Question 1

C# supports a technique known as________, which allows a method to specify explicitly the name of the interface it is implementing.
A)Method Implementation
B)Implicit Interface Implementation
C)Explicit Interface Implementation
D)Iterative Interface Implementation

Accepted Answer

C# supports Explicit Interface Implementation, allowing a method to specify the name of the interface it is implementing directly. This technique is useful when implementing multiple interfaces that have a method with the same signature, as it allows for clear differentiation between the interface methods.

Question 2

The reason that C# does not support multiple inheritances is because of ______.
A)Method collision
B)Name collision
C)Function collision
D)Interface collision

Accepted Answer

The answer of The reason that C# does not support...

Question 3

_______ is a set of devices through which a user communicates with a system using interactive set of commands.
A)Console
B)System
C)Keyboard
D)Monitor

Accepted Answer

A console is a combination of input and output devices used to interact with a computer system, typically involving a display and a keyboard or other input devices, allowing for the execution of commands and the display of results.

Question 4

Exponential formatting character ('E' or 'e') converts a given value to string in the form of _______.
A)m.dddd
B)E+xxx
C)m.dddd,
D)E+xxx,

Accepted Answer

The answer of Exponential formatting character ('E' or 'e') converts...

Question 5

The ______ are the Graphical User Interface (GUI) components created for web based interactions..
A)Web forms
B)Window Forms
C)Application Forms
D)None of the above

Accepted Answer

The answer of The ______ are the Graphical User Interface...

Question 6

In Microsoft Visual Studio, ______ technology and a programming language such as C# is used to create a Web based application.
A)JAVA
B)J#
C)VB.NET
D)ASP.NET

Accepted Answer

ASP.NET is the technology used in conjunction with programming languages like C# to create web-based applications in Microsoft Visual Studio.

Question 7

The controls available in the tool box of the ______ are used to create the user interface of a web based application.
A)Microsoft visual studio IDE
B)Application window
C)Web forms
D)None of the above

Accepted Answer

The controls available in the toolbox of the Microsoft Visual Studio IDE are used to create the user interface of a web-based application.

Question 8

Web Forms consists of a _______ and a _________ .
A)Template, Component
B)CLR, CTS
C)HTML Forms, Web services
D)Windows, desktop

Accepted Answer

Web Forms consist of a Template and a Component. The Template defines the structure and layout of the form, while the Component manages the behavior and data.

Question 9

The ______ parentheses that follow _____ indicate that no information is passed to Main().
A)Empty, class
B)Empty, submain
C)Empty, Main
D)Empty, Namespace

Accepted Answer

The correct answer is C) Empty, Main. This is because in programming, particularly in C# and similar languages, the Main() method is the entry point of a program, and empty parentheses following it indicate that it takes no arguments.

Question 10

The scope of a variable depends on the ____________ and _________.
A)Main method, place of its declaration
B)Type of the variable, console
C)compiler, main
D)Type of the variable, place of its declaration

Accepted Answer

The answer of The scope of a variable depends on...

Question 11

Which of the following statements is correct about the C#.NET code snippet given below?class Student s1, s2; // Here 'Student' is a user-definedclass. s1 = new Student();s2 = new Student();
A)Contents of s1 and s2 will be exactly same.
B)The two objects will get created on the stack.
C)Contents of the two objects created will be exactly same.
D)The two objects will always be created in adjacent memory locations.

Accepted Answer

The two objects s1 and s2 are instances of the Student class. When they are created using the new keyword, they are initialized to their default values. Assuming the Student class does not have any static members that are modified between the creation of s1 and s2, and no constructor logic that introduces variability, the contents (state) of s1 and s2 will be exactly the same right after creation. However, their references (memory addresses) will be different, and they are stored on the heap, not the stack. There's no guarantee they will be in adjacent memory locations.

Question 12

Which of the following can be facilitated by the Inheritance mechanism?1 Use the existing functionality of base class.2 Overrride the existing functionality of base class.3 Implement new functionality in the derived class.4 Implement polymorphic behaviour.5 Implement containership.
A)1, 2, 3
B)3, 4
C)2, 4, 5
D)3, 5

Accepted Answer

Inheritance allows for the use of existing functionality of a base class in a derived class (1), the ability to override existing functionality in the derived class (2), and the implementation of new functionality in the derived class (3). It is also the basis for polymorphic behavior (4), but polymorphism is not explicitly mentioned in the options as facilitated by inheritance in the given choices. Containership (5) refers to a class containing objects of another class, which is not directly facilitated by inheritance but rather by composition.

Question 13

Which of the following should be used to implement a 'Has a' relationship between two entities?
A)Polymorphism
B)Templates
C)Containership
D)Encapsulation

Accepted Answer

Containership, also known as composition, is the correct way to implement a 'Has a' relationship between two entities in object-oriented programming. This relationship indicates that one object contains or is composed of one or more instances of another object.

Question 14

Which of the following should be used to implement a 'Like a' or a 'Kind of' relationship between two entities?
A)Polymorphism
B)Containership
C)Templates
D)Inheritance

Accepted Answer

Inheritance is used to implement a 'Like a' or 'Kind of' relationship, where a subclass inherits properties and behaviors from a superclass.

Question 15

How can you prevent inheritance from a class in C#.NET ?
A)Declare the class as shadows.
B)Declare the class as overloads.
C)Declare the class as seal

Accepted Answer

Declaring a class as sealed in C# prevents it from being inherited by other classes.

Question 16

A class implements two interfaces each containing three methods. The class contains no instance data. Which of the following correctly indicate the size of the object created from this class?
A)12 bytes
B)24 bytes
C)0 byte
D)8 bytes

Accepted Answer

The answer of A class implements two interfaces each containing...

Question 17

Which of the following statements is correct about Interfaces used in C#.NET?
A)All interfaces are derived from an Object class.
B)Interfaces can be inherited.
C)All interfaces are derived from an Object interface.
D)Interfaces can contain only method declaration.

Accepted Answer

Interfaces in C# can indeed be inherited by other interfaces or classes, but they do not derive from an Object class or an Object interface, and they can contain more than just method declarations (e.g., properties, events, indexers).

Question 18

Which of the following statements is correct about an interface used in C#.NET?
A)If a class implements an interface partially, then it should be an abstract class.
B)Class cannot implement an interface partially.
C)An interface can contain static methods.
D)An interface can contain static data.

Accepted Answer

An interface in C#.NET is a contract that any class or struct implementing it must follow. If a class does not implement all the interface members, it must be declared as abstract. This is because the class cannot provide concrete implementations for all the interface members, thus it cannot be instantiated. Interfaces themselves do not allow partial implementation; they require that any implementing class or struct provide implementations for all its members. Interfaces cannot contain static methods or static data; they can only contain method, property, event, and indexers declarations.

Question 19

Which of the following statements is correct about an interface?
A)One interface can be implemented in another interface.
B)An interface can be implemented by multiple classes in the same program.
C)A class that implements an interface can explicitly implement members of that interface.
D)The functions declared in an interface have a body.

Accepted Answer

The answer of Which of the following statements is correct...

Quiz 3: C Programming: Collections, Delegates, and Object-Oriented Concepts

C# supports a technique known as________, which allows a method to specify explicitly the name of the interface it is implementing.

The reason that C# does not support multiple inheritances is because of ______.

_______ is a set of devices through which a user communicates with a system using interactive set of commands.

Exponential formatting character ('E' or 'e') converts a given value to string in the form of _______.

The ______ are the Graphical User Interface (GUI) components created for web based interactions..

In Microsoft Visual Studio, ______ technology and a programming language such as C# is used to create a Web based application.

The controls available in the tool box of the ______ are used to create the user interface of a web based application.

Web Forms consists of a _ and a ___ .

The __ parentheses that follow _ indicate that no information is passed to Main() .

The scope of a variable depends on the ____ and _.

Which of the following statements is correct about the C#.NET code snippet given below?class Student s1, s2; // Here 'Student' is a user-definedclass. s1 = new Student() ;s2 = new Student() ;

Which of the following can be facilitated by the Inheritance mechanism?1 Use the existing functionality of base class.2 Overrride the existing functionality of base class.3 Implement new functionality in the derived class.4 Implement polymorphic behaviour.5 Implement containership.

Which of the following should be used to implement a 'Has a' relationship between two entities?

Which of the following should be used to implement a 'Like a' or a 'Kind of' relationship between two entities?

How can you prevent inheritance from a class in C#.NET ?

A class implements two interfaces each containing three methods. The class contains no instance data. Which of the following correctly indicate the size of the object created from this class?

Which of the following statements is correct about Interfaces used in C#.NET?

Which of the following statements is correct about an interface used in C#.NET?

Which of the following statements is correct about an interface?