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12th Computer Science Weekly Test - 1 ( Data Abstraction )

St. Britto Hr. Sec. School - Madurai

12th Computer Science Weekly Test - 1 ( Data Abstraction )-Aug 2020

Time : 1.30 Hours

Part - A

Multiple Choice Question - Answer All Question

Which of the following provides modularity?

Datatypes
Objects
Classes
Abstraction

Which of the following is a compound structure?

Pair
Triplet
single
quadrat

Color= ('red', 'green', 'blue') is an example of

Dictionary
List
Set
Tuple

Which of the following is a powerful concept that allows programmers to treat codes as objects?

Encapsulation
Data Abstraction
Inheritance
Polymorphism

The data structure which is a mutable ordered sequence of elements is called

Built in
List
Tuple
Derived data

How many ways are there to represent pair datatype?

2
4
3
5

Which of the following is constructed by placing expressions within square brackets?

Tuples
Lists
Classes
quadrats

ADT behavior is defined by
(i) Set of Variables (ii) Set of Value
(iii) Set of Functions (iv) Set of Operations

i, ii
ii, iii
ii, iv
i, iii

The data type whose representation is known are called

Built in datatype
Derived datatype
Concrete datatype
Abstract datatype

List can also be called as

Functions
Class
Structure
Pairs

Part - B

Generic 2 - Answer All Question

What is a Pair? Give an example.

when the list can be called as pairs?
Differentiate constructors and selectors.

Identify which is the constructor and selector from the following statement.

(i) The Functions that retrieve information from the datatype

(ii) The function which creates an object.

How a class defines a data abstraction?

What is abstract data type?

Part - C

Generic 3 - Answer All Question

Identify the constructor and selector .from the following.

(i) City= Make city (name, lat, Ion)
(ii) Get name (city)
(iii) Make point (x,y)
(iv) x coord (point)
(v) y coord (point)
What are the different ways to access the elements of a list. Give example

write the representation of Abstract datatype (ADT) for rational numbers

Differentiate Concrete data type and abstract datatype

Give an example of an ADT for rational numbers.

write pseudo code to represent rational numbers using list.

Part - D

Generic 5 - Answer All Question

What is a List? Why List can be called as Pairs. Explain with suitable example
Explain the representation of Abstract datatype using rational numbers.

How will you access the multi-item. Explain with example.

How will you facilitate data abstraction. Explain it with suitable example

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