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Object Orientated Programming 3

Authored by O Hawkridge

Computers

11th - 12th Grade

Used 5+ times

Object Orientated Programming 3
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14 questions

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1.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Which of the following terms describes a group of objects with common properties?

function

event

class

parameter

Answer explanation

The term 'class' refers to a group of objects that share common properties or characteristics, making it the correct choice. In programming, a class defines a blueprint for creating objects with similar attributes and behaviors.

2.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

When a class is used to build an object, the object is called a(n) ___ of the class.

method

property

instance

object

Answer explanation

When a class is used to create an object, that object is referred to as an 'instance' of the class. This term signifies that the object is a specific realization of the class blueprint.

3.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

What is the term for the various characteristics of an object?

properties

instances

arguments

methods

Answer explanation

The term 'properties' refers to the various characteristics of an object, such as its attributes and behaviors. This distinguishes it from 'instances', 'arguments', and 'methods', which have different meanings in programming.

4.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The actions that an object can perform are called ___.

arguments

parameters

methods

classes

Answer explanation

The actions that an object can perform are called methods. Methods define the behavior of an object in programming, allowing it to perform specific tasks or operations.

5.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

I want to write a shape-drawing programme to draw lots of rectangles on screen. I start the programme with the following line of code:

rect = Rectangle()

Which of the following lines of code could I add to the programme to create another instance of the class Rectangle?

Rectangle() * 2

rect2 = Rectangle()

rect = Rectangle2()

rect = rect + Rectangle()

Answer explanation

The correct choice is 'rect2 = Rectangle()' because it creates a new instance of the Rectangle class. The other options either attempt invalid operations or reference a non-existent class.

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Which of the following is a mechanism by which an object acquires the properties of another object?

Encapsulation

Abstraction

Inheritance

Polymorphism

Answer explanation

Inheritance is a mechanism in object-oriented programming where one class acquires the properties and behaviors of another class, allowing for code reuse and the creation of hierarchical relationships.

7.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The wrapping up of data and functions into a single unit is called

overloading

class

object

encapsulation 

Answer explanation

The wrapping up of data and functions into a single unit is called encapsulation. It is a fundamental concept in object-oriented programming that helps in bundling the data (attributes) and methods (functions) together.

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