Microsoft 070-513 : TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4

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

1. You are developing a Windows Communication Foundation (WCF) service that returns location information for authorized law enforcement agencies. The service contract is as follows.
[ServiceContract]
public interface IMappingService
{
[OperationContract]
long[] GetLocationCoordinates(String cityNaroe);
[OperationContract]
long[] GetLocationOfCitizen(String ssn) ;
}
Users are authenticated and impersonated. The system uses ASP.NET roles. The members of law enforcement are members of the LawEnforcement role.
You need to ensure that only members of the LawEnforcement role can call these methods.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) At the beginning of each method, enumerate each ClaimSet in a new WindowsClaimSet. Use the FindClaims method to locate a claim type named Role with a right named LawEnforcement.
B) Add a PrincipalPermissionAttribute to each method that should be available only to members of law enforcement. Set its SecurityAction to Demand and set the role equal to LawEnforcement.
C) Create a GenericPrincipal specifying Thread.CurrentPrincipal.Identity as the IldentityParameter and LawEnforcement as the only value for the Roles parameter.
D) Use the CurrentPrincipal property of the thread. Call the IsInRole method specifying LawEnforcement as a parameter.

2. 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 to use async operations when calling the service.
B) Require the clients use threads, the Parallel Task Library, or other mechanism to issue service calls in parallel.
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)>

3. You have a Windows Communication Foundation (WCF) service that accepts the following message contract.

You need to ensure that the client sends a SOAP body that is accepted by the service.

A) <Ticket xmlns="http://www.movietheater.com"> <ShowTime
xmlns="http : //www.movietheater . com">
2010-07-05T00:51:10.0999304-05:00
</ShowTime>
<ReservationName xmlns="http://www.movietheater.com" />
<NumberOfSeats
xmlns="http://www.movietheater.com">
</NumberOfSeats>
</Ticket>
B) <Ticket xmlns="http://wwv.movies.com">
<ShowTime
xmlns-"http://www.movietheatec.com">
2010-07-05TOO:51:10.0999304-05:00
</ShowTime>
<Number Of Seats
xmlns="http://www.movietheater.com"> 0
</NumbecOfSeats>
<ReservationName xmlns""http://www.movietheotec.com" />
</Ticket>
C) <Ticket xmlns="http://www.movies. com">
<NumberOfSeats
xmlns="http : //www.movietheater . com">
</NumberOfSeats>
<ReservationName xmlns="http://www.movietheater .com" />
<ShowTime
xmlns="http://www.movietheater.com">
2010-07-05T00:SI:10.0999304-05:00
</ShowTime>
</Ticket>
D) <Ticket xmlns="http://www. movietheatec.com">
<ShowTime
xmlns-"http://www.movietheater.com">
2010-07-05TOO:51:10.0999304-05:00
</ShowTime>
<NumberOfSeats
xmlns="http://wwv.movietheatec.com"> 0
</NumberOfSeats>
<ReservationName
xmlns="http://www.movletheatec.com" />
</Ticket>

4. You are developing a windows Communication Foundation (WCF) service that will be hosted in Microsoft Intemnet Information Services (IIS) 7.0.
The service must be hosted in an lIs application named Info. You need to enable this senvice to be hosted in llS by changing the web.config file
Which XML segment should you add to the web.config file?

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

5. A Windows Communication Foundation (WCF) solution uses the following contracts. (Line numbers are included for reference only.)
01 [ServiceContract(CallbackContract = typeof(INameService))]
02 public interface IGreetingService
03 {
04 [OperationContract]
05 string GetMessage();
06 }
08 [ServiceContract]
09 public interface INameService
10 {
11 [OperationContract]
12 string GetName();
13 }
When the client calls GetMessage on the service interface, the service calls GetName on the client callback. In the client, the class NameService implements the callback contract.
The client channel is created as follows.
22 In stanceContext callbackContext =
new InstanceContext(new NameService("client"));
25 DuplexChannelFactory<IGreetingService> factory =
new DuplexChannelFactory<IGreetingService>(
typeof(NameService), binding, address);
26 IGreetingService greetingService = factory.CreateChannel();
You need to ensure that the service callback is processed by the instance of NameService.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

A) Change line 26 to the following code segment. IGreetingService greetingService = factory.CreateChannel(callbackContext);
B) Add the following code segment after line 26. callbackContext.OutgoingChannels.Add((IDuplexChannel)greetingService);
C) Add the following code segment after line 26. callbackContext.IncomingChannels.Add((IDuplexChannel)greetingService);
D) Change line 25 to the following code segment. DuplexChannelFactory<IGreetingService> factory = new DuplexChannelFactory<IGreetingService>( callbackContext, binding, address);

Solutions: