Quiz - Oops & Ooad

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Partharoy
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Quizzes Created: 1 | Total Attempts: 327
Questions: 10 | Attempts: 327

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Quiz - Oops & Ooad - Quiz


Questions and Answers
  • 1. 

    The most generalized class and also said to be a root class?

    • A.

      Super class

    • B.

      Sub class

    • C.

      Base class

    • D.

      Child class

    Correct Answer
    C. Base class
    Explanation
    A base class is the most generalized class in object-oriented programming and is often referred to as the root class. It serves as a foundation for other classes and can be inherited by other classes to extend or modify its behavior. It provides common attributes and methods that can be shared by its subclasses, allowing for code reuse and promoting modular design. In this context, the term "base class" is synonymous with "root class" as they both refer to the same concept of a fundamental class in a class hierarchy.

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  • 2. 

    In object Oriented programming units of data are called ___________________ .

    • A.

      Bit

    • B.

      Structures

    • C.

      Byte

    • D.

      Blocks

    Correct Answer
    B. Structures
    Explanation
    In object-oriented programming, units of data are called structures. Structures are used to group together related data items into a single unit. They allow for the creation of complex data types that can contain different types of data, such as integers, strings, and other structures. Structures provide a way to organize and manage data in a program, making it easier to read and maintain.

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  • 3. 

    Which operators cannot be overloaded?

    • A.

      Ternary Operator

    • B.

      Scope Resolution Operator

    • C.

      Bitwise Operator

    • D.

      Assignment Operator

    Correct Answer
    B. Scope Resolution Operator
    Explanation
    The scope resolution operator (::) is used to access static members of a class or namespace. It cannot be overloaded because it serves a specific purpose in C++ and has a fixed behavior. Overloading it would lead to ambiguity and confusion in the code. Therefore, the scope resolution operator cannot be overloaded.

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  • 4. 

    A model is a ________ of reality?

    • A.

      Classification

    • B.

      Simplification

    • C.

      Justification

    • D.

      Clarification

    Correct Answer
    B. Simplification
    Explanation
    A model is a simplification of reality because it represents a simplified version or abstraction of a complex system or phenomenon. Models are created to make understanding and analysis of reality easier by reducing its complexity and focusing on the most important aspects. They help in making predictions, testing theories, and gaining insights into real-world situations. By simplifying reality, models allow us to study and understand complex systems in a more manageable and comprehensible way.

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  • 5. 

    A physical element which represents a computational resource and exists at run time.

    • A.

      Node

    • B.

      Object

    • C.

      Interface

    • D.

      Component

    Correct Answer
    A. Node
    Explanation
    A node is a physical element that represents a computational resource and exists at run time. It can be a device, a server, or any other hardware component that is capable of processing and executing tasks. Nodes are important in distributed systems as they contribute to the overall computing power and functionality of the system. They can communicate with each other and collaborate to perform complex computations or execute specific functions.

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  • 6. 

    A relationship between classes and interfaces can be viewed as ____________ relationship.

    • A.

      Association

    • B.

      Generalization

    • C.

      Link

    • D.

      Realization

    Correct Answer
    D. Realization
    Explanation
    In object-oriented programming, a relationship between classes and interfaces can be viewed as a "realization" relationship. This means that a class implements an interface, providing the necessary implementation for the methods defined in the interface. This relationship allows for polymorphism, where objects of different classes that implement the same interface can be treated interchangeably.

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  • 7. 

    A ________ is a condition or situation during the life of an object during which it satisfies some condition, performs some activity, or waits for some events.

    • A.

      Class

    • B.

      State

    • C.

      Activity

    • D.

      Specification

    Correct Answer
    B. State
    Explanation
    A state refers to a condition or situation during the life of an object where it satisfies some condition, performs some activity, or waits for some events. In object-oriented programming, objects have different states based on their attributes and behavior at a particular moment. The state of an object determines how it will respond to different methods and operations. It is an essential concept in software development as it helps in modeling and understanding the behavior and characteristics of objects in a system.

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  • 8. 

     _________ relationship is used to model an inheritance.

    • A.

      Specialization

    • B.

      Generalization

    • C.

      Dependency

    • D.

      None

    Correct Answer
    B. Generalization
    Explanation
    Generalization is the correct answer because it is a relationship type used to model inheritance in object-oriented programming. In inheritance, a subclass inherits the properties and behaviors of a superclass, allowing for code reuse and creating an "is-a" relationship between the classes. Generalization represents the superclass-subclass relationship, where the subclass is a specialized version of the superclass. This relationship allows the subclass to inherit the attributes and methods of the superclass, while also adding its own unique features.

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  • 9. 

    A _________ diagram emphasizes the structural organization of the objects that send and receive messages.

    • A.

      Sequence

    • B.

      Activity

    • C.

      use case

    • D.

      Collaboration

    Correct Answer
    D. Collaboration
    Explanation
    A collaboration diagram emphasizes the structural organization of the objects that send and receive messages. This type of diagram is used to show how different objects interact with each other to achieve a common goal or perform a specific task. It visually represents the relationships and interactions between objects, making it easier to understand the flow of messages and the overall structure of the system.

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  • 10. 

    The essential characteristics of an object that distinguish it from all other kinds of objects and thus provide crisply defined conceptual boundaries, relative to the perspective of the viewer is called:

    • A.

      Encapsulation

    • B.

      Modularity

    • C.

      Hierarchy

    • D.

      Abstraction

    Correct Answer
    D. Abstraction
    Explanation
    Abstraction refers to the essential characteristics of an object that distinguish it from all other kinds of objects and provide crisply defined conceptual boundaries, relative to the perspective of the viewer. It involves focusing on the relevant details of an object while ignoring the irrelevant ones, allowing for a simplified and more manageable representation. Abstraction helps in understanding complex systems by breaking them down into simpler and more understandable components, making it a crucial concept in object-oriented programming and design.

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