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Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation Sample Questions:

1. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You write the following code segment.

You need to ensure that concurrent calls are allowed on the service instance.
Which code segment should you insert at line 07?

A) [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple, ReleaseServiceInstanceOnTransactionComplete=true)]
B) [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Reentrant, ReleaseServiceInstanceOnTransactionComplete=true)]
C) [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Multiple, ReleaseServiceInstanceOnTransactionComplete=false)]
D) [ServiceBehavior(ConcurrencyMode=ConcurrencyMode.Reentrant, ReleaseServiceInstanceOnTransactionComplete=false)]

2. You are creating a distributed application by using Microsoft .NET Framework 3.5. You use Windows Communication Foundation (WCF) to create the application.
The distributed application contains client applications and a WCF service.
The client applications send e-mail address claims to the WCF service. The custom authorization manager of the service examines whether the claims are of the type "http://contoso.com/ClaimTypes/UserStatus".
You write the following code segment. (Line numbers are included for reference only.)

You need to map the claim types that are provided by the client applications to the claim
types that are expected by the custom authorization manager of the service. Which code segment should you insert at line 14?

A) Option A
B) Option D
C) Option C
D) Option B

3. How do you ensure Clipboard content is available if Service or client application is restarted?

A) Apply [DurableService] attribute to service and [DurableOperation] to each method.
B) Increase session timeout to 60 minutes
C) Modify service to use [ServiceBehavior(InstanceContextMode=InstanceContextMode. Single)]
D) Do a Copy() and Paste() to a local file, then when the service is restarted, read text from the local file.

4. You are creating a Windows Communication Foundation client application by using Microsoft .NET Framework 3.5.
You add the following code segment to a service contract.
[ServiceContract]
interface IDocumentService
{
[OperationContract]
int DeleteDocument(int id);
}
The DeleteDocument method in the service contract takes a long time to execute.
The client application stops responding until the method finishes execution.
You write the following code segment to create an instance of a service proxy in the client application.
(Line numbers are included for reference only.)
01 static void Main() 02 {
03 DocumentServiceClient client= new DocumentServiceClient();
05 }
06 static void ProcessDeleteDocument(IAsyncResult result)
07 {
06 ...
09 }
You need to ensure that the service methods are called asynchronously.
What should you do?

A) Insert the following code segment at line 04:
client.BeginDeleteDocument(20, ProcessDeleteDocument, client);
Insert the following code segment at line 06:
int count=(result.AsyncState as Documentserviceclient).EndDeleteDocument(null);
B) Insert the following code segment at line 04:
IAsyncresult result = client.BeginDeleteDocument(20, ProcessDeleteDocument, client);
int count=client.EndDeleteDocument(result);
Insert the following code segment at line 06:
result.AsyncWaitHandle.WaitOne();
C) Insert the following code segment at line 04:
client.BeginDeleteDocument(20, ProcessDeleteDocument, client);
Insert the following code segment at line 06:
result.AsyncWaitHandle.WaitOne();
int count=(result as Documentserviceclient).EndDeleteDocument(result)
D) Insert the following code segment at line 04:
client.BeginDeleteDocument(20, ProcessDeleteDocument, client);
Insert the following code segment at line 06:
int count=(result.AsyncState as Documentserviceclient).EndDeleteDocument(result);

5. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You write the following code segment. (Line numbers are included for reference only.)
01 <SetviceContract(SessionMode:=SessionMode.Required)> _
02 Public Interface lOrderManager 04 Sub CloseOrder()
05 End Interface
You need to decorate the operation as the method that closes the current session.
Which code segment should you insert at line 03?

A) <OperationContract(lsTerminating:=True)> _
B) <OperationContract()> _
<OperationBehavior(_
ReleaselnstanceMode:=ReleaselnstanceMode.AfterCall)>_
C) <OperationContract(lsTerminating:=False)> _
<OperationBehavior( _
ReleaselnstanceMode:=ReleaselnstanceMode.AfterCall>
D) <OperationContract(lslnitiating:=False)> _

Solutions: