#### Chapters

Chapter 2: Number Systems

Chapter 3: Computer Organization

Chapter 4: Theoretical Concepts of Operating System

Chapter 5: Working with Windows Operating System

▶ Chapter 6: Specification and Abstraction

Chapter 7: Composition and Decomposition

Chapter 8: Iteration and recursion

Chapter 9: Introduction to C++

Chapter 10: Flow of Control

Chapter 11: Functions

Chapter 12: Arrays and Structures

Chapter 13: Introducton to Object Oriented Programming Techniques

Chapter 14: Classes and objects

Chapter 15: Polymorphism

Chapter 16: Inheritance

Chapter 17: Computer Ethics and Cyber Security

Chapter 18: Tamil Computing

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## Solutions for Chapter 6: Specification and Abstraction

Below listed, you can find solutions for Chapter 6 of Tamil Nadu Board of Secondary Education Tamil Nadu Board Samacheer Kalvi for Class 11th Computer Science Answers Guide.

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - A [Pages 85 - 86]

#### Choose the correct answer

Which of the following activities is algorithmic in nature?

Assemble a bicycle.

Describe a bicycle.

Label the parts of a bicycle.

Explain how a bicycle works.

Which of the following activities is not algorithmic in nature?

Multiply two numbers.

Draw a kolam.

Walk in the park.

Swapping of two numbers.

Omitting details inessential to the task and representing only the essential features of the task is known as ______

specification

abstraction

composition

decomposition

Stating the input property and the input-output relation a problem is known ______

specification

statement

algorithm

definition

Ensuring the input-output relation is ______

the responsibility of the algorithm and the right of the user.

the responsibility of the user and the right of the algorithm.

the responsibility of the algorithm but not the right of the user.

the responsibility of both the user and the algorithm.

If i = 5 before the assignment i := i - 1 after the assignment, the value of i is ______

5

4

3

2

If 0 < i before the assignment i := i - 1 after the assignment, we can conclude that ______

0 < i

0 ≤ i

i = 0

0 ≥ i

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - B [Page 86]

#### Very Short Answers

Define an algorithm.

Distinguish between an algorithm and a process.

Initially, farmer, goat, grass, wolf = L, L, L, L, and the farmer crosses the river with a goat. Model the action with an assignment statement.

Specify a function to find the minimum of two numbers.

If `sqrt2` = 1.414, and the square_root() function returns -1.414, does it violate the following specification?

-- square_root (x)

-- inputs: x is a real number , x ≥ 0

-- outputs: y is a real number such that y^{2} = x

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - C [Page 86]

#### Short Answers

When do you say that a problem is algorithmic in nature?

What is the format of the specification of an algorithm?

What is abstraction?

How is the state represented in algorithms?

What is the form and meaning of the assignment statement?

What is the difference between the assignment operator and the equality operator?

### Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide Chapter 6 Specification and Abstraction Evaluation - Section - D [Page 87]

#### Explain in detail

Write the specification of an algorithm hypotenuse whose inputs are the lengths of the two shorter sides of a right-angled triangle, and the output is the length of the third side.

Suppose you want to solve the quadratic equation ax^{2} + 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 ± sqrt(b^2) - 4ac)/(2a)`

Exchange the contents: Given two glasses marked A and B. Glass A is full of apple drink and glass B is full of grape drink. For exchanging the contents of glasses A and B, represent the state by suitable variables, and write the specification of the algorithm.

## Solutions for Chapter 6: Specification and Abstraction

## Tamil Nadu Board Samacheer Kalvi solutions for Class 11th Computer Science Answers Guide chapter 6 - Specification and Abstraction

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Concepts covered in Class 11th Computer Science Answers Guide chapter 6 Specification and Abstraction are Algorithms, Algorithmic Problems, Building Blocks of Algorithms, Algorithm Design Techniques, Specification, Abstraction.

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