Visual Basic Online Test

50 Questions | By Abi333 | Updated: Mar 22, 2022 | Attempts: 10278

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VB. Net Online Test

Questions and Answers

1.

Which keyword refers the parent of the current object
- A.
  
  Me
- B.
  
  Super
- C.
  
  Mybase
- D.
  
  This
2.

What is the significance of Shadowing a method in VB.Net ?
- A.
  
  It makes a method Overridable
- B.
  
  It makes a method not inheritable
- C.
  
  It replaces all the implementation from high in the inheritance chain
- D.
  
  None
3.

How do you achieve interface implementation in VB.NET?
- A.
  
  Implements
- B.
  
  Uses
- C.
  
  Imports
- D.
  
  Overrides
4.

How does VB.NET instantiates the .NET object
- A.
  
  Using NEW keyword
- B.
  
  Using CREATEOBJECT keyword
- C.
  
  Using GETOBJECT keyword
- D.
  
  Both A & B
5.

Web.Config file is of the type
- A.
  
  .vb
- B.
  
  XML
- C.
  
  Resource
- D.
  
  Aspx
6.

How to determine if a variable has not been initialized in VB.NET?
- A.
  
  ISNull( )
- B.
  
  IsEmpty( )
- C.
  
  IsDdNull( )
- D.
  
  None
7.

Which part of the .NET Framework provides Context for managed code?
- A.
  
  CLR
- B.
  
  .NET Context Manager
- C.
  
  CTS
- D.
  
  None
8.

How are the parameters referenced by default in VB.NET?
- A.
  
  By Object
- B.
  
  By Val
- C.
  
  By Ref
- D.
  
  None
9.

How do you limit implicit type conversion in VB.NET?
- A.
  
  Option Strict On
- B.
  
  Option Strict=1
- C.
  
  Options Strict True
- D.
  
  Option Strict off
10.

Which are the exceptions that VB.Net supports ,C# & other languages doesn’t support ?
- A.
  
  When Clause
- B.
  
  Exit Try statement
- C.
  
  Both A & B
- D.
  
  None
11.

VbOk,VbCancel,VbAbort are all the enumerated members of
- A.
  
  MsgboxStyle Enumeration
- B.
  
  MsgboxResult Enumeration
- C.
  
  CompareMethod Enumeration
- D.
  
  None
12.

Which of the following are the valid method of command object
- A.
  
  ExecuteNonQuery & ExecuteScalar
- B.
  
  ExecuteQuery & ExecuteScalar
- C.
  
  ExecuteParameter
- D.
  
  None
13.

The Visual Basic Compiler is
- A.
  
  Vbcompiler.exe
- B.
  
  Vb.exe
- C.
  
  Vbc.exe
- D.
  
  None
14.

Which statement shows Boxing?
- A.
  
  Dim O as object=I ( as i an integer)
- B.
  
  Dim I as integer=O
- C.
  
  Both
- D.
  
  None
15.

What is the maximum no of dimension that an array can have in VB.NET ?
- A.
  
  3
- B.
  
  5
- C.
  
  32
- D.
  
  Unlimited
16.

Which class is used to run the EXE application file in VB.NET
- A.
  
  Process
- B.
  
  Application
- C.
  
  Exe
- D.
  
  Execute
17.

How do you join strings in VB.NET
- A.
  
  +
- B.
  
  &
- C.
  
  Both A & B
- D.
  
  None
18.

To find out the role of the logged in user, you’ll use
- A.
  
  User.IsInRole(“Administrators”)
- B.
  
  User.Role(“Administrators”)
- C.
  
  UserRole(“Administrators”)
- D.
  
  None
19.

Classes from which namespace will have to be used to read or write to a file?
- A.
  
  System.IO
- B.
  
  System.FileObjects
- C.
  
  System.FileSystem
- D.
  
  None
20.

In VB.NET default value for Boolean variable?
- A.
  
  TRUE
- B.
  
  FALSE
- C.
  
  Nothing
- D.
  
  Null
21.

Which SQL statement is used to delete data from a database ?
- A.
  
  Delete
- B.
  
  Remove
- C.
  
  Collapse
- D.
  
  None of the above
22.

Which SQL statement is used to update data in a database ?
- A.
  
  Save
- B.
  
  Save As
- C.
  
  Modify
- D.
  
  Update
23.

Which SQL statement is used to extract data from a database ?
- A.
  
  Open
- B.
  
  Extract
- C.
  
  Get
- D.
  
  Select
24.

System databases stores server specific configuration information, including authorized users, databases, system configuration settings and remote servers ?
- A.
  
  Model db
- B.
  
  Master db
- C.
  
  Resource db
- D.
  
  Msdb db
25.

A _____ column cannot contain NULL values since it is used to uniquely identify rows in a table.
- A.
  
  Primary key
- B.
  
  Foreign key
- C.
  
  Composite key
- D.
  
  Candidate key