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Microsoft 070-513 Exam Syllabus Topics:

Microsoft TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4 Sample Questions:

1. You have an existing Windows Communication Foundation (WCF) service.
You need to ensure that other services are notified when the service is started.
What should you do?

A) Add the following standard endpoint to the service.
<endpoint name="udpDiscoveryEndpoint"
kind="udpAnnouncementEndpoint" />
B) Add a service behavior with the following element.
<serviceDiscovery>
<announcementEndpoints>
<endpoint kind="udpDiscoveryEndpoint" />
</announcementEndpoints>
</serviceDiscovery>
C) Add the following standard endpoint to the service.
<endpoint name="udpAnnouncementEndpoint"
kind="udpDiscoveryEndpoint" />
D) Add a service behavior with the following element.
<serviceDiscovery>
<announcementEndpoints>
<endpoint kind="udpAnnouncementEndpoint" />
</announcementEndpoints>
</serviceDiscovery>

2. You are developing a Windows Communication Foundation (WCF) service that must be
discoverable.
You need to ensure that the ServiceHost instance supports multiple discovery versions.
What should you do?

A) Use the endpoint constructor without the DiscoveryVersion parameter.
Use a unique value for the Address property of each endpoint.
B) Specify a unique DiscoveryVersion parameter for each endpoint constructor.
Use a unique value for the Address property of each endpoint.
C) Specify a unique DiscoveryVersion parameter for each endpoint constructor.
Use the same value for the Address property of each endpoint.
D) Use the endpoint constructor without the DiscoveryVersion parameter.
Use the same value for the Address property of each endpoint.

3. A WCF service code is implemented as follows. (Line numbers are included for reference only.)
01 <ServiceContract()> 02 <ServiceBehavior( 03 InstanceContextMode:=InstanceContextMode.Single)> 04 Public Class CalculatorService 05 06 <OperationContract()> 07 Public Function Calculate(ByVal op1 As Double, 08 ByVal op As String, ByVal op2 As Double) As Double & 24 End Function 25 26 End Class
You need to decrease the response time of the service.
What are two possible ways to achieve this goal (Each correct answer presents a complete solution? Choose two.)

A) Require the clients use threads, the Parallel Task Library, or other mechanism to issue service calls in parallel.
B) Require the clients to use async operations when calling the service.
C) Change the service behavior to the following. <ServiceBehavior( InstanceContextMode:=InstanceContextMode.Single, ConcurrencyMode:=ConcurrencyMode.Multiple)>
D) Change the service behavior to the following. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerCall)>

4. A Windows Communication Foundation (WCF) service uses a list of application-defined
roles for operations.
These roles are stored in a database.
You need to authorize calls against the list of roles retrieved from the database.
Which service behavior should you use to authorize the calls?

A) <serviceAuthorization principalPermissionModes"None" roleProviderNames"SqlProvider" I>
B) <serviceAuthorization principalPermissionModez"None" roleProviderNames"SqlProvider" />
C) <serviceAuthorization principalPermissionMode="None" roleProviderNamee"SqlProvider" Is
D) <serviceAuthorization principalPermissionModez"None" roleProviderNamez'SqlProvider" />

5. A Windows Communication Foundation (WCF) solution uses the following contract to share a message across its clients.
(Line numbers are included for reference only.)
01 [ServiceContract]
02public interface ITeamMessageService
03{
04 [OperationContract]
05string GetMessage0;
07 [OperationContract]
08void PutMessage(string message);
09)
The code for the service class is as follows
10 public class TeamMessageService: ITeamMessageService
1 1{
12Guid key = GuicLNewGuidO;
1 3string message = "Today's Message":
1 4public string GetMessage()
i5{
16 return stringFormat("Message:{0} Key:{1}",
message, Key);
1n
1 9public void PutMessage(string message)
20{
2lthismessage = message;
22}
23)
The senvice is self-hosted. The hosting code is as follows.
24 ServiceHost host =
25BasicHttpBinding binding =
new BasicHttpBinding(BasicHttpSecuntyMode.None):
26 host AddServiceEndpoint(
HMyApplication lTeamMessageService, binding,
"http:/Ilocalhost: 12345w);
27 host Open0;)
You need to ensure that all clients calling GetMessage will retrieve the same string, even if the message is updated by clients calling PutMessage
What should you do?

A) Add the following attribute to the TeamMessageService class, before line 10.
[ServiceBehavior(lnstanceContextMode = lnstanceContextModePerSession)J Then
change the binding definition on the service at line 25, and on the client to the following
WSHttpBinding binding new
WSHttpBinding(SecurityModeNone);
binding ReliableSession. Enabled true;
B) Add the following attribute to the TeamMessageService class, before line 10.
[ServiceBehavior(lnstanceContextMode = lnstanceContextMode. Single)]
C) Pass a service instance to the instancing code in line 24, as follows.
ServiceHost host = new ServiceHost(new TeamMessageServiceO);
D) Redefine the message string in line 13, as follows
static string message = 'Today's Message":
Then change the implementation of PutMessage in lines 19-22 to the following
public void PutMessage(string message) { TeamMessageServicemessage message,
}

Solutions: