Sample Paper of Computer Science 2014 for class 11, CBSE. Paper No.2

Sample Paper – 2014

Class – XI

Subject – Computer Science

[Operating systems, programming methodology, Fundamentals of C ++,  I/O in C++, Operators & Expression, Control Statements]

1. What is an operating system? Give few o/s available. 1
2. What is a compiler? 1
3. What is a file? 1
4. Define a Process. 1
5. What is FIFO? 1
6. Define lexical. List few with examples. 1
7. Name three types of debugging errors. 1
8. Who developed the C ++ Programming language? 1
9. List any four internal Dos commands. 1
10. What is a class? Give one example. 1 

11. What is the difference between ‘x’ and “x” in c++? 2
12. What are Variables? Give examples using data types. 2
13. What is the difference between int and float data type? 2
14. What are the uses of these punctuators { } , ; [ ] ? 2
15. Define a stream and insertion operator in C++. 2
16. What is # include directive? What happens if iostream.h

      is not included in a program ?                                                                      2

17. What will be the output of the following program? 2

            # include <iostream.h>

            int i=20;

            void main()

{

            int i=7;

            cout<< i<< “ “ << : : I << endl;

}

18. How will you include comments in c++? How many types of

      comments are there in c++ language?                                                       2

19. What are Unary and Binary operators? Give example 2
20. What is the difference between num=10; and num==10;?

     What is an assignment operator?                                                                2

21. Write a program to enter marks in three subjects and calculate

    total and assign grade ‘A’ if total is > =200 else assign  grade ‘B’ .       3

22. What are the sequence, iteration & Selection construct in c++? What are the purpose of loops in c++ ?                                                     3

23. What is difference between logical & syntax errors? Give their examples                                                                                         3

24. What is the difference between return ( ) and exit ( ) statement? 3
25. What is the difference between break and continue statement? 3
26. Write a program to find factorial of a number using While loop. 4
27. Find the syntax errors, if any in the following: 4

            main()

{

            int r w =90;

            while(w>60);

            {

            r=w-50;

            switch(w)

{

            20: cout<< “lower range” <<endl

            30: cout<<” middle range”<< endl;

}

}

28. Describe switch statements .What is the difference between if

     and switch statements.                                                                                    4

29. Write a for loop which will produce the following output. 4

            1

            2 2

            3 3 3

            4 4 4 4

            5 5 5 5 5

30. a) . Explain local and global identifiers in a c++ program. 3
31. b) . What is a logical operator? Give examples. 2
32. a) . Define arrays and pointers with simple exression. 2
33. b) . Define the terms Polymorphism & Inheritance. 2

Paper Submiited By:

Name Arundhati

Email  arunalokesh30@gmail.com