Information Systems MCQs with Answers
Practice important Information Systems MCQs with answers and explanations.
Chapter: 26
Q461:
Which statement about the state of an object is true?
A. It refers to what the object can do.
B. It refers to what the object knows.
C. It refers to the unique identity of an object.
D. It refers to the class the object belongs to.
Correct Answer:
B
Chapter: 26
Q462:
What does the concept of inheritance allow in object-oriented programming?
A. To create new classes based on existing ones
B. To destroy objects after use
C. To maintain data integrity
D. To ensure object uniqueness
Correct Answer:
A
Chapter: 26
Q463:
In OOAD, what does 'polymorphism' refer to?
A. An object’s ability to be in multiple states
B. Multiple methods having the same name but different implementations
C. The process of hiding data within an object
D. The ability of an object to change its state
Correct Answer:
B
Chapter: 26
Q464:
Which of the following is NOT a basic component of an object?
A. State
B. Behavior
C. Classification
D. Identity
Correct Answer:
C
Chapter: 26
Q465:
An object that represents a real-world bicycle would have which of the following as its behavior?
A. Current gear
B. Bike type
C. Weight of the bike
D. Braking and accelerating
Correct Answer:
D
Chapter: 26
Q466:
Fill in the blank: The condition of an object at any moment is known as its _______.
A. State
B. Behavior
C. Identity
D. Class
Correct Answer:
A
Chapter: 26
Q467:
The purpose of the primary relationship in an ERD is to show:
A. The roles of entities
B. The attributes of entities
C. The relationships between entities
D. The classification of data
Correct Answer:
C
Chapter: 26
Q468:
Which of the following concepts is a characteristic of a class?
A. Behavior only
B. State only
C. Identity only
D. All of the above
Correct Answer:
D
Chapter: 26
Q469:
In the context of OOAD, the term "message passing" refers to:
A. The way classes communicate with each other
B. The way objects are destroyed
C. The creation of new classes
D. None of the above
Correct Answer:
A
Chapter: 26
Q470:
What is the role of the lines in an Entity Relationship Diagram?
A. To represent the flow of data
B. To link attributes to entity sets
C. To denote actions of entities
D. To indicate primary keys
Correct Answer:
B
Chapter: 27
Q471:
What is an object in object-oriented analysis and design?
A. A concept with boundaries
B. A class of objects
C. A method of operation
D. None of the above
Correct Answer:
A
Chapter: 27
Q472:
The purpose of a class is to specify a classification of _______.
A. instances of objects
B. attributes and methods
C. functions and procedures
D. none of the above
Correct Answer:
A
Chapter: 27
Q473:
Attributes in a class represent _______.
A. operations performed by an object
B. class characteristics
C. instances of objects
D. none of the above
Correct Answer:
B
Chapter: 27
Q474:
In inheritance, a "van" is considered to be a _______ of "automobile".
A. sub-class
B. object superclass
C. method
D. none of the above
Correct Answer:
A
Chapter: 27
Q475:
Which of the following is a characteristic of polymorphism?
A. It allows multiple forms for an object
B. It defines class structures
C. It restricts method access
D. It specifies object attributes
Correct Answer:
A
Chapter: 27
Q476:
Business Process Reengineering (BPR) focuses on _______. Redesigning business processes
A. Improving marketing strategies
B. Enhancing employee performance
C. None of the above
Correct Answer:
A
Chapter: 27
Q477:
The primary goal of BPR is to achieve improvements in _______. Cost, quality, and speed
A. Employee satisfaction
B. Market share
C. None of the above
Correct Answer:
A
Chapter: 27
Q478:
Effective business processes ensure _______. Quality delivery of products
A. High employee turnover
B. Low customer engagement
C. None of the above
Correct Answer:
A
Chapter: 27
Q479:
Encapsulation in object-oriented programming refers to _______. Hiding the internal state of an object
A. Defining a class structure
B. Promoting inheritance
C. None of the above
Correct Answer:
A
Chapter: 27
Q480:
The phrase "is a kind of" is associated with _______. Inheritance
A. Encapsulation
B. Polymorphism
C. None of the above
Correct Answer:
A