Tag: .net

Questions Related to .net

Which element of a class is optional?

.net

  1. Constructs

  2. Fields

  3. Methods

  4. Properties

  5. All of the above.

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Correct Option: E
Explanation:

A class can have any combination of the following elements:

  • Constructs: These are special methods that are used to initialize an object. They are not required, but they are often used.
  • Fields: These are variables that are associated with an object. They are not required, but they are often used to store data about the object.
  • Methods: These are functions that are associated with an object. They are not required, but they are often used to perform operations on the object.
  • Properties: These are a way to access and modify the fields of an object. They are not required, but they can make the code more readable and maintainable.

Therefore, the answer to the question is E. All of the above. Any of these elements can be optional in a class.

What is the suggested order for the definition of class elements from first to last?
.net

  1. Constructs, fields, methods, properties

  2. Properties, constructs, fields, methods

  3. Fields, properties, constructs, methods

  4. Constructs, properties, fields, methods

  5. Methods, constructs, properties, fields

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Correct Option: C

The standard for designing a field is that it be defined as a:
.net

  1. private method.

  2. public method.

  3. private variable.

  4. public variable.

  5. None of the above.

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Correct Option: E

What is the syntax for making a property read-only?
.net

  1. Property Read propertyname As datatype

  2. Read Property propertyname As datatype

  3. ReadOnly Property propertyname As datatype

  4. Read-Only Property propertyname As datatype

  5. RO Property propertyname As datatype

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Correct Option: C

The Get procedure of a property acts like:
.net

  1. an event.

  2. a function.

  3. a variable.

  4. Both a and b.

  5. All of the above.

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Correct Option: B

A method in a class is:

.net

  1. a sub procedure.

  2. a function.

  3. an event.

  4. Both a and b.

  5. All of the above.

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Correct Option: D

How many constructors can a class have?
.net

  1. 1

  2. 2

  3. 3

  4. All of the above.

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Correct Option: D
Explanation:

To solve this question, the user needs to have a basic understanding of object-oriented programming and the concept of constructors.

A constructor is a special method that is called when an object of a class is created. It is used to initialize the data members of the class. The number of constructors that a class can have depends on the programming language being used and the requirements of the developer.

Now, let's go through each option and explain why it is right or wrong:

A. 1: This option is incorrect because a class can have more than one constructor. In fact, many programming languages allow for the creation of multiple constructors with different parameter lists, which can be used to create objects of the class in different ways.

B. 3: This option is incorrect because the number of constructors that a class can have is not fixed. The actual number of constructors that can be defined for a class depends on the language and requirements of the developer.

C. All of the above: This option is also incorrect because option B is incorrect and option C cannot be correct if any of the options are incorrect.

D. 2: This option is incorrect because a class can have more than two constructors. As mentioned earlier, the number of constructors that a class can have depends on the programming language and the requirements of the developer.

Therefore, the correct answer is:

The Answer is: C

A constructor is a special type of:
.net

  1. class.

  2. field.

  3. method.

  4. property.

  5. variable.

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Correct Option: C

Which is true for constructors in a class?

.net

  1. All constructors must have the same number of parameters.

  2. All constructors must be the same parameter data type.

  3. Some constructors can have the same list of parameters.

  4. Only two constructors in a class can have the same list of parameters.

  5. No two constructors in a class can have the same list of parameters.

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Correct Option: E

Which statement will call a constructor of a base class?
.net

  1. Base.New( )

  2. BaseConstructor.New ( )

  3. CallBase.New( )

  4. Constructor.New ( )

  5. MyBase.New( )

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Correct Option: E