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| Section | Weight | Objectives |
|---|---|---|
| Consuming Services | 18% | - Configure client endpoints and bindings - Implement asynchronous calls - Handle communication exceptions - Create service proxies |
| Exposing and Configuring Services | 21% | - Configure service endpoints - Configure service hosting - Configure service behaviors - Configure bindings |
| Instrumenting and Administering Services | 11% | - Configure performance counters - Implement service throttling - Enable message logging - Implement service tracing |
| Securing Services | 18% | - Configure authentication - Configure authorization - Configure message security - Configure transport security |
| Creating Services | 19% | - Define message contracts - Define data contracts - Define service contracts - Process generic messages - Define operation contracts |
| Hosting and Managing Services | 13% | - Host services in managed applications - Host services in IIS/WAS - Create custom behaviors - Manage service instances and concurrency |
1. You are creating a Windows Communication Foundation (WCF) client application by using Microsoft .NET Framework 3.5.
The proxy generated for the WCF service results in the following code segment.
To implement a callback interface, you create the following class in the client application.
public class StoreCallback: IStoreCallback{ }
The client application receives notifications from the service through the callback interface.
You write the following code segment for the client application to use the generated proxy.
(Line numbers are included for reference only.)
02 client.CheckAvailableProducts();
You need to set up duplex communication between the client application and the WCF
service.
Which code segment should you insert at line 01?
A) Option D
B) Option A
C) Option C
D) Option B
2. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You write the following code segment to implement an operation contract. (Line numbers are included for reference only.)
Only the contents of the File.xml file are sent to the client application.
You need to ensure that the SOAP envelope generation is always disabled for messages that are sent to the client application.
Which line of code should you insert at line 04?
A) ver =HessageVersion.Soap11BSAddressing10
B) ver=OperationContext.Current.IncomingHessageVersion
C) ver = HessageVersion.Default
D) ver = HessageVersion.None
3. You create an application by using Microsoft Visual Studio .NET 2008 and the .NET Framework 3.5. The application exposes a Windows Communication Foundation (WCF) Web service. The Web service is consumed by third-party applications. You need to ensure that the WCF service provides interoperable and secure end-to-end communications. What should you do?
A) Use the wsHttpBinding binding along with the message-level security.
B) Use the basicHttpBinding binding along with the transport-level security.
C) Use the netTcpBinding binding along with the message-level security.
D) Use the netNamedPipeBinding binding along with the message-level and the transport-level securities.
4. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service contains the following code segment.
[ServiceContract] public interface IMathSrvc {
[OperationContract] void
AddNumbers(int num);
[OperationContract] int
ClearQ; }
You need to ensure that the service meets the following requirements: The service can call the AddNumbers operation multiple times. The AddNumbers operation must start a session on the initial call.
The service must call the Clear operation only if a session exists.
The service must not call other operations after it calls the Clear operation.
Which code segment should you use to replace the existing code segment?
A) [ServiceContractJpublic interface IMathSrvcj
[OperationContract(lsOneWay=true)] void
AddNumbers(int num); [OperationContract(lsTerminating=true)] int Clear0;}
B) [ServiceContractJpublic interface ImathSrvc]
[OperationContract(lsTerminating=false)] void
AddNumbers(int num); [OperationContract(lsTerminating=true)] int ClearQ;}
C) [ServiceContractJpublic interface IMathSrvcj
[OperationContract(lslnitiating=true, lsOneWay=true)J void AddNumbers(int num);
[OperationContract(lsTerminating=true)] int Clear();}
D) [ServiceContractJpublic interface ImathSrvc] [OperationContract] void
AddNumbers(int num);
[OperationContract(lslnitiating=false, lsTerminating=true)] int Clear();}
5. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5.
You create an instance of the ServerHost class. You plan to host the WCF service in a Windows service.
You need to link the lifetime of the WCF service to the lifetime of the Windows service.
Which three actions should you perform on the instance of the ServerHost class? (Each correct answer presents part of the solution. Choose three.)
A) Override the InitializeLifetimeService method.
B) Subscribe to the Faulted event.
C) Override the OnStop method.
D) Override the RequestAdditionalTime method.
E) Override the GetLifetimeService method.
F) Override the OnStart method.
Solutions:
| Question # 1 Answer: A | Question # 2 Answer: D | Question # 3 Answer: A | Question # 4 Answer: D | Question # 5 Answer: C,E,F |
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