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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 D
C) Option C
D) Option A

2. You are developing a Windows Communication Foundation (WCF) service that contains the following operation contract.
[OperationContract]
CustomerNames GetCustomerNames();
The operation returns customer names.
You need to develop a definition for the operation contract that produces XML with the following structure.

Which code segment should you use?

A) [DataMember(IsRequired = false)]
public string[] Names;
}
B) [MessageBodyMember]
public string[] Names;
}
C) [DataContract]
public class CustomerNames
{
[DataMember]
public string[] Names;
}
D) [MessageContract(IsWrapped = false)]
public class CustomerNames
{
[MessageBodyMember]
public string[] Names;
}
E) [MessageContract(WrapperName = "")]
public class CustomerNames
{
F) [DataContract]
public class CustomerNames
{

3. You are developing a Windows Communication Foundation (WCF) service that reads messages from a public non-transactional MSMQ queue.
You need to configure the service to read messages from the failed-delivery queue.
Which URI should you specify in the endpoint configuration settings of the service?

A) net.msmq://localhost/system$;DeadXact
B) net.msmq://localhost/msmq$;DeadLetter
C) net.msmq://localhost/msmq$;FailedMessages
D) net.msmq://localhost/system$;DeadLetter

4. You are creating a Windows Communication Foundation (WCF) service that uses claims-based authorization. The following code retrieves the correct claim set.
var claims = ServiceSecurityContext.Current.
AuthorizationContext.ClaimSets[0];
You need to validate that the requesting client application has included a valid DNS value in the claim.
Which code segment should you use to retrieve the claim for validation?

A) claims.FindClaims(ClaimTypes.Dns, Rights.Identity) .FirstOrDefault();
B) claims.Equals(ClaimTypes.Dns);
C) claims.FindClaims(ClaimTypes.Dns, Rights.PossessProperty) .FirstOrDefault();
D) claims.ContainsClairo(Claim.CreateDnsClaim(ClaimTypes.Dns));

5. You are developing a Windows Communication Foundation (WCF) service that is used to check the status of orders placed by customers. The following code segment is part of your service. (Line numbers are included for reference only.)

You need to ensure that the service always listens at net.pipe://SupplyChainServer/Pipe. What should you do?

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

Solutions: