Microsoft TS Microsoft .NET Framework 2.0 Application Development Foundation Set 4

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Microsoft TS Microsoft .NET Framework 2.0 Application Development Foundation Set 4

Which event would you use to run a method immediately after serialization occurs?

OnSerializing ✘ OnDeserializing ✘ OnSerialized ✘ OnDeserialized ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You work as the application developer at Cert-Tech.com. Cert-Tech.com uses Visual Studio.Net 2005 as its application development platform. You use a Windows XP Professional client computer named Client01 as
your development computer.
You are developing a .Net Framework 2.0 application on Client01. You write the code shown below:
Public Class Shape
Private shapeName as String
Public Sub Shape(ByVal shapeName as String)
Me.shapename=shapeName
End Sub
Public Overridable Fuction GetName() As String
Return shapeName
End Function
Private Sub DrawShape()
'Additional code goes here
End Sub
End Class
You later decide to have the application compiled and registered for COM interoperability. The other developers on your team complaing that they are unable to create an instance of the Shape class in their COM applications. You are required to ensure that COM applications are able to create an instance of the Shape class.
What should you do?

The following code should be added to the Shape class:

Public Sub New()

End Sub ✘ The following ComVisible attribute to the Shape class: ✘ The definition of the GetName method should be modified as below:Public Function GetName() As String

Return shapename

End Function ✘ The follwoing ComVisible attribute should be added to each method of the Shape class: ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing an application that uses role-based security. The principal policy of the application domain is configured during startup with the following code:
AppDomain.CurrentDomain.SetPrincipalPolicy(PrincipalPolicy.WindowsPrincipal);
You need to restrict access to one of the methods in your application so that only members of the local
Administrators group can call the method.
Which attribute should you place on the method?

[PrincipalPermission

(SecurityAction.Demand, Name = @"BUILTIN\Administrators") ] ✘ [PrincipalPermission(SecurityAction.Demand, Role = @"BUILTIN\Administrators")

] ✘ [PrincipalPermission(SecurityAction.Assert, Name = @"BUILTIN\Administrators") ] ✘ [PrincipalPermission(SecurityAction.Assert, Role = @"BUILTIN\Administrators") ] ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You deploy several .NET-connected applications to a shared folder on your company network. Your applications require full trust to execute correctly. Users report that they receive security exceptions when they
attempt to run the applications on their computers. You need to ensure that the applications on the users computers run with full trust. What should you do?

Apply a string name to the applications by using the Strong Name tool (Sn.exe) ✘ Use the security settings of internet explorer to add the shared folder to the list of trusted sites ✘ Use the Code Access Security Policy tool (Caspol.exe) to add a new code group that has the full trustpermission set. The new code group must also contain a URL membership condition that specifies the URL

of the shared folder where your application reside ✘ Grant the full trust permission set to the Trusted Zone code group by using the Code Access Security PolicyTool (Caspol.exe) ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You are developing an application that runs by using the credentials of the end user. Only users who are members of the Administrator group get permission to run the application. You write the following security code
to protect sensitive data within the application.
bool isAdmin=false;
WindowsBuiltInRole role=WindowsBuiltInRole.Administrator;
......
if(!isAdmin)
throw new Exception("User not permitted");
You need to add a code segment to this security code to ensure that the application throws an exception if a user is not a member of the Administrator group.
Which code segment should you use?

WindowsPrincipal currentUser = (WindowsPrincipal)Thread.CurrentPrincipal; IsAdmin=

currentUser.IsInRole(role); ✘ WindowsIdentity currentUser = WindowsIdentity.GetCurrent(); foreach (IdentityReference grp incurrentUser.Groups) {

NTAccount grpAccount=((NTAccount)grp.Translate(typeof(NTAccount))); isAdmin=grp.Value.Equals(role);

if (isAdmin)

break;

} ✘ GenericPrincipal currentUser = (GenericPrincipal) Thread.CurrentPrincipal; IsAdmin = currentUser.IsInRole(role.ToString()); ✘ WindowsIdentity currentUser = (WindowsIdentity)Thread.CurrentPrincipal.Identity;

isAdmin=currentUser.Name.EndsWith("Administrator"); ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

You work as aplication developer at Cer-Tech.com. You have recently created an aplication that includes the code shown below.
You now need to invoke the GetFileContents method asynchronously.
You have to ensure that the code you use to invoke the GetFileContents method will continue to process other user instructions, and displays the results as soon as the GetFileContents method finishes processing.
What should you do?

Use the following code:

GetFileContentsDel delAsync = new GetFileContentsDel (GetFileContents); IAsyncResult result =

delAsync.BeginInvoke (null, null); while (!result.IsCompleted)

{

//Process other user instructions

}

string strFile - delAsync.EndInvoke (result); ✘ Use the following code:GetFileContentsDel delAsync = new GetFileContentsDel (GetFileContents); string strFile - delAsync.Invoke

(); ✘ Use the following code:string strFile - delAsync.Invoke (); ✘ Use the following code:GetFileContentsDel delAsync = new GetFileContentsDel (GetFileContents); IAsyncResult result =

delAsync.BeginInvoke (null, null); //Process other user instructions

string strFile - delAsync.EndInvoke (result); ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

Which methods allow COM components to be used in .NET applications? (Choose all that applay.)

Add a reference to the component throudh Microsoft Visual Studio 2005. Use the type Library Import tool (TlbImport.exe). Use the Regsvr32 tool. Ensure thet the application is registered, using the RegSvr tool if necessary. Then either add a reference toit from the COM tab of the Add Reference dialog box or use TblIpm.exe.

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

What types of objects derive from te MemberInfo class? (Chose all that applay.)

FieldInfo class MethodInfo class Assembly class Type class

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

When compressing data with the DeflateStream class, how do you specify a stream into which to write compressed data?

Set the BaseStream property with the destination stream, and set the CompressionMode property to

Compression. ✘ Specify the stream to write into the DeflateStream object is created (for example, in the constructor). ✘ Use the Write method of the DeflateStream class. ✘ Register for the BaseSream event of the DeflateStream class. ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

10.

You work as an application developer. You are currently in the process of creating an application that reads binary information from a file.
You need to ensure that the only the first kilobyte of data is retrieved.
Vhat should you do?

Use the following code: FileStream fs = new FileStream ("C:\\file.txt' FiloModo.Open) BufferedStream bs =

new BufferedStream (fs);

byte [ ] bytes = new byte [1023];

bs. Head (bytes, 0, bytes. Length) ;

bs. Close 0 ;

for (int i = 0; i < bytes, Length-1: i++)

Console, WriteLitie {"{0} : [!}", I, bytes [i]); ✘ Use the following code:FileStream fs = new FileStream ("C:\\file. txt", FileMode.Open); byte [ ] bytes = new byte [1023];

fs. Read (bytes, 0, bytes. Length);

fs. Close 0 ;

for 0tit i = 0; i < bytes. Length-1 ; L++)

Console. WriteLine (*"{0) : (1}", I, bytes [i]); ✘ Use the following code:FileStream fs = new FileStream ("C:\\file. txt", FileMode.Open); BufferedStream bs = new BufferedStream

(Is);

byte [ ] bytes = new byte [1023]:

bytes = bs. ReadAllBytes (0, 1023):

bs. Close () ;

for (int i = 0; i < bytes.Length-l; i++)

Console. WriteLine ("{0} : {1}", I, bytes [i]); ✘ Use the following code:FileStream fs = new FileStream ('CrWfile. txt", FileMode.Open):

BufferedStream bs = new BufferedStream (f s);

byte [ ] bytes = new byte [1023] ;

bs. Read (bytes) ;

bs. Close 0 ;

for (itit i = 0; i < bytes.Length-1; i++)

Console. WriteLine {"{0} : {1}", T, bytes [i]): ✔

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Answer & Solution

Answer: Option B

Solution:

It provides fallback for IE8.

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Microsoft TS Microsoft .NET Framework 2.0 Application Development Foundation Set 4

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