Microsoft 070-503 : TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation

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

1. You are creating a distributed application by using Microsoft .NET Framework 3.5.
The application uses Windows Communication Foundation (WCF). The distributed application provides point-to-point security.
You need to ensure that the distributed application provides end-to-end security instead of point-to-point security.
Which binding mode should you use?

A) wsHttpBinding with Message security
B) wsHttpBinding with Transport security
C) netTcpBinding with Transport security
D) netNamedPipeBinding with Transport security

2. You are creating a Windows Communication Foundation application by using Microsoft .NET Framework 3.5.
You create a service that provides access to the intranet file server of your company. Users must be able to update and delete files from the server by using the service.
You write the following code segment.

You need to ensure that files can be updated or deleted only by users with the required privileges defined in the server's file system ACLs. What should you do?

A) Define the service behavior in the following manner.
<serviceAuthorization impersonateCallerForAllOperations="true" />
Decorate the Delete and Update methods of the IFileServer interface by using the following
attribute.
[OperationBehavior(Impersonation=ImpersonationOption.Alloraed)]
B) Define the service behavior in the following manner.
<serviceAuthorization impersonateCallerForAllOperations="true" />
C) Define the service behavior in the following manner.
<serviceAuthorization impersonateCallerForAllOperations="false" />
Decorate the Delete and Update methods of the FileServer class by using the following
attribute.
[OperationBehavior(Impersonation=ImpersonationOption.Required )]
D) Define the service behavior in the following manner.
<serviceAuthorization impersonateCallerForAllOperations="false" />
Decorate the Delete and Update methods of the IFileServer interface by using the following
attribute.
[OperationBehavior(Impersonation=ImpersonationOption.Required)]

3. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You want to use a built-in binding to support reliable sessions.
You need to create a service that uses SOAP to transfer messages between endpoints. The service must deliver the messages only once, and in the same order in which they were sent.
Which type of binding should you use?

A) BasicHttpBinding
B) WSDualHttpBinding
C) NetMsmqBinding
D) NetPeerTcpBinding

4. You are creating a client application by using Microsoft .NET Framework 3.5. The application will be accessible on the Internet.
You plan to use the wsHttpBinding binding by using HTTPS. The Windows Communication Foundation (WCF) service is hosted by a Windows service. You associate the HTTPS port of the WCF server with an X.509 certificate.
You need to ensure that the client application trusts and validates the certificate.
What should you do?

A) Derive a class from the System.IdentityModel.Selectors.X509CertificateValidator class.
Create an instance of the derived class on the server side.
Write the validation code in the public override void Validate(X509Certificate2 certificate) method.
B) Subscribe to the ServerCertificateValidationCallback event of the System.Net.ServicePointManager class.
Write the validation code in the boolValidate(object sender, X509Certificate cert, X509Chain chain. System.Net.Security.SslPolicyErrors error) event handler on the client side.
C) Derive a class from the System.IdentityModel.Selectors.X509CertificateValidator class.
Create an instance of the derived class on the client side.
Write the validation code in the public override void Validate(X509Certificate2 certificate) method.
D) Subscribe to the ServerCertificateValidationCallback event of the System.Net.ServicePointManager class.
Write the validation code in the boolValidate(object sender, X509Certificate cert, X509Chain chain. System.Net.Security .SslPolicyErrors error) event handler on the server side.

5. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. You create a class named Customer for the WCF service. The Customer class has properties named Id, Name, and BalanceDue.
You plan to convert the Customer class into a data contract.
You need to ensure that only the Id property and the Name property are passed to the client applications.
Which code segment should you use?

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

Solutions: