70-513 Real Simulator & Braindump Questions

Exam Code : 70-513
Exam Name : Microsoft TS: Windows Communication Foundation Development with Microsoft .NET Framework 4 Exam

Real Sheets 70-513 Questions

Question :
You are creating an application that consumes a Windows Communication Foundation (WCF) service. The service implements the IService contract. The client application contains the CallbackHandler class, which implements IServiceCallback. You need to ensure that a client proxy is created that can communicate with the service over a duplex channel. Which code segment should you use?

1. Dim handler = New CallbackHandler() Dim clientFactory = New DuplexChannelFactory(Of IService)( New WSHttpContextBinding() ) Dim client = clientFactory.CreateChannel( New InstanceContext(handler), New EndpointAddress ("•••"))
2. Dim handler = New CallbackHandler() Dim clientFactory = New DuplexChannelFactory( Of IService)( GetType(CallbackHandler), New USDualHttpBindingO ) Dim client = clientFactory.CreateChannel( New InstanceContext (handler) , New EndpointAddress ("•••") )
3. Dim handler - New CallbackHandler() Dim clientFactory = New DuplexChannelFactory(Of IService)( GetType(CallbackHandler), New HSDualHttpBindingO) Dim client = clientFactory.CreateChannel( New EndpointAddress ("•••") )
4. Dim handler = New CallbackHandler() Dim clientFactory = New DuplexChannelFactory(Of IService)( New WSHttpBinding()) Dim client = clientFactory.CreateChannel( New InstanceContext(handler), New EndpointAddress ("•••"))

Answer : B

Question :
A WCF service code is implemented as follows. (Line numbers are included for reference only.) 01 <ServiceContract()> 02 <ServiceBehavior( 03 InstanceContextMode:=InstanceContextMode.Single)> 04 Public Class CalculatorService 05 06 <OperationContract()> 07 Public Function Calculate(ByVal op1 As Double, 08 ByVal op As String, ByVal op2 As Double) As Double & 24 End Function 25 26 End Class You need to decrease the response time of the service. What are two possible ways to achieve this goal (Each correct answer presents a complete solution?Choose two.)

1. Change the service behavior to the following. <ServiceBehavior( InstanceContextMode:=InstanceContextMode.Single, ConcurrencyMode:=ConcurrencyMode.Multiple)>
2. Change the service behavior to the following. <ServiceBehavior(InstanceContextMode:=InstanceContextMode.PerCall)>
3. Require the clients use threads, the Parallel Task Library, or other mechanism to issue service calls in parallel.
4. Require the clients to use async operations when calling the service.

Answer : A, B

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