Python Quiz: Module 6

List of Objects: Object Oriented Programming

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1. What is OOP encapsulation?

   • A. The packaging together of properties and methods in order to provide controlled access to data.
   • B. The ability for child classes to override or overload base methods and thereby behave as a different type than its parent class.
   • C. The process of defining a base “parent” class containing attributes and methods which can be use to create a “child” class that uses the attributes and methods of the parent and can add new attributes and methods more specific to itself.
   • D. The process of simplifying interaction with a complex system. Methods and property getters and setters provide an interface that shields the user from underlying code complexity.

2. What is OOP polymorphism?

   • A. The packaging together of properties and methods in order to provide controlled access to data.
   • B. The ability for child classes to override or overload base methods and thereby behave as a different type than its parent class.
   • C. The process of defining a base “parent” class containing attributes and methods which can be use to create a “child” class that uses the attributes and methods of the parent and can add new attributes and methods more specific to itself.
   • D. The process of simplifying interaction with a complex system. Methods and property getters and setters provide an interface that shields the user from underlying code complexity.

3. What is OOP abstraction?

   • A. The packaging together of properties and methods in order to provide controlled access to data.
   • B. The ability for child classes to override or overload base methods and thereby behave as a different type than its parent class.
   • C. The process of defining a base “parent” class containing attributes and methods which can be use to create a “child” class that uses the attributes and methods of the parent and can add new attributes and methods more specific to itself.
   • D. The process of simplifying interaction with a complex system. Methods and property getters and setters provide an interface that shields the user from underlying code complexity.

4. What is OOP inheritance?

   • A. The packaging together of properties and methods in order to provide controlled access to data.
   • B. The ability for child classes to override or overload base methods and thereby behave as a different type than its parent class.
   • C. The process of defining a base “parent” class containing attributes and methods that can be used to create a “child” class which uses the attributes and methods of the parent and can add new attributes and methods more specific to itself.
   • D. The process of simplifying interaction with a complex system. Methods and property getters and setters provide an interface that shields the user from underlying code complexity.

5. Which of the following might be an instruction to instantiate a Shape object?

   • A. shape = new Shape('circle')
   • B. shape = Shape()
   • C. shape = construct(Shape)
   • D. shape = Shape(type='circle',diameter='5')

6. The following code defines an class that creates a bank account. Which code snippet instantiates a bank account object?

   
   class Person: 
       def init(self, first_name,last_name): 
           self.first_name = first_name 
           self.last_name = last_name     
   
       @staticmethod
       def print_grinning_face:
           print("\U0001F606")
   
   

   
   class Bank_Account(Person): 
       def init(self, first_name, last_name, account_number, balance): 
           super().init(first_name,last_name) 
           self.account_number = account_number 
           self.balance = balance 
   
       def deposit(self,amount): 
           self.balance += amount 
   
       def withdrawal(self,amount): 
           self.balance -= amount  
   
       @staticmethod 
       def advice(): 
           print("Save for a rainy day")
   
   

   • A. bank_account = new Bank_Account()
   • B. bank_account = Bank_Account('Vic','Vu',12345,1000.00)
   • C. bank_account = Bank_Account(12345,1000.00)
   • D. bank_account = Person('Vic','Vu',12345,1000.00)

7. Which of the following are examples of instance methods in the code above?

   • A. deposit
   • B. withdrawal
   • C. print_grinning_face
   • D. advice

8. Which of the following are examples of static methods in the Bank Account code?

   • A. deposit
   • B. withdrawal
   • C. print_grinning_face
   • D. advice

9. Which of the following are NOT properties in the Bank Account code?

   • A. account_number
   • B. advice
   • C. last_name
   • D. self

10. When a subclass overrides a parent class method, which of the following characteristics does it have?

    • A. Same name as parent
    • B. Same return type as the parent
    • C. Same number of argments in the calling code
    • D. Same result as the parent

11. When a subclass overloads a parent class method, which of the following characteristics does it have?

    • A. Same name as parent
    • B. It relies on overriding default parameters
    • C. Same number of arguments as the parent
    • D. Same result as the parent