VB.Net Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to VB.Net. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Which of the following is correct about VB.NET?

A - VB.NET has complete support for object-oriented concepts. VB.NET has complete support for object-oriented concepts.

B - Everything in VB.NET is an object, including all of the primitive types (Short, Integer, Long, String, Boolean, etc.) and user-defined types, events, and even assemblies.

C - All objects inherits from the base class Object.

D - All of the above.

Answer : D

Explanation

All of the above options are correct.

Q 2 - Which of the following converts the expression to Integer data type in VB.NET?

Answer : C

Explanation

CInt(expression) − Converts the expression to Integer data type.

Q 3 - Which of the following is true about catch block in VB.NET?

A - A program catches an exception with an exception handler at the place in a program where you want to handle the problem.

B - The catch keyword indicates the catching of an exception.

C - Both of the above.

D - None of the above.

Answer : C

Explanation

Both of the above options are correct.

Q 4 - Which of the following accesss modifier indicates that a conversion operator (CType) converts a class or structure to a type that might not be able to hold some of the possible values of the original class or structure?

Answer : C

Explanation

Narrowing − Indicates that a conversion operator (CType) converts a class or structure to a type that might not be able to hold some of the possible values of the original class or structure.

Q 5 - Which of the following accesss modifier specifies that one or more declared programming elements have no access restrictions?

Answer : C

Explanation

Public − Specifies that one or more declared programming elements have no access restrictions.

Q 6 - Which of the following statement declares the name of a structure and introduces the definition of the variables, properties, events, and procedures that the structure comprises?

Answer : A

Explanation

Structure − Declares the name of a structure and introduces the definition of the variables, properties, events, and procedures that the structure comprises.

Q 7 - Which of the following directive is used for indicating a mapping between specific lines of source code and text external to the source?

A - #Const

B - #ExternalSource

C - #If...Then...#Else

D - #Region

Answer : B

Explanation

#ExternalSource − This directive is used for indicating a mapping between specific lines of source code and text external to the source. It is used only by the compiler and the debugger has no effect on code compilation. This directive allows including external code from an external code file into a source code file.

Q 8 - Which of the following operator declares the parameters and code that define a function lambda expression?

A - AddressOf

B - Await

C - GetType

D - Function Expression

Answer : D

Explanation

Function Expression − It declares the parameters and code that define a function lambda expression.

Q 9 - Which of the following Collection class of VB.NET uses a key to access the elements in the collection?

Answer : B

Explanation

Hashtable − It uses a key to access the elements in the collection. A Hashtable is used when you need to access elements by using key, and you can identify a useful key value. Each item in the hash table has a key/value pair. The key is used to access the items in the collection.

Q 10 - User-defined exception classes are derived from the ApplicationException class in VB.NET?

A - true

B - false

Answer : A

Explanation

User-defined exception classes are derived from the ApplicationException class.

vb.net_questions_answers.htm