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Microsoft 070-513 Exam Syllabus Topics:

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

1. 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 25 to the following code segment. DuplexChannelFactory<IGreetingService> factory = new DuplexChannelFactory<IGreetingService>( callbackContext, binding, address);
B) Add the following code segment after line 26. callbackContext.OutgoingChannels.Add((IDuplexChannel)greetingService);
C) Change line 26 to the following code segment. IGreetingService greetingService = factory.CreateChannel(callbackContext);
D) Add the following code segment after line 26. callbackContext.IncomingChannels.Add((IDuplexChannel)greetingService);

2. A client application calls a Windows Communication Foundation (WCF) service with a proxy class that was generated by Visual Studio.
The service binding was changed from wsHttpBinding to basicHttpBinding. The method signatures in the service contract are changed.
After these changes, the client application receives errors when calling methods on the service.
You need to ensure that the client can invoke methods on the service successfully.
What should you do?

A) Update the service reference.
B) Enable anonymous authentication for the service.
C) Update the configuration file to use basicHttpBinding.
D) Copy the configuration file elements under the <system.servicelviodel> element from the service back to the client.

3. You have a Windows Communication Foundation (WCF) service.
The service has issues with performance when it receives messages on a specific endpoint. The service must collect the minimum number of performance counters to diagnose the message issues.
You need to configure the service.
In the web.config file for the service, what should you do?

A) Enable the Windows Management Instrumentation (WMI) provider.
B) In the service configuration diagnostics section, set the value of the performancCounters property to All.
C) In the service configuration diagnostics section, set the value of the performanceCounters property to ServiceOnly.
D) Enable message logging for the endpoint.

4. You have a secured Windows Communication Foundation (WCF) service.
You need to track unsuccessful attempts to access the service.
What should you do?

A) Set the includeExceptionDetailslnFaults attribute of the serviceDebug behavior to true
B) Set the messageAuthenticationAuditLevel attribute of the serviceSecurityAudit behavior to Failure.
C) Set the authorizationManagerType attribute of the serviceAuthorization behavior to Message
D) Set the Mode attribute of the security configuration element to Message

5. A Windows Communication Foundation (WCF) service is responsible for transmitting XML documents between systems.
The service has the following requirements:
- It must minimize the transmission size by attaching the XML document as is without using escape characters or base64 encoding. - It must interoperate with systems that use SOAP but are not built on the .NET platform.
You need to configure the service to support these requirements.
Which message encoding should you use?

A) Text message encoding with message version set to none
B) Text message encoding with message version set to SOAP 1.2
C) MTOM (Message Transmission Optimization Mechanism) message encoding
D) Binary message encoding

Solutions: