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Microsoft TS: Windows Communication Foundation velopment with Microsoft .NET Framework 4 Sample Questions:

1. A Windows Communication Foundation (WCF) service has a callback contract. You are developing a client application that will call this service.
You must ensure that the client application can interact with the WCF service.
What should you do?

A) On the client, create a proxy derived from DuplexClientBase(Of TChannel).
B) On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.
C) On the client, use GetCallbackChannel (Of T).
D) On the OperationContractAttribute, set the AsyncPattern property value to True.

2. You are creating a Windows Communication Foundation (WCF) service. The service endpoints change frequently.
On the service, you add a new ServiceDiscoveryBehavior to the Behaviors collection of the ServiceHost Description property.
You need to ensure that client applications can communicate with the service and discover changes to the service endpoints.
What should you do?

A) Use the DiscoveryProxy class and the EndpointDiscoveryMetadata class to set up the binding in the client application.
B) Use the FindCriteria class and the UdpDiscoveryEndpoint class to set up the binding in the client application.
C) Add a new AnnouncementClient to the Behaviors collection in the client application.
D) Add a new ServiceDiscoveryBehavior to the Behaviors collection in the client application.

3. You develop a Windows Communication Foundation (WCF) service. It is used exclusively as an intranet application and is currently unsecured.
You need to ensure that the service meets the following requirements:
The service now must be exposed as an Internet application.
The service must be secured at the transport level.
Impersonation and delegation cannot be enabled.
What should you use?

A) wsHttpBinding and Kerberos
B) wsHttpBinding and HTTPS
---
C) basicHttpBinding and HTTP
D) basicHttpBinding and Kerberos

4. You develop a Windows Communication Foundation (WCF) service that contains the following code segment. (Line numbers are included for reference only.)

You need to ensure that all service endpoints are available to client applications. Which code segment should you insert at line 04?

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

5. You are developing a Windows Communication Foundation (WCF) service.
You need to enable security auditing for all events.
What should you do?

A) Set the serviceAuthorizationAuditLevel setting to Success and the messageAuthenticationAuditLevel setting to Success.
B) Set the serviceAuthorizationAuditLevel setting to SuccessAndFailure and the messageAuthenticationAuditLevel setting to SuccessAndFailure.
C) Set the messageAuthenticationAuditLevel setting to Success and the auditLogLocation setting to Application.
D) Set the messageAuthenticationAuditLevel setting to SuccessAndFailure and the auditLogLocation setting to Security.

Solutions: