17. In PHP, what is the default visibility of class members?

Which of the following is NOT a principle of OOP?

A). Inheritance

B). Polymorphism

C). Abstraction

D). Linearity

What does the protected access modifier mean in PHP?

A). Access to all

B). Access to parent class

C). Access to subclass

D). Restricted access

What is the purpose of the interface keyword in PHP?

A). Finalize a class

B). Define a contract

C). Abstract a class

D). Create a subclass

What is the purpose of method overloading in PHP?

A). Different parameters

B). Same parameters

C). Override a method

D). Access private methods

What keyword is used in PHP to implement inheritance?

A). extends

B). implements

C). inherits

D). inherits_from

In PHP, what is the purpose of the final keyword?

A). To mark a method as deprecated

B). To prevent a class from being inherited

C). To specify a constant value

D). To define a global variable

Which of the following is an advantage of inheritance in PHP?

A). Increases code reusability

B). Decreases code maintainability

C). Adds complexity to the code

D). Makes code less modular

In PHP, what is the purpose of the abstract keyword?

A). To specify a class as final

B). To specify a class as abstract

C). To prevent a class from being instantiated

D). To mark a method as deprecated

What is the primary purpose of method overriding in PHP?

A). Hide implementation

B). Provide alternative

C). Prevent inheritance

D). Define in parent

How is polymorphism achieved in PHP?

A). Method overriding

B). Method overloading

C). Method inheritance

D). Method encapsulation