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11th Computer Science Monthly Test -1 ( Specification and Abstraction )

MABS Institution

11th Computer Science Monthly Test -1 ( Specification and Abstraction )-Aug 2020

Time : 2.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Identify the function name: square (A + B) _________.

A
B
A+B
square

which one of the following is the comment line in algorithm?

+ +
1 1
- -
= =

Computational processes in the real world have

behaviour
Statements
state
procedure

Which serves as a contract between the designer and users of the algorithm?

Abstraction
Specification
Composition
Decomposition

which one of the following is the assignment operator?

=
= =
+ = =
+ +

Which must be expressed using statements of a programming language?

Process
Instructions
algorithms
Specification

Which of the following statement is used to alter the normal flow of control?

Sequential control flow
Alternative control flow
Iterative control flow
all of these

Each part of an algorithm are known as

variables
functions
control flow
data

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

0 < i
0 \(\le \) i
i = 0
0 \(\ge \)i

The data stored in a varibale is also called a_________________

process
data
value
constant

Part - B

Generic 2 - Answer All Question

What is an Algorithm?

What is an Abstraction?

Define variable.

Distinguish between an algorithm and a process
Mention the three different types of Chameleons.

If \(\sqrt{2}\) = 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 y2=x

What is a state?

Define control flow.

What are the basic principles and techniques for designing Algorithms.

Define an algorithm.

Part - C

Generic 3 - Answer All Question

What is abstraction?

Write a note on the parts of specification of an algorithm.

Name the basic principles and techniques for designing algorithms

Write the goal of the algorithm.

What is the use of abstraction?
What is the form and meaning of assignment statement?

What should we know while designing algorithm.

Define state of an algorithm

Define the input-output relationship between the designer and user of the algorithm.

What does specification of an algorithm consists.

Part - D

Generic 5 - Answer All Question

Explain the three control flow statement.

Explain the specification format.

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.

Explain building blocks of algorithm

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.

Explain in detail how will you construct an algorithm. Whatever with in ( )

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.
\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)
What are the values of variables m and n after the assignments in line (1) and line (3)?

Explain Algorithm Design Techniques.

Explain the Basic Building Blocks of Algorithms.

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