Elance VB.NET Test Answers 2015



What is a button's default event type?
Click
Tick
MultilineChanged
MouseMove


Which term is not related to multithreading issues?
ApartmentState
Mutex
SpinLock
Enumerable


In order to determine whether a dataset has pending modifications to it's data, you would call which method?
Dataset.SaveRequired
Dataset.IsDirty
Dataset.SyncRequired
Dataset.HasChanges


What design window allows you to add controls to a form?
properties window
custom design window
solutions explorer window
toolbox window


Which operation is performed first in the following example? y = 17 + 7 / 2
the division operation of 7 / 2
the addition operation of 17 + 7


The serialization of an Object means that it is written out to a stream
False
True


A property of an object can be another object.
False
True


What technology allows you to issue SQL-like commands against a collection of objects in VB.Net?
WCF
LINQ
T-SQL
PLINK


The lowest bound value of arrays in VB.NET is ___ ?
Infinite
-1
0
1


True or False? An interface can inherit from another interface.
True
False


Which method of the SQLCommand class would you use to call a stored procedure which does not return any data?
ExecuteNonQuery
EndExecuteReader
ExecuteScalar
ExecuteReader


What object would you use to manipulate a folder?
CreateDirectory
System.IO.Directory
OpenFileDialog
FileLen( )


A 'for' loop will run faster in VB.NET or C# ?
VB.NET
None of these
C#
Both of them will run equally fast.


In system.streamwriter, what method is used to clear all buffers and causes any buffered data to be written to the underlying stream?
Clear
Expel
Push
Flush


True or False? A WPF control can be embedded inside of a Winforms application.
True
False


Can a Try-Catch-Finally block be nested inside of the Finally section of another Try-Catch-Finally block?
No
Yes


To make a hidden form appear, you set what property?
ControlBox to True
Visible property to True
ControlBox to False
Visible property to False


You use _________ to declare a procedure that returns a value.
Call
MyProcedure
Function
Sub


What character donates a section of commented code?
' apostrophe
$ dollar sign
{ curly braces
/ forward slash


____________ is when objects contain their respective data and code.
Modification
Instantiation
Assignment
Encapsulation


A variable declared as: Dim Var as Integer = 5, after executing the next line of: Var -= 1, would have what value?
1
6
4
-5


Which class has a .Fill method which is used to add or refresh rows in a dataset?
SQLCommandBuilder
SQLDependency
DataAdapter
DataConnection


What toolbar allows you to control alignment and spacing?
base toolbar
normal toolbar
project toolbar
layout toolbar


What specific time value is attributed to the Interval property in the TImer control?
nanoseconds
seconds
minutes
milliseconds


What type of Visual Basic project creates a standard Windows program?
the Windows Forms Application
Windows Presentation Foundation
Console Application Template
Class Library Template


A collection of DataRows is called a ________.
System.Data
DataGroup
Data.Set
DataSet


What is the correct way of ending a VB.NET Sub?
Close Sub
Kill
End Sub
End
Exit Sub


What does LINQ stand for?
Lowest-Integrated Question
Linear Query
Light Interface Number Query
Language-Integrated Query


What is the base class of all other .Net classes?
net.base
assembly.root
system.object
system.base


Protected methods of a class are accessible from their own class and from:
Abstract classes
No other classes
Derived classes


True or False? The Finally portion of a Try-Catch-Finally block only executes when an error occurs.
True
False


When you open a loop with a For statement, you can close the loop with a ___________ statement.
Next
End While
Do
EndLoop


It is possible to define a string type as nullable?
False
True


What keyword should be used when declaring a variable inside a method, whose value should remain the same between calls?
Fixed
Private
Immutable
Static


A class declared as: Public Class Sample(of T), is an example of what type of class?
Anonymous
Dynamic
Fixed
Generic


To have your code executed when an if....then statement evaluates to False, you use a ____________ clause.
GoTo
If Not
End If
Else


Terminate a For/Next loop with the _______ statement.
exit For
continue
exit
exit Loop


How many elements are there in the following array? Dim X(3) as Integer
4
3
0


What character precedes a hotkey or accelerator that you are creating?
# (hash)
- (hyphen)
& (ampersand)
$ (dollar sign)


When declaring two methods with the same names but different parameter types, you should use which keyword?
Overloads
Overrides
Implements
Shadows


True or False? A class have both a shared and non-shared constructor.
False
True


In order to copy the schemas, relationships and constraints of a dataset but not any data you would utilize which method?
Dataset.Duplicate
Dataset.Copy
Dataset.Replicate
Dataset.Clone


In order to draw to a surface, use the ______________.
Graphics object
Control Panel
Pen Object
Paint event


How do you limit implicit type conversion in VB.NET?
Option Strict = 1
Options Strict True
Option Strict On
Option Strict Off


How do you create a Read only Property in VB.NET
Using Only Get..EndGet with in property definition
Using both Get and Set
Using Only Set..EndSet with in property definition
None of the above


BCL stands for?
Base Class Language
Bass Class Language
Binary Common Libraries
Binary Class Language
Base Class Libraries


The import required for the registry editing is
System.Security.AccessControl
System.Security
System.Security.Permissions
Microsoft.Win32


True or False? A class cannot implement an interface while also inheriting from a base class.
False
True


What is the purpose of Invoke Method?
Used to call the procedure through Delegate variable
None
Used to call any procedure
Both


Which of the method is used to display the form as modal?
Show( )
ShowDialog( )
ShowModal()
LoadDialog()
Activate( )


A class declared as friend is accessible from:
Anywhere in the same assembly
Only methods in the same class
Any derived class
Anywhere in another assembly


To determine which button is being pressed during a mouse-related event, use the _________ property in that particular event.
KeyUp
e.button
InputBox
KeyPress


In the declaration: Dim varA As Object, VarB, VarC As Integer, what type is VarB?
Generic
String
Integer
Object


Which statement helps prevent multiple threads from accessing the same codeblock at the same time?
SyncLock
MemLock
IsolateThreads
IsolateAccess


True or False? By default, parameters are passed ByRef.
False
True


Which of the following is not a method of the Textbox class?
ToString()
Flush()
Update()
Refresh()
SuspendLayout()


When you assign a value type to a reference type, data is copied from the stack to the heap. What is this called?
Heaping
Registering
Unstacking
Boxing


COMException class can be found in
System.Debug
System.Exceptions
System.Data
System.Runtime.Interopservices


Can an Enum be declared and exposed from within an Interface?
No
Yes


To hold a money value, you would use the Object data type.
TRUE
False


You are using the SQLTransaction class for a series of SQL statements. Where do you attach the SQLTransaction by using BeginTransaction?
Attach to each SQLClient.SQLCommand
Attach to the SQLClient.SQLConnection


Which of the following is the most valid example of the My object in Visual Basic?
Me.Text = My.Computer.FileSystem.SpecialDirectories.MyDocuments
Me.Text = My(Computer), FileSystem(SpecialDirectories),MyDocuments
Me.Text = My(Computer.FileSystem.SpecialDirectories.MyDocuments)
The My object is not present in the Visual Basic language.


Which is not a binding associated with WCF services?
BasicHttpBinding
NetNamedPipeBinding
WSFederationHttpBinding
DiskSynchronousTransferBinding


Which control would you employ to present a yes/no value to an end user?
a radio button
a check box
a text field
an accept button


Do reference types or value types have their value stored on the stack?
Value
Reference


The correct syntax for the event that is fired when the mouse pointer rests on a TextBox control is
OnMouseRest()
OnMouseUp()
OnMouseHover
OnMouseOver()


What method of the Thread class would you call to force multiple threads to complete before moving on to the next section of code?
Join
Bond
Merge
SetApartmentState


What is the difference between Or and OrElse?
Or has higher precedence than OrElse
Or can only be used for bitwise operations
Or does not short-circuit, while OrElse does
Or was deprecated and replaced with OrElse


Which keyword refers the parent of the current object
Me
Mybase
This
Super


The following variable: Dim product = New With {Key .Name = "paperclips", .Price = 1.29}, is referred to as:
An Anonymous Type
A Generic Class
An Enumerated Type
A Pseudo Class


Which of the following is a valid declaration for a nullable integer type?
Dim num As Nullable Integer
Dim? num As Integer
Dim num As Integer<Nullable>
Dim num As Nullable(of Integer)


If no access modifier is specified for a class, it is considered _______?
Private
Friend
Protected
Public


How many times can a class inherit from different parent classes?
unlimited
0
2
1


What is the value of b after this code is executed? Dim b As Boolean = Nothing
True
(this results in a runtime exception)
Nothing
False


Extension methods may only be declared inside of:
Classes
Modules
Interfaces
Abstract Classes


Assuming s is a String and i is an Integer, what data type does the following method call return: Int32.TryParse(s, i)
String
Boolean
Short
Integer
Char


In order to allow multiple WCF services to listen on the same port, you must set which property of the binding class to true?
AllowMultiplePorts
PortSharingEnabled
PermitDuplicatePort
EnablePortSharing


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?
Derived Shared, Derived Instance, Parent Shared, Parent Instance
Parent Shared, Parent Instance, Derived Shared, Parent Instance
Derived Shared, Parent Shared, Parent Instance, Derived Instance
Parent Instance, Derived Instance, Derived Shared, Parent Shared


True or False? Tuples are value types as opposed to reference types.
True
False


In order to allow assembly (a) to see methods declared as friend in assembly (b), what attribute can you use?
ExposeAssemblyMethods
There is no such attribute
AllowFriendVisibility
InternalsVisibleTo


What is the value of DateTime.MinValue.Year?
1900
-1
1970
1
0


True or False? A public method declared inside of a public module is accessible from another assembly.
False
True


True or False? The following array declaration is valid: Dim X(-1) As Integer.
False
True


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