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Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation Sample Questions:

1. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. You configure a binding to enable streaming. You need to ensure that the client application is able to stream large XML files to the WCF service.
Which operation contract should you create?

A) [OperationContractjvoid UploadFile(byte[] xmlData);
B) [OperationContract]void UploadFile(StreamWriter xmlData);
C) [OperationContract]void UploadFile(Stream xmlData);
D) [OperationContract]void UploadFile(XmlWriter xmlData);

2. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You need to insert an additional header in a response message.
What should you do?

A) Implement the AfterReceiveRequest method of the IDispatchMessagelnspector interface.
B) Implement the AfterCall method of the IParameterlnspector interface.
C) Implement the BeforeSendReply method of the IDispatchMessagelnspector interface.
D) Implement the BeforeSendRequest method of the IClientMessagelnspector interface.

3. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You need to configure a single service endpoint with the following logical and physical addresses:
Which configuration setting should you use?

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

4. You create a stateless, thread-safe service by using Microsoft .NET Framework 3.5.
You use the Windows Communication Foundation model to create the service. Load testing reveals that the service does not scale above 1,000 concurrent users. You discover that each call to the service instantiates a new service instance. You also discover that these service instances are expensive to create. You need to ensure that 5,000 concurrent users can access the service.
Which code segment should you use?

A) <ServiceBehavior(_
lnstanceContextMode:=lnstanceContextMode.Single, _ConcurrencyMode:=ConcurrencyMode.Reentrant)> _
B) <ServiceBehavior(_ InstanceContextMode:=lnstanceContextMode.PerCall, _ConcurrencyMode:=ConcurrencyMode.Reentrant)> _
C) <ServiceBehavior(_ InstanceContextMode:=lnstanceContextMode.PerCall, _ConcurrencyMode:=ConcurrencyMode.Multiple)> _
D) <ServiceBehavior(_ lnstanceContextMode:=lnstanceContextMode.Single, _ConcurrencyMode:=ConcurrencyMode.Multiple)> _

5. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You write the following code segment to define the service. (Line numbers are included for reference only.)

You need to set the ServiceContract attribute for the transaction behavior of the service. Which code segment should you insert at line 01?

A) <ServiceContract(SessionMode:=SessionMode.Allowed)> _
B) <ServiceContract(SessionMode:=SessionMode.Required)> _
C) <ServiceContract(SessionMode:=SessionMode.NotAllowed, _ ProtectionLevel:=ProtectionLevel.EncryptAndSign)> _
D) <ServiceContract(SessionMode:=SessionMode.Allowed, _ ProtectionLevel:=ProtectionLevel.EncryptAndSign)> _

Solutions: