Padasalai.Net’s Special – Centum Coaching Team Question Paper

CLASS : 11 Question Paper 1 MARKS : 70

SUB : COMPUTER SCIENCE TIME : 2.30 hrs

I. Choose the best answer:

15x1=15

1. In 8 bit processor, its MDR and the word in the memory have ________ bit.

a. 16 b. 8 c. 256 d. 64

2. Interactive Operating System is a ______.

a. GUI b. CUI c. UI d. OS

3. In which version of windows, DOS gaming disappear?

a. 95 b. ME c. 98 d. W2K

4. Which key display the windows desktop?

a. Winkey + E b. Winkey + D c. Winkey + C d. Winkey + T

5. Which key combination is used to delete the file or folder permanently?

a. Ctrl + Delete b. Shift + Delete c. Alt + Delete d. Ctrl+Alt + Del

6. Which of the following is not an algorithm design technique? a. Specification b. Abstraction c. Control flow d. Composition

7. Which of the following is not a programming language?

a. C b. C++ c. Ms-Office d. Python

8. Which of the following is more powerful algorithms design technique closely related to

iteration?

a. Sequential b. Iteration c. Recursion d. Composition

9. Which of the following is a valid string literal?

a. ‘A’ b. ‘Welcome’ c. 1232 d. “1232”

10. Which of the following function is with a return value and without any argument ?

a. x=display(int, int) b. x=display() c. y=display(float) d. display(int)

11. By default, the string and with which character?

a.\o b. \t c. \n d. \b

12. “Write once and use it multiple time” can be achieved by

a. redundancy b. reusability c. modification d. composition

13. void dispchar(char ch=’$’,int size=10)

{

for(int i=1;i<=size;i++)

cout<<ch;

}

How will you invoke the function dispchar() for the following input?

To print $ for 10 times

a. dispchar(); b. dispchar(ch,size);

c. dispchar($,10); d. dispchar(‘$’,10 times);

14. Distributing unwanted e-mail to others is called.

a. scam b. spam c. fraud d. spoofing

15. When a system restarts ……………….. which type of booting is used.

a. Warm booting b. Cold booting c. Touch boot d. Real boot.

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II. Answer the any 6 in the following questions : Q.No: 21 is compulsory

6x2=12

16. Converting fractional portion (.46)10 (?)2.

17. Differentiate CD and DVD.

18. How will you logoff from Ubuntu OS?

19. What is abstraction?

20. What is case analysis?

21. Evaluate the following C++ expressions where x,y,z are integers and m,n are floating

point

numbers. The value of x=5, y=4 and m=2.5.

a) n=x+y/x; b) z=(x++)*m+x;

22. Convert the following if-else to a single conditional statement:

if(x>=10)

a=m+5;

else

a=m;

23. Write the disadvantages of OOP.

24. What is a Cookie? Write its types.

III. Answer the any 6 in the following questions: Q.No: 28 is compulsory

6x3=18

25. List out different distributions of Linux operating system.

26. Define a loop invariant?

27. What is the difference between “run time error” and “syntax error”?

28. Rewrite the following code. So that it is functional:

v=5;

do;

{

total+=v;

cout<<total;

while v<=10

29. Write a note on array of strings.

30. Differentiate classes and objects.

31. What is operator overloading? Give some example pf operators which can be

overloaded.

32. What is the difference between public and private visibility mode?

33. What is e-governance?

IV. Answer the following:

34. Convert the following numbers:

5x5=25

a) 42.7658 ( ? )2

b) 521.6578 ( ? )2

c) 111.112 ( ? )8

d) 7510 ( ? )2

e) 45610 ( ? )16

OR

Explain the derived gates with expression and truth table.

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35. Explain the characteristics of Microprocessor.

OR

Explain the versions of windows operating system.

36. Explain the different ways to rename files or folders in windows?

OR

Explain the types of integer constant.

37. Write the syntax of following:

a) for b) While c) do-while d) nested…if e) nested loop

OR

Debug the error in the following program

#include <istream.h>

structPersonRec

{

charlastName[10];

chaefirstName[10];

int age;

}

PersonRecPeopleArrayType[10];

voidLoadArray(PeopleRecpeop);

void main()

{

PersonRecord people;

for (i = 0; i < 10; i++)

{

cout<<people.firstName<< ‘ ‘ <<people.lastName

<<setw(10) <<people.age;

}

}

LoadArray(PersonRecpeop)

{

for (int i = 0; i < 10; i++)

{

cout<< "Enter first name: ";

cin<<peop[i].firstName;

cout<< "Enter last name: ";

cin>>peop[i].lastName;

cout<< "Enter age: ";

cin>> people[i].age;

}

38. What are the rules for operator overloading?

OR

What are the various crimes happening using computer?

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Prepared by

M.Poovendiran.,M.Sc.,M.Phil.,B.Ed.,PG.DCA.,

PG Asst in computer science,

Paramveer Hi-Tech Matric Hr.Sec Schhol,

Pauparapatti,

Dharmapuri-636 809.

Phone No: 9524451124.

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Mr. S. Ravi kumar, B.Sc., B.Ed., Headmaster., GHS, PasmarPenta,, Vellore Dt: CellNo: 9994453649

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