VB.NET Quiz # 5

Which of the following helps assemblies become self describing?

JIT

Manifest

CTS

Application Domain

You have an array list named "alCustomer" containing 200 items. The array list is sorted, and you want to copy customers 21 to 50 from this list to a new array list named "alSpecial". Which of the following methods will you use?

alSpecial.Insert(0, alCustomer.SetRange(20, 30))

alSpecial.InsertRange(0, alCustomer.GetRange(20, 30))

alSpecial.Add(0, alCustomer.SetRange(21, 50))

alSpecial.Add(0, alCustomer.GetRange(21, 50)) 

The global assembly cache:

Can store two dll files with the same name

Can store two dll files with the same name, but different versions

Can store two dll files with the same name and same version

Can not store dll files with the same name 

On a user form, to catch the user key strokes in the key press event of a text box, you would use:

e.Key

e.Keys

e.KeyChar

e.KeyVal 

A programmer wrote a small function to return the sum of two bytes:
  
Public Function add(ByVal b1 As Byte, ByVal b2 As Byte) As Byte
      
        Return b1 + b2
  
End Function

What will happen when add(200, 80) is called by the program?

The result returned will be 280

An exception will be thrown

A syntax error will stop the execution

Bytes cannot be passed by value 

Which transport protocol is used to call a Web Service?

SOAP

HTTP

SMTP

Any of these can be used 

Which of the following is not correct with regard to shared assembly?

Its version can be controlled by the author only

It can be shared by many applications

It must get registered with the machine registry

It is installed in the global assembly cache 

In .NET generics, the type parameter:

Needs to be constrained in container classes

Needs to be constrained in all the classes

Cannot be constrained in container classes

Cannot be constrained in any class 

Which of the following options represents the possible values for the 'DataRowVersion' class?

Current, Revised, Original, Modified

Revised, Default, Original, Modified

Current, Default, Edited, Proposed

Current, Default, Original, Proposed

Which of the following tools can be used to modify and grant permissions to code groups?

Soapsuds.exe

Lldasm.exe

CASPol.exe

PerfMon.exe

SN.exe 

You have written a simple function to multiply two integers:

Line 1 Public Function multiply(ByVal a As Int32,
Line 2                                  ByVal b As Int32) As Int32
Line 3         return (a * b)
Line 4 End Function

What will happen on running the program?

The program will compile and run successfully

The compilation error produced will be fixed by changing As Int32' to 'As Integer' in line 2

The compilation error produced will be fixed by replacing line 3 with Return CType(a * b, Int32)

The compilation error produced will be fixed by appending "_" (underscore) to the end of line 1 

Which namespace contains the DataSet class?

System

System.data

System.dataset

System.data.dataset

You have a table named 'FirstQTR' and want to create another table named 'SecondQTR' which is exactly the same as 'FirstQTR', including DataTable schema and constraints. Which of the following methods will fulfill this requirement?

Copy

Clone

Duplicate

Equals 

Which one of the following statements is true about MSIL code?  
  

It is compiled to native code by JIT compilers

It is source code-specific

It is only found in static assemblies

It is architecture-specific

What will be the result of the following code:

        Dim employeeDS As DataSet
        employeeDS.Tables.Add(new DataTable("FirstQTR"))

It will create a table named FirstQTR

It does nothing because an object reference has not been set to an instance of the DataSet object

It will produce an error because an object reference has not been set to an instance of the DataSet object

None of the above

What does Managed Data refer to?

The data stored by CLR

The data allocated by CLR GC

The data de-allocated by CLR GC

The data allocated and de-allocated by CLR GC 

With VB.Net, controls can be created at run time. The statement that can be used to add events to such runtime controls is:

CreateHandler

CreateEventHandler

AddHandler

AddEventHandler

Which of the following manages the code during execution?

Coding Manager

JIT

Code Manager

Coder Manager

Which of the following is not correct about DataReader?

It provides a forward-only and read-only row set of data from a data source

Its CursorType property is adOpenForwardOnly

Its LockType property is adLockReadOnly

None of the above 

Which of these files is used for debugging an application?

demo.dll

demo.pdb

demo.res

Any of these can be used 

You have placed an OpenFileDialog control to let users select image files. How will you set the filter to display image files only? The name of the control is "ofdImage".

ofdImage.Filter = "Image Files|*.BMP;*.GIF;*.JPG"

ofdImage.Filter = "Images*;*.BMP|*.GIF|*.JPG"

ofdImage.Filter = "*.BMP;*.GIF;*.JPG| Images"

ofdImage.Filter = "Image Files|BMP.*;GIF.*;JPG.*" 

Which of the following is true for overriding?

The behavior of the derived class function is changed

The behavior and name of the derived class function are changed

The name of the derived class function is changed

The name and arguments of the derived class function are changed 

In which file can you define the "Process Model" attribute?

Web.config

Machine.config

In both files

In neither file 

You have to update some values in the database. Which method will you execute on a command object named "cmdUpdate"?

cmd.ExecuteScalar()

cmd.ExecuteNonQuery()

cmd.ExecuteReader()

cmd.Execute()

ExecuteXmlReader()

What is the value range of the SByte data type?

-127 through 127 (signed)

-128 through 127 (signed)

-127(signed) through 127 (signed)

-128 through 128 (signed)

Which of the following should you use to serialize instances of a class?

XMLSerializer

It depends on the situation

SoapFormatter

BinaryFormatter 

You declared an object variable named 'obj'. How will you check if it is initialized or not?

if (obj == null) then

if(obj) then

if(obj is nothing) then

if (IsNull(Obj)) then

You passed an array as an argument to the following function:

Public Function Modify(ByVal ar[] as Integer) as Boolean

What will happen to the original value of the array (ar), if the function modified the values?

The original value of the passed array will be modified permanently

The original value of the passed array will not be modified 

Delay signing allows a shared assembly to be signed with:

A private key at the initial stage

Private and public keys at the initial stage

A private key at a later stage

A public key at a later stage 

Which of the following is true for the 'instance' methods?

They must be invoked by calling the new constructor

Their instance is saved by the system for performance reasons

They can be invoked by using the class name followed by the method name

They are defined using the keyword 'instance'