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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. You enable message logging, trace listeners, activity propagation, and tracing on the trace sources.
You have the following code segment in the client application. (Line numbers are included for reference only.)

You encounter errors when your client application consumes the service.
You need to ensure that your client application can correlate tracing information with the service.
Which code segment should you add at line 04?

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

2. You are hosting a Windows Communication Foundation (WCF) service at http://www.contoso.com for a law enforcement agency. The agency adds operations to support sending biometric fingerprint data via non-buffered streaming. The service data is not routed between intermediaries.
The WCF binding you are using by default does not support encryption.
You need to ensure that fingerprint data is not disclosed when it is passed over the network.
What should you do?

A) Use basicHttpBinding with message security to https://www.contoso.com.
B) Use wsHttpBinding over transport security at http://www.contoso.com.
C) Use wsHttpBinding over message security at https://www.contoso.com.
D) Use basicHttpBinding over transport security at https://www.contoso.com.

3. You are developing a client that sends several types of SOAP messages to a Windows Communication Foundation (WCF) service method named PostData.
PostData is currently defined as follows.
[OperationContract]
void PostData(Order data);
You need to modify PostData so that it can receive any SOAP message.
Which code segment should you use?

A) [OperationContract] void PostData(Message data);
B) [OperationContract] void PostData(BodyWriter data);
C) [OperationContract(IsOneWay = true, Action = "*", ReplyAction = "*")] void PostData(Order data);
D) [OperationContract(IsOneWay = true, Action = "*", ReplyAction = "*")] void PostData(BodyWriter data);

4. You are developing a data contract for a Windows Communication Foundation (WCF) service.
The data in the data contract must participate in round trips. Strict schema validity is not required.
You need to ensure that the contract is forward-compatible and allows new data members to be added to it.
Which interface should you implement in the data contract class?

A) IExtension(Of T)
B) IExtensibleObject(Of T)
C) ICommunicationObject
D) IExtensibleDataObject

5. You have an existing Windows Communication Foundation (WCF) service that exposes a service contract over HTTP using explicit binding configuration.
You need to expose that contract over HTTP and TCP.
What should you do?

A) Add an endpoint behavior named netTcpBehavior to the existing endpoint.
B) Add a binding configuration to the existing endpoint named netTcpBinding.
C) Add an endpoint configured with a netTcpBinding.
D) Add a net.tcp base address to the host.

Solutions: