CBSE Class 11 Computer Science Sample Paper Set Z

1 a) What are the different functions of operating system? 

   b) How the information can be used as a data explain ? 

   c)What do you mean by unary operators 

   d) What are the different parts of CPU? Explain every part in brief. 

   e) Define System Software and what are its two main types? Give examples.

   f) What is Booting? 

   g) Which of the following are hardware and software? 

   (i) Capacitor     (ii) Internet Explorer    (iii) Hard disk     (iv) UNIX

2. Explain the following term: (Give answer any six) 

   i) Variable

   ii) Token

   iii) Array

   iv) Debugging

   v) Comment

   vi) Keyword

3 a) What is the difference b/w “while” & “do while” loop? 

   b) What are data types? What are all predefined data types in c++? 

   c) What will be the size of following constants? 

   ‘\v’,”\v”,

   d) Write the corresponding C++ expressions for the following mathematical expressions:

   i) √ (a2+b2)       (ii) (a+b)/(p+q) 

   e) Evaluate the following, where p, q are integers and r, f are floating point numbers. The value of p=8, q=4 and r=2.5

   (i) f = p * q + p/q

   (ii) r = p+q + p % q 

4 a) What is the output of the following? 

     i) # include<iostream.h>

        void main ( )

          {

              int i=0;

              cout<<i++<<” ”<<i++<<” ”<<i++<<endl;

              cout<<++i<<” ”<<++i<<” ”<<++i<<endl

          }

     ii) # include<iostream.h>

        void main( )

          {

              a=3;

              a=a+1;

              if (a>5)

              cout<<a;

               else

               cout<<(a+5);

             } 

     iii) What will be the output of the following program segment?

     If input is as:     (a) g     (b) b       (c) e      (d) p

            cin >>ch;

            switch (ch)

           { case ‘g’: cout<<”Good”;

             case ‘b’: cout<<”Bad”;

             break;

            case ‘e’: cout<<” excellent ”;

            break;

           default: cout<<” wrong choice”;

           }

     iv) Determine the output:

      for(i=20;i<=100;i+=10)

           {

              j=i/2;

              cout<<j<<””;

           }

     v) What output will be the following code fragment produce?

        void main( )

            {

                 int val, res, n=1000;

                 cin>>val;

                 res = n+val >1750 ? 400:200;

                 cout<<res;

            }

     (i) if val=2000          (ii) if val=1000              (iii) if val=500 3

5 a) Find the error from the following code segment and rewrite the corrected code underlining the correction made. 

     # include(iostream.h)

           void main ( )

              int X,Y;

              cin>>>X;

              for(Y=0,Y<10, Y++)

              if X= =Y

              cout<<Y+X;

                 else

                cout>>Y; }

   b) Convert the following code segment into switch case construct. 

        int ch;

        cin>>ch;

        If(ch = = 1)

        { cout<<“ Laptop”;

        }

       else If(ch = = 2)

       {

          cout<<“Desktop ”;

       } else if(ch= = 3)

Please refer to attached file for CBSE Class 11 Computer Science Sample Paper Set Z