Study with 70-513 most valid questions & verified answers

You are developing a Windows Communication Foundation (WCF) service. One of the parameters used with the service operations is a security token. The security token is not sensitive. The monitoring software tracks security tokens and can read tokens in clear text only.
The company security policy requires that you validate all clear text data passed over the corporate network.
You need to ensure that the service verifies that the security token is not changed during transit.
What should you do?

• A. Implement ISecureConversationSession in the message contract class.
• B. For all the security-sensitive members, set the ProtectionLevel parameter of the MessageBodyMember or MessageHeader attribute to Sign.
• C. For all the security-sensitive members, set the ProtectionLevel parameter of the MessageBodyMember or MessageHeader attribute to EncryptAndSign.
• D. Implement IEndpointldentityProvider in the message contract class.

You are developing a Windows Communication Foundation (WCF) service that will be hosted in Microsoft Internet Information Services (IIS) 7.0.
The service must be hosted in an IIS application named Info. You need to enable this service to be hosted in IIS by changing the web.config file.
Which XML segment should you add to the web.config file

• A. < serviceHostingEnvironment >
  < transportConfigurationTypes >
  <add name=" Info.svc " transportConfigurationType =" FileNotRequired " />
  </ transportConfigurationTypes >
  </ serviceHostingEnvironment >
• B. < serviceHostingEnvironment >
  < serviceActivations >
  <add relativeAddress ="Info" service=" Info.svc " />
  </ serviceActivations >
  </ serviceHostingEnvironment >
• C. < serviceHostingEnvironment >
  < transportConfigurationTypes >
  <add name="Info" transportConfigurationType =" Info.svc " />
  </ transportConfigurationTypes >
  </ serviceHostingEnvironment >
• D. < serviceHostingEnvironment >
  < serviceActivations >
  <add relativeAddress =" Info.svc " service="Info" />
  </ serviceActivations >
  </ serviceHostingEnvironment >

You have a Windows Communication Foundation (WCF) service that uses a multicast protocol as a custom transport. The service implements the channel framework.
You need to choose a message exchange pattern for the transport.
What should you use?

• A. Request-Response by using the IRequestChannel interface for clients and the IReplyChannel interface for the service.
• B. Datagram by using the IOutputChannel interface for clients and the IInputChannel interface for the service.
• C. Duplex by using the IDuplexChannel interface for both clients and the service.
• D. Half-Duplex by using the IRequestChannel interface for clients and the IReplyChannel interface for the service.

An existing Windows Communication Foundation (WCF) service uses basicHttpBinding. You are releasing updates to the service and the client application.
You need to enable the client application to flow transactions to the service.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)

• A. Change to a custom binding that has the transactionFlow, textMessageEncoding, and httpTransport binding elements in this order.
• B. Change the binding to use basicHttpContextBinding.
• C. Change to a custom binding that has the httpTransport, textMessageEndcoding, and transactionFlow binding elements in this order.
• D. Change the binding to use wsHttpBinding.

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. ICommunicationObject
• B. IExtensibleDataObject
• C. IExtension(Of T)
• D. IExtensibleObject(Of T)