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Part 1 – C#
QUESTION 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=”udpAnnouncementEndpoint”
kind=”udpDiscoveryEndpoint” />
B.    Add the following standard endpoint to the service.
<endpoint name=”udpDiscoveryEndpoint”
kind=”udpAnnouncementEndpoint” />
C.    Add a service behavior with the following element.
<serviceDiscovery>
<announcementEndpoints>
<endpoint kind=”udpDiscoveryEndpoint” />
</announcementEndpoints>
</serviceDiscovery>
D.    Add a service behavior with the following element.
<serviceDiscovery>
<announcementEndpoints>
<endpoint kind=”udpAnnouncementEndpoint” />
</announcementEndpoints>
</serviceDiscovery>

Answer: D
QUESTION 2
You are developing a Windows Communication Foundation (WCF) service named CalculatorService, which implements the ICalculatorService contract.
The service is configured to be discoverable through UDP.
CalculatorService contains multiple endpoints.
One of the endpoints is configured with the following behavior.

21

You need to log all the endpoint metadata information that is added by the service host.
Which code segment should you use?

22

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: A
QUESTION 3
You develop a Windows Communication Foundation (WCF) service.
You enable all performance counters and run multiple calls to the service.
The service must isolate session data for each user.
You need to monitor the instancing behavior used in the service.
Which performance counter should you monitor?

A.    ServiceModelService 4.0.0.0\Calls
B.    ServiceModelService 4.0.0.0\Instances
C.    ASP.NET State Service\State Server Sessions Active
D.    ASP.NET State Service\State Server Sessions Total

Answer: B
QUESTION 4
You develop a Windows Communication Foundation (WCF) service.
You name the service MovieService in the Movie namespace.
The service is hosted in Microsoft Internet Information Services (IIS).
You copy the assembly containing the service to the bin folder in the virtual directory path.
You need to set up the URI that is mapped to the service.
What should you do?

A.    Add the following code segment to the web.config file.
<serviceHostingEnvironment>
<serviceActivations>
<add relativeAddress=”./Movie” service=”Movie.MovieService” />
</serviceActivations>
</serviceHostingEnvironment>
B.    Add a Movie.svc file in the root of the virtual path with the following line.
<% @ServiceHost language=”C#” Service=”MovieService”>
C.    Add the following code segment to the web.config file.
<serviceHostingEnvironment>
<serviceActivations>
<add relativeAddress=”./Movie.svc” service=”Movie.MovieService” />
</serviceActivations>
</serviceHostingEnvirornnent>
D.    Add a Movie.svc file in the root of the virtual path with the following line.
<% @ServiceHost language=”C#” Service=”MovieService.svc” %>

Answer: B
QUESTION 5
You are creating a Window s Communication Foundation (WCF) service application.
The application needs to service many clients and requests simultaneously.
The application also needs to ensure subsequent individual client requests provide a stateful conversation.
You need to configure the service to support these requirements.
Which attribute should you add to the class that is implementing the service?

A.    [ServiceBehavior(lnstanceContextMode =
lnstanceContextMode.PerSession,
ConcurrencyMode = ConcurrencyMode.Single)]
B.    [ServiceBehavior(lnstanceContextMode =
lnstanceContextMode.PerCall,
ConcurrencyMode = ConcurrencyMode.Reentrant)]
C.    [ServiceBehavior(InstanceContextMode =
lnstanceContextMode.PerSession,
ConcurrencyMode = ConcurrencyMode.Multiple)]
D.    [ServiceBehavior(lnstanceContextMode =
lnstanceContextMode.PerCall,
ConcurrencyMode = ConcurrencyMode.Multiple)]

Answer: C
QUESTION 6
You are configuring services to be discoverable.
The services must be discoverable without relying on a central server.
Client applications that consume the services are on a network segment that is separate from the network segment that the services are located on.
A firewall blocks all TCP ports between the two network segments, but allows other protocols to pass through.
You need to ensure that the client applications can discover the services.
What should you do?

A.    Use ad-hoc discovery mode over HTTP.
B.    Use ad-hoc discovery mode over UDP.
C.    Use managed discovery mode over HTTP.
D.    Use managed discovery mode over UDP.

Answer: B
Explanation:
Managed discovery modes are incorrect, they require central server for discovery.
By default the .NET Framework contains support for Ad-Hoc discovery over the UDP protocol
QUESTION 7
Drag and Drop Question
You have a client application that uses an existing Windows Communication Foundation (WCF) service.
The client application contains a defined EndpointAddress object named endpointAddress.
A class named ServiceClient is generated by using the Svcutil tool to invoke the WCF service. Instances of the ServiceClient class are created as follows:

ServiceClient client = new ServiceClient(CreateBinding(), endpointAddress);

The client application must meet the following requirements:

– Optimize message-level security when transporting both text files and large files.
– Provide transport-level security by using the HTTPS protocol.

You need to create the code for the CreateBinding() method.
Which four code segments should you use in sequence? (To answer, move the appropriate four code segments from the list of code segments to the answer area and arrange them in the correct order.)

71

Answer:

72
QUESTION 8
You develop a Windows Communication Foundation (WCF) service.
It is used exclusively as an intranet application and is currently unsecured.
You need to ensure that the service meets the following requirements:

– The service now must be exposed as an Internet application.
– The service must be secured at the transport level.
– Impersonation and delegation cannot be enabled.

What should you use?

A.    wsHttpBinding and HTTPS
B.    basicHttpBinding and Kerberos
C.    basicHttpBinding and HTTP
D.    wsHttpBinding and Kerberos

Answer: A
QUESTION 9
You are developing a Windows Communication Foundation (WCF) service.
You enable logging in the configuration file.
The opening tag is defined as follows.

91

You need to ensure that logging is implemented so that only messages with SOAP headers are logged.
What should you add to the filters element of the application configuration file?

92

A.    Option A
B.    Option B
C.    Option C
D.    Option D

Answer: C
QUESTION 10
You are developing a Windows Service.
The Windows Service will host a Windows Communication Foundation (WCF) service.
The Windows Service class will inherit from ServiceBase.
You need to ensure that the WCF service starts when the Windows Service is restarted.
What should you do in the Windows Service class?

A.    Create a public method named Main.
Create a new ServiceHost in the Main method.
Override the OnShutdown method and close the ServiceHost.
B.    Override the OnStart method and create and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.
C.    Override the OnPowerEvent method and open a new ServiceHost.
Override the OnShutdown method and close the ServiceHost.
D.    Override the OnContinue method and open a new ServiceHost.
Override the OnStop method and close the ServiceHost.

Answer: B

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