CS403P Quiz 1 by Lucky

Question: Car carries passengers. Bus carries passengers. Truck carries luggage. Harvester harvests the crops. Car, Bus, Harvester and Truck are derived from which class?

Passenger Transport Navy Ships Vehicle Public Transport

Prove: 1 Car, Bus, Harvester, and Truck belong to the Vehicle class as they are all types of vehicles.

Prove: 2 The correct option is " Vehicle".

Car, Bus, Harvester, and Truck are all types of vehicles. While cars and buses are primarily used for passenger transport, trucks are commonly used for transporting goods and luggage, and harvesters are used for harvesting crops. However, they all belong to the broader category of vehicles, which includes any type of machine used for transportation.

Question: Which of the following concept deals with the security of data?

Data Hiding Polymorphism

Generalization Prove: 1 The concept that deals with the security of data is Data Hiding. Prove: 2 The correct option is " Data Hiding." Data Hiding is a concept that deals with the security of data by restricting access to it and encapsulating it within a class or module. It is a technique used to protect sensitive information and prevent unauthorized access or modification.

Question: Chair is a(an) ______ object and patent is a(an) _____ object.

Intangible. Tangible Tangible, Intangible Intangible, Intangible Tangible, Tangible

Prove: 1 Chair is a tangible object and patent is an intangible object. Prove: 2 The correct option is " Tangible, Intangible." A chair is a tangible object because it can be physically touched and occupies space. A patent, on the other hand, is an intangible object because it is a legal right or protection granted for an invention or innovation. It cannot be physically touched or seen, but it represents a legal concept or intellectual property.

Question: Which of the following is used to achieve information hiding?

Encapsulation Composition Aggregation Prove: 1 Encapsulation is used to achieve information hiding. Prove: 2 The correct option is " Encapsulation." Encapsulation is a principle of object-oriented programming that combines data and methods within a class, hiding the internal implementation details from the outside world. It allows for information hiding by providing a protective barrier that prevents direct access to the internal state of an object. By encapsulating data and providing controlled access through methods, the internal details can be hidden, and the object's behavior can be controlled and modified without affecting other parts of the program.

Question: Which of the following can be the attribute of the Employee class?

Roll Number Salary Course GPA

Prove: 1 The attribute that can be the attribute of the Employee class is Salary. Prove: 2 The correct option is " Salary." In the context of an Employee class, " Salary" is a suitable attribute. An attribute represents a characteristic or property of an object. In the case of an Employee class, the salary can be considered an attribute that defines the monetary compensation associated with the employee's job. " Roll Number" is typically associated with student records or identification and is not commonly used as an attribute in an Employee class. " Course" and "GPA" are attributes more commonly associated with student or academic records and are less relevant in the context of an Employee class.

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