CBSE Class 11 Computer Science Sample Paper Set Z

Read and download PDF of CBSE Class 11 Computer Science Sample Paper Set Z designed as per the latest curriculum and examination pattern for Class 11 issued by CBSE, NCERT and KVS. The latest Class 11 Computer Science Sample Papers have been provided with solutions so that the students can solve these practice papers and then compare their answers. This will help them to identify mistakes and improvement areas in Computer Science Standard 11 which they need to study more to get better marks in Grade 11 exams. After solving these guess papers also refer to solved Class 11 Computer Science Question Papers available on our website to build strong understanding of the subject

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? 


   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( )




              if (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”;


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


           default: cout<<” wrong choice”;


     iv) Determine the output:






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

        void main( )


                 int val, res, n=1000;


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



     (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;


              for(Y=0,Y<10, Y++)

              if X= =Y



                cout>>Y; }

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

        int 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



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