#### Revision Model Question Paper 2

11th Standard

Reg.No. :
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Computer Science

Time : 03:00:00 Hrs
Total Marks : 70

Part I

Choose the most suitable answer from the given four alternatives and write the option code with the corresponding answer.

15 x 1 = 15
1. A first generation computers used ______.

(a)

Vacuum tubes

(b)

Transistors

(c)

Integrated circuits

(d)

Microprocessors

2. The NOT operator is represented by the symbol.

(a)

over bar

(b)

single apostrophe

(c)

a and b

(d)

plus

3. The Main memory also called as ...........

(a)

ROM

(b)

RAM

(c)

Cache

(d)

EPROM

4. Which of the following Operating system are support Mobile Devices?

(a)

Windows 7

(b)

Linux

(c)

BOSS

(d)

iOS

5. Expansion of VBox is ______

(a)

Video Box

(b)

Visual Box

(c)

Vector Box

(d)

Virtual Box

6. __________________statement is used to store a value in a variable.

(a)

Assignment

(b)

Sequential control flow

(c)

Alternative control flow

(d)

Iterative

7. If C1 is false and C2 is true, the compound statement
1 if CI
2 SI
3 else
4 if C2
5 S2
6 else
7 S3
executes

(a)

S1

(b)

S2

(c)

S3

(d)

none

8. If Fibonacci number is defined recursively as$f(n)=\begin{cases} 0n=0 \\ 1n=1 \\ f(n-1)+f(n-2)otherwise \end{cases}$to evaluate F(4), how many times F() is applied?

(a)

3

(b)

4

(c)

8

(d)

9

9. Which operator is called as compile time operator?

(a)

comma

(b)

bitwise

(c)

Relational

(d)

size of

10. The set of statements that are executed again and again in iteration is called as:

(a)

condition

(b)

loop

(c)

statement

(d)

body of loop

11. Which of the following statement is (are) false?
(i) complicated programs cannot be divided
(ii) It is easier the test, debug the functions
(iii) Programmers can not work on different-functions simultaneously

(a)

only (ii)

(b)

only (iii)

(c)

both (ii) and (iii)

(d)

both (i) and (iii)

12. Which of the following statement is true or false?
(i) Object oriented programs are much smaller than other programs
(ii) Object oriented programs require a lot of work to create.
(iii) Object oriented programs are faster than other programs because of their size
(iv) Object oriented programs are easy to maintain 'and modify the existing code

(a)

i-false, ii-false, iii-true, iv-true

(b)

i-true, ii-false, iii-false, iv-true

(c)

i-false, ii-true, iii-false, iv-true

(d)

i-true, ii-true, iii-false, iv-true

13. class vehicle
{ int wheels;
public:
void input_ data(float,float);
void output_data();
protected:
int passenger;
};
class heavy_vehicle : protected vehicle {
int diesel_petrol;
protected:
protected:
public:
voidwrite_data(); };
class bus: private heavy_vehicle {
charTicket[20] ;
public:
void fetch_data(char);
voiddisplay_data(); };
};
Which is the base class ofthe class heavy_vehicle?

(a)

Bus

(b)

heavy_vehicle

(c)

Vehicle

(d)

Both (a) and (c)

14. The crime stealing tiny amounts of money from transaction is

(a)

Salami Slicing

(b)

Spyware

(c)

Malware

(d)

Spam

15. The first programming language "Ezhil" is designed by

(a)

C++

(b)

Java

(c)

Python

(d)

Visual Basic

16. Part II

Answer any 6 questions. Question no. 24 is compulsory.

6 x 2 = 12
17. What is Warm Booting?

18. What is multi-processing?

19. Name the elements of Application window.

20. Specify a function to find the minimum of two numbers.

21. What is a Pseudocode?

22. What is polymorphism?

23. Define inethods of a class and write its types

24. Which determines the functional output of cryptographic algorithm?

25. What are the familier keyboard used for Tamil typing?

26. Part III

Answer any 6 questions. Question no. 33 is compulsory.

6 x 3 = 18
27. How will you convert decimal number into Octal number?

28. Write the specification format of an algorithm for computing the square root of a number.

29. What are arithmetic operators in C++? Differentiate unary and binary arithmetic operators. Give example for each of them.

30. Differentiate break and continue statement

31. What is default arguments? Give example.

32. Write a note on 2D array declaration.

34. What is difference between the members present in the private visibility mode and the members present in the public visibility mode

35. Write a short note on ethics.

36. Part IV

5 x 5 = 25
1. How the read and write operations are performed by a processor? Explain.

2. Give the output of the following program.

1. Explain the following in detail.
(a) FIFO (b) SJF (c) Round Robin

2. Explain about parts of a loop.

1. Draw and compare the icon equivalence in windows and Ubnutu.

2. Customers are waiting in a line at a counter. The man at the counter wants to know how many customers are waiting in the line.

1. Suppose you want to solve the quadratic equation ax2 + bx + C = 0 by an algorithm. quadratic_solve (a, b, c)
-- inputs: ?
-- outputs: ?
You intend to use the formula and you are prepared to handle only real number roots. Write a suitable specification.
$x = {-b \pm \sqrt{b^2-4ac} \over 2a}$

2. Explain Refinement in detail with example.

1. Discuss the various generations of computers.

2. Convert the following Octal numbers into Binary numbers. -  472