the following code: 

int a=1,b=2;

if( + + b <5)

{

a* = b;

}

(f) Write a function in java that takes cost price and selling price of a good as input and returns 1 if the shop keeper made profit and 0 if he had made loss.

(g) Write some features of XML. 

3. a) If a database “ Employee” exists, which MySql command help you to start working in that database. 

b) Mr. Ganesh wants to give moderation of 5 marks to all students those have below 35 mark. Name the command for this purpose. 

c) Correct the following SQL command.

SELECT stdname FROM STUDENT WHERE stdname IS ‘*A%

d) What are important transaction properties?

Please refer to attached file for CBSE Class 12 Informatics Practices Sample Paper 2013 Set B