Web Services Development MCQs with Answers
Practice important Web Services Development MCQs with answers and explanations.
Chapter: 7
Q201:
How can a primitive data type be passed by reference in Java?
A. Using the 'final' keyword
B. Wrapping it in an object
C. Passing it as an array
D. Using the 'static' keyword
Correct Answer:
C
Chapter: 7
Q202:
What is the result of the following code execution: int[] myInt = { 1 }; increment(myInt, 5); System.out.println("Array contents : " + myInt[0]);
A. Array contents: 6
B. Array contents: 1
C. Array contents: 5
D. Array contents: 7
Correct Answer:
A
Chapter: 7
Q203:
Which method is called when Java program execution begins?
A. main()
B. start()
C. init()
D. run()
Correct Answer:
A
Chapter: 7
Q204:
What is a formal parameter in a method?
A. The actual value passed into the method
B. The identifier used to stand for the value passed
C. The method's return type
D. A variable in a class
Correct Answer:
B
Chapter: 7
Q205:
What is an actual parameter in a method?
A. The method's return type
B. The identifier used to stand for the value passed
C. The actual value passed into the method
D. The method name
Correct Answer:
C
Chapter: 7
Q206:
Which keyword is used to refer to the current class instance variable?
A. super
B. this
C. static
D. final
Correct Answer:
B
Chapter: 7
Q207:
Which keyword can be used to invoke the current class constructor?
A. super
B. this
C. static
D. final
Correct Answer:
B
Chapter: 7
Q208:
What does a static method in a class not have access to?
A. Static methods
B. Static data
C. Instance methods
D. Instance variables
Correct Answer:
D
Chapter: 7
Q209:
How can static methods and variables be accessed?
A. By creating an instance of the class
B. Using the class name
C. By passing them as arguments
D. By returning them from a method
Correct Answer:
B
Chapter: 7
Q210:
Which of the following is NOT true about static variables?
A. They are shared among all instances of the class
B. They are initialized when the class is loaded
C. They are initialized with default values when the class is loaded
D. They are specific to each instance of the class
Correct Answer:
D
Chapter: 7
Q211:
What is the primary difference between field variables and instance variables?
A. Field variables are declared in methods, instance variables in class bodies
B. Field variables are associated with an object, instance variables are shared among all objects
C. Field variables are accessible within a class, instance variables are accessible across the entire application
D. Field variables are specific to the instance of the class, instance variables are shared among all instances
Correct Answer:
B
Chapter: 7
Q212:
Which type of constructor has no parameters?
A. Default constructor
B. Parameterized constructor
C. Static constructor
D. Instance constructor
Correct Answer:
A
Chapter: 7
Q213:
What must be true about the name of a constructor?
A. It must be different from the class name
B. It must be the same as the class name
C. It must be a keyword
D. It must be unique within the class
Correct Answer:
B
Chapter: 7
Q214:
Fill in the blank: When a method is called, the formal parameter is temporarily bound to the ________ parameter.
A. default
B. actual
C. static
D. class
Correct Answer:
B
Chapter: 7
Q215:
Fill in the blank: Static variables are initialized during the ________ of the class.
A. execution
B. creation
C. loading
D. destruction
Correct Answer:
C
Chapter: 7
Q216:
Which statement is true about a parameterized constructor?
A. It has no parameters
B. It can be used to initialize object data with specific values
C. It is invoked at the time of object creation without arguments
D. It provides default values to the object
Correct Answer:
B
Chapter: 7
Q217:
Fill in the blank: The keyword 'static' indicates that a variable is ________ across all instances of a class.
A. unique
B. shared
C. local
D. private
Correct Answer:
B
Chapter: 8
Q218:
What is the primary advantage of abstraction in programming?
A. Separates code into different files
B. Reduces code duplication
C. Allows for more complex code structures
D. Simplifies domain model representation
Correct Answer:
B
Chapter: 8
Q219:
Which of the following is NOT a principle of abstraction?
A. Avoiding duplication
B. Representing objects before implementation
C. Using multiple inheritance
D. Creating reusable components
Correct Answer:
C
Chapter: 8
Q220:
Abstraction helps in refactoring code by making it _______.
A. Extensible
B. Complex
C. Hard to understand
D. Monolithic
Correct Answer:
A