Unit II Polymorphism Lesson #4: Polymorphism Explained
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Questions and Answers

What term refers to the behavior where objects in different classes can behave differently when sent the same messages?

  • Inheritance
  • Encapsulation
  • Polymorphism (correct)
  • Abstraction

    • In robot programming, why is it recommended to keep each class simple and define robots that perform one task effectively?

  • To avoid naming tasks performed by the robots
  • To complicate the program structure
  • To ensure each class focuses on performing a specific task efficiently (correct)
  • To define robots that can perform multiple unrelated tasks

    • What is the benefit of having robot teams cooperate in tasks instead of using individual robots?

  • Reduced complexity in the program
  • Limited usage of polymorphism
  • Increased task efficiency (correct)
  • Elimination of null references

    • How does polymorphism relate to robot behavior in different classes?

    <p>It allows robots in different classes to behave differently</p> Signup and view all the answers

    Why is it important for each robot class to be able to name the overall task or service it provides?

    <p>To clarify the purpose and functionality of the robot class</p> Signup and view all the answers

    What problem-solving method involves having multiple robots cooperate in performing a task?

    <p>Robot teamwork</p> Signup and view all the answers

    What is a key concept mentioned in the text regarding robot references?

    <p>Assigning a single name to multiple robots</p> Signup and view all the answers

    How many robots are involved in the task described in the text?

    <p>Three</p> Signup and view all the answers

    What does the term 'Polymorphism' refer to in the context of the text?

    <p>Allowing objects of different classes to be treated as objects of a common superclass</p> Signup and view all the answers

    In the context of robot programming, what does it mean to assign a value to a reference?

    <p>Linking a reference to a specific robot object</p> Signup and view all the answers

    What is the purpose of using 'null' in declaring robot references?

    <p>To refer to non-existent robots</p> Signup and view all the answers

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