2ND PUC COMPUTER SCIENCE MODEL QUESTION PAPER 3

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PU-II COMPUTER SCIENCE

MODEL QUESTION PAPER 3

I. Answer all the questions.
Each question carries 1 mark. (10 X 1 = 10)

       1. Expand the term SMPS.

       2. Draw XOR gate.

       3. Name the principle on which the stack works.

       4. What is private access specifier?

       5. Define free store.

       6. What is normalization?

       7. Define cookies.

       8. Name any two antivirus softwares.

       9. What is e-commerce?

       10. Define DHTML.

II. Answer any five of the following.
Each question carry 2 marks. (5 X 2 = 10)

       11. State and prove involution law.

       12. Draw and gate with its two variable truth table.

       13. What is an object?

       14. Define destructor with an example.

       15. Mention the types of data files.

       16. What are the advantages of ISAM?

       17. Differentiate between DROP and DELETE command.

       18. Name the types of viruses.

III. Answer any five of the following.
Each question carries 3 marks. (5 X 3 = 15)

       19. What is UPS? Explain its types.

       20. Describe NOR gate with logic diagram and truth table.

       21. Write an algorithm to insert an element in an array.

       22. Explain memory representation of pointers.

       23. Name any three functions belongs to ofstream class.

       24. What is data independence? Write its types.

       25. List any three technologies and services used in e-commerce.

       26. What is web scripting? Name any two web scripting languages.

  
IV. Answer any seven of the following.
Each carries 5 marks. (7 X 5 = 35)

       27. Using K-map, simplify the following expressions in four variables W,X,Y and Z.
              m1,m3,m5,m6,m7,m9,m11,m13.

       28. Write an algorithm to demonstrate dequeue.

       29. Demonstrate an algorithm to insert and delete an element from an array.

       30. Write the applications of object orientated programming.

       31. Describe how to define class with programming example.

       32. Write the features of friend function.

       33. What is copy constructor? Explain with programming example.

       34. Define inheritance. Explain its any two types.

       35. What is E-R Diagram? Explain its components.

       36. Explain SQL constraints with an example.

       37. Explain protection methods of network security.