2ND PUC COMPUTER SCIENCE MODEL QUESTION PAPER 4

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PU-II COMPUTER SCIENCE

MODEL QUESTION PAPER 4

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

       1. What are expansion slots?

       2. Define logic gate.

       3. What is non-linear data structure?

       4. Name the access specifier implicitly used in a class.

       5. What is dynamic memory?

       6. Define data independence.

       7. Who are hackers?

       8. Expand FTP.

       9. What is open source software?

       10. Define web scripting.

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

       11. Draw a truth table to show X+XY=X.

       12. Show that 0+X=X using properties of 0’s and 1’s.

       13. Define polymorphism with examples.

       14. What is a constructor? Give an example.

       15. Name any two member functions belonging to ofstream class.

       16. What is normalization? Mention its types.

       17. List DCL commands.

       18. Explain GPRS.

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

       19. Mention the types of motherboard.

       20. Explain NAND gate with logic diagram and truth table.

       21. Write an algorithm to delete an element from an array.

       22. What is new operator in C++? Give an example.

       23. Explain opening a file using open () member function with syntax and example.

       24. List the types of data model explain any one.

       25. What is proprietary software? Write its limitations.

       26. Write HTML program to show the use of list items.

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

       27. Using K-map, simplify the following expressions in four variables, W,X,Y,Z.

         m₁,m₃,m₅,m₇,m₉,m₁₁,m₁₃,m₁₅

       28. Write an algorithm to PUSH and POP an element from the stack.

       29. List the applications of queues.

       30. Describe the basic concepts of object oriented programming.

       31. Explain array of objects with programming example.

       32. Define inline function. List the reasons for inline function may not work some times.

       33. Explain features and disadvantages of default constructor.

       34. Describe virtual base classes and abstract classes with example.

       35. Explain any five applications of database.

       36. Describe any five comparison operators with examples.

       37. What is virus? Explain the types of viruses.