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

1. You are creating a client application that will call a Windows Communication Foundation service. The service was created by using Microsoft .NET Framework 3.5.
You write the following code segment.
[DataContract]
public class CreditCard {
private string cardNumber = 0; [DataMember] public string Name { get; set; } [DataMember] public string CardNumber { get { return cardNumber; } set { if (!IsValidCreditCardNumber(value)) { throw new ArgumentException("Invalid credit card number"); } cardNumber = value; } }
} You plan to share the validation logic between the client application and the WCF service.
You need to generate a client-side service proxy that includes the validation logic.
Which four tasks should you perform? (Each correct answer presents part of the solution. Choose four.)

A) In the Client project, use the Add Web Reference dialog box to reference the service.
B) Create a Class Library project for the DataContract classes.
C) In the Client project, use the Add Reference dialog box to add a project reference to the Service project.
D) In the Client project, use the Add Service Reference dialog box to reference the service.
E) In the Service project, add a reference to the Class Library project.
F) In the Client project, add a reference to the Class Library project.

2. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5. The service will authenticate the client applications by using Personal Information Cards. You write the following code segment. (Line numbers are included for reference only.)

You need to ensure that only those client applications that provide a valid e-mail address can execute the Update method. Which code segment should you insert at line 15?

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

3. You are creating a Windows Communication Foundation client application by using Microsoft .NET Framework 3.5.
You need to inspect the parameters on the client application.
Which three actions should you perform? (Each correct answer presents part of the solution. Choose three.)

A) Implement the ICIientMessagelnspector interface.
B) Insert a behavior before you call the ClientBase.Open method.
C) Insert a code segment that creates a behavior in the ICallContextlnitializer.BeforelnvokeO method.
D) Implement the lEndpointBehavior behavior to add the parameter inspector to the Dispatcher. DispatchOperation.Parameterlnspectors method.
E) Implement the IParameterlnspector interface.
F) Implement the lEndpointBehavior behavior to add the parameter inspector to the Dispatcher. ClientOperation.Parameterlnspectors method.

4. How do you ensure Clipboard content is available if Service or client application is restarted?

A) Increase session timeout to 60 minutes
B) Apply [DurableService] attribute to service and [DurableOperation] to each method.
C) Do a Copy() and Paste() to a local file, then when the service is restarted, read text from the local file.
D) Modify service to use [ServiceBehavior(InstanceContextMode=InstanceContextMode. Single)]

5. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You write the following code segment.

You need to ensure that the service commits the transaction only when the session is closed.
Which code segment should you use to implement the service?

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

Solutions: