13. What does the protected access modifier mean in PHP?

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

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

A). Public

B). Protected

C). Private

D). Global

Which of the following is NOT a principle of OOP?

A). Inheritance

B). Polymorphism

C). Abstraction

D). Linearity

What is the purpose of method overloading in PHP?

A). Different parameters

B). Same parameters

C). Override a method

D). Access private methods

Which of the following statements is true about polymorphism?

A). It allows a class to inherit from multiple classes

B). It allows a class to have multiple constructors

C). It allows a method to have multiple implementations

D). It allows a class to override parent class methods

What is encapsulation in PHP?

A). Hiding data implementation details

B). Exposing data publicly

C). Implementing interfaces

D). Inheriting properties

What is the main purpose of encapsulation?

A). To make classes more readable

B). To hide implementation details

C). To increase code complexity

D). To prevent inheritance

What keyword is used in PHP to implement inheritance?

A). extends

B). implements

C). inherits

D). inherits_from

Which keyword is used to access parent class properties in PHP?

A). parent

B). super

C). this

D). self

Which keyword is used to access static properties or methods in PHP?

A). this

B). parent

C). self

D). static