Web Services Development MCQs with Answers
Practice important Web Services Development MCQs with answers and explanations.
Chapter: 1
Q41:
What is the difference between aggregation and composition?
A. Aggregation is stronger
B. Composition allows independent lifecycle
C. Composition is weaker
D. Aggregation is independent
Correct Answer:
B
Chapter: 1
Q42:
What is the relationship between a company and an employee in a two-way association?
A. Company manages employees
B. Employee owns the company
C. Employee works for the company
D. Company buys employees
Correct Answer:
C
Chapter: 1
Q43:
What happens in a ternary association?
A. Only two objects are connected
B. More than two objects are connected
C. Three objects are connected
D. One object is independent
Correct Answer:
C
Chapter: 1
Q44:
Which class is expected to provide implementations for methods that are not implemented in the base class?
A. Abstract Class
B. Interface
C. Concrete Class
D. Virtual Class
Correct Answer:
C
Chapter: 1
Q45:
What is the key characteristic of an abstract method?
A. It must be implemented immediately
B. It has no implementation
C. It is optional
D. It can be overloaded
Correct Answer:
B
Chapter: 1
Q46:
In inheritance, what does a derived class do?
A. Inherits methods from multiple classes
B. Defines its own methods only
C. Overrides base class methods only
D. Inherits methods and properties from a base class
Correct Answer:
D
Chapter: 1
Q47:
What does an interface in Java define?
A. Public services of a class
B. Private methods of a class
C. Protected members of a class
D. Constructors of a class
Correct Answer:
A
Chapter: 1
Q48:
In Java, an interface provides:
A. Implementation details
B. Public services without implementation
C. Private attributes of a class
D. Overloaded methods
Correct Answer:
B
Chapter: 1
Q49:
In the given diagram, which of the following lines indicates realization or implementation?
A. Dotted line with closed, unfilled arrow
B. Solid line with closed, unfilled arrow
C. Dotted line with open arrow
D. Solid line with open arrow
Correct Answer:
A
Chapter: 1
Q50:
What does the dotted line with a closed, unfilled arrow signify in UML diagrams?
A. Overloading
B. Implementation
C. Inheritance
D. Polymorphism
Correct Answer:
B
Chapter: 1
Q51:
Overloading in Java occurs when:
A. Two or more methods have the same name but different parameters
B. Two methods have the same name and same parameters
C. Two classes have the same name but different methods
D. Two classes have different methods but same parameters
Correct Answer:
A
Chapter: 1
Q52:
Which of the following is an example of method overloading?
A. Print(text_object T); Print(image_object P);
B. Print(Object O);
C. Print(int x); Print(double y);
D. Print(); Print();
Correct Answer:
A
Chapter: 1
Q53:
What must differ in overloaded functions?
A. Data types
B. Return types
C. Access specifiers
D. Method names
Correct Answer:
A
Chapter: 1
Q54:
In method overriding, the method in the child class:
A. Has a different name from the parent class method
B. Has the same name and parameters as the parent class method
C. Has a different return type
D. Has different access specifiers
Correct Answer:
B
Chapter: 1
Q55:
In the example provided, what will the output be when Boy obj = new Boy(); obj.eat(); is executed?
A. Boy is eating.
B. Human is eating.
C. Animal is eating.
D. Object is eating.
Correct Answer:
A
Chapter: 1
Q56:
Which of the following best describes polymorphism in OOP?
A. Ability of a function or object to take on multiple forms
B. Ability to overload methods
C. Ability to override methods
D. Ability to inherit from multiple classes
Correct Answer:
A
Chapter: 1
Q57:
Which type of polymorphism is achieved using inheritance and virtual functions?
A. Compile-time polymorphism
B. Runtime polymorphism
C. Operator overloading
D. Function overloading
Correct Answer:
B
Chapter: 1
Q58:
What will be the output of dog.bark() if dog is a reference of type Dog pointing to an object of type Hound?
A. Bowl
B. Woof
C. Howl
D. Sniff
Correct Answer:
A
Chapter: 1
Q59:
In dynamic binding, when does the binding occur?
A. Compile-time
B. Runtime
C. Link-time
D. Load-time
Correct Answer:
B
Chapter: 1
Q60:
Up-casting in Java refers to:
A. Converting a smaller datatype to a larger datatype
B. Converting a larger datatype to a smaller datatype
C. Converting a float to int
D. Converting a double to float
Correct Answer:
A