In this post you can find Complete and recently updated Correct Question and answers of VB.NET. All Answers updated regularly with new questions. Upwork
Question:* What is a button's default event type?
Answer: • Click
Question:* Which term is not related to multithreading issues?
Answer: • Enumerable
Question:* When you open a loop with a For statement, you can close the loop with a ___________ statement.
Answer: • Next
Question:* The lowest bound value of arrays in VB.NET is ___ ?
Answer: • 0
Question:* What design window allows you to add controls to a form?
Answer: • toolbox window
Question:* Which class has a .Fill method which is used to add or refresh rows in a dataset?
Answer: • DataAdapter
Question:* What type of Visual Basic project creates a standard Windows program?
Answer: • the Windows Forms Application
Question:* A collection of DataRows is called a ________.
Answer: • DataSet
Question:* What does LINQ stand for?
Answer: • Language-Integrated Query
Question:* What specific time value is attributed to the Interval property in the TImer control?
Answer: • milliseconds
Question:* What is the correct way of ending a VB.NET Sub?
Answer: • End Sub
Question:* What toolbar allows you to control alignment and spacing?
Answer: • layout toolbar
Question:* You use _________ to declare a procedure that returns a value.
Answer: • Function
Question:* What character donates a section of commented code?
Answer: • ' apostrophe
Question:* A variable declared as: Dim Var as Integer = 5, after executing the next line of: Var -= 1, would have what value?
Answer: • 4
Question:* Which operation is performed first in the following example? y = 17 + 7 / 2
Answer: • the division operation of 7 / 2
Question:* The serialization of an Object means that it is written out to a stream
Answer: • True
Question:* A 'for' loop will run faster in VB.NET or C# ?
Answer: • Both of them will run equally fast.
Question:* True or False? A WPF control can be embedded inside of a Winforms application.
Answer: • True
Question:* Which method of the SQLCommand class would you use to call a stored procedure which does not return any data?
Answer: • ExecuteNonQuery
Question:* True or False? An interface can inherit from another interface.
Answer: • True
Question:* What technology allows you to issue SQL-like commands against a collection of objects in VB.Net?
Answer: • LINQ
Question:* What object would you use to manipulate a folder?
Answer: • System.IO.Directory
Question:* To make a hidden form appear, you set what property?
Answer: • Visible property to True
Question:* Can a Try-Catch-Finally block be nested inside of the Finally section of another Try-Catch-Finally block?
Answer: • Yes
Question:* In system.streamwriter, what method is used to clear all buffers and causes any buffered data to be written to the underlying stream?
Answer: • Flush
Question:* ____________ is when objects contain their respective data and code.
Answer: • Encapsulation
Question:* What is the base class of all other .Net classes?
Answer: • system.object
Question:* In order to determine whether a dataset has pending modifications to it's data, you would call which method?
Answer: • Dataset.HasChanges
Question:* What keyword should be used when declaring a variable inside a method, whose value should remain the same between calls?
Answer: • Static
Question:* A property of an object can be another object.
Answer: • True
Question:* Protected methods of a class are accessible from their own class and from:
Answer: • Derived classes
Question:* To have your code executed when an if....then statement evaluates to False, you use a ____________ clause.
Answer: • Else
Question:* Terminate a For/Next loop with the _______ statement.
Answer: • exit For
Question:* A class declared as: Public Class Sample(of T), is an example of what type of class?
Answer: • Generic
Question:* True or False? The Finally portion of a Try-Catch-Finally block only executes when an error occurs.
Answer: • False
Question:* How many elements are there in the following array? Dim X(3) as Integer
Answer: • 4
Question:* What character precedes a hotkey or accelerator that you are creating?
Answer: • & (ampersand)
Question:* When declaring two methods with the same names but different parameter types, you should use which keyword?
Answer: • Overloads
Question:* In order to draw to a surface, use the ______________.
Answer: • Graphics object
Question:* In order to copy the schemas, relationships and constraints of a dataset but not any data you would utilize which method?
Answer: • Dataset.Clone
Question:* True or False? A class have both a shared and non-shared constructor.
Answer: • True
Question:* The import required for the registry editing is
Answer: • Microsoft.Win32
Question:* How do you limit implicit type conversion in VB.NET?
Answer: • Option Strict On
Question:* How do you create a Read only Property in VB.NET
Answer: • Using Only Get..EndGet with in property definition
Question:* BCL stands for?
Answer: • Base Class Libraries
Question:* Which of the method is used to display the form as modal?
Answer: • ShowDialog( )
Question:* In the declaration: Dim varA As Object, VarB, VarC As Integer, what type is VarB?
Answer: • Integer
Question:* What is the purpose of Invoke Method?
Answer: • Used to call the procedure through Delegate variable
Question:* To determine which button is being pressed during a mouse-related event, use the _________ property in that particular event.
Answer: • e.button
Question:* Which statement helps prevent multiple threads from accessing the same codeblock at the same time?
Answer: • SyncLock
Question:* COMException class can be found in
Answer: • System.Runtime.Interopservices
Question:* A class declared as friend is accessible from:
Answer: • Anywhere in the same assembly
Question:* When you assign a value type to a reference type, data is copied from the stack to the heap. What is this called?
Answer: • Boxing
Question:* Which of the following is not a method of the Textbox class?
Answer: • Flush()
Question:* You are using the SQLTransaction class for a series of SQL statements. Where do you attach the SQLTransaction by using BeginTransaction?
Answer: • Attach to the SQLClient.SQLConnection
Question:* True or False? A class cannot implement an interface while also inheriting from a base class.
Answer: • False
Question:* Which of the following is the most valid example of the My object in Visual Basic?
Answer: • Me.Text = My.Computer.FileSystem.SpecialDirectories.MyDocuments
Question:* True or False? By default, parameters are passed ByRef.
Answer: • False
Question:* Can an Enum be declared and exposed from within an Interface?
Answer: • Yes
Question:* Which control would you employ to present a yes/no value to an end user?
Answer: • a check box
Question:* The correct syntax for the event that is fired when the mouse pointer rests on a TextBox control is
Answer: • OnMouseHover
Question:* To hold a money value, you would use the Object data type.
Answer: • False
Question:* What method of the Thread class would you call to force multiple threads to complete before moving on to the next section of code?
Answer: • Join
Question:* Do reference types or value types have their value stored on the stack?
Answer: • Value
Question:* Which is not a binding associated with WCF services?
Answer: • DiskSynchronousTransferBinding
Question:* Which keyword refers the parent of the current object
Answer: • Mybase
Question:* What is the difference between Or and OrElse?
Answer: • Or does not short-circuit, while OrElse does
Question:* Which of the following is a valid declaration for a nullable integer type?
Answer: • Dim num As Nullable(of Integer)
Question:* If no access modifier is specified for a class, it is considered _______?
Answer: • Public
Question:* The following variable: Dim product = New With {Key .Name = "paperclips", .Price = 1.29}, is referred to as:
Answer: • An Anonymous Type
Question:* How many times can a class inherit from different parent classes?
Answer: • 1
Question:* What is the value of b after this code is executed? Dim b As Boolean = Nothing
Answer: • False
Question:* Extension methods may only be declared inside of:
Answer: • Modules
Question:* In order to allow multiple WCF services to listen on the same port, you must set which property of the binding class to true?
Answer: • PortSharingEnabled
Question:* Assuming s is a String and i is an Integer, what data type does the following method call return: Int32.TryParse(s, i)
Answer: • Boolean
Question:* When both a parent class and a derived class have both a shared and an instance CTOR, in what order do they fire when creating an instance of the derived class like this: Dim MyObject as New DerivedClass?
Answer: • Derived Shared, Parent Shared, Parent Instance, Derived Instance
Question:* True or False? Tuples are value types as opposed to reference types.
Answer: • False
Question:* In order to allow assembly (a) to see methods declared as friend in assembly (b), what attribute can you use?
Answer: • InternalsVisibleTo
Question:* What is the value of DateTime.MinValue.Year?
Answer: • 1
Question:* True or False? A public method declared inside of a public module is accessible from another assembly.
Answer: • False
Question:* True or False? The following array declaration is valid: Dim X(-1) As Integer.
Answer: • True
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