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最新的 MCTS 70-513 免費考試真題:

1. You are developing a Windows Communication Foundation (WCF) service to provide an in-memory cache. The following code is part of your solution. (Line numbers are included for reference only.)
01 02 Public Interface IlnMemoryCacheService 03 04 <OperationContract()> 05 Function GetCachedItem( ByVal key As String) As String 06 07 <OperationContract() > 08 Sub CacheItem( ByVal key As String, ByVal item As String) 09 10 End Interface 11 12 <ServiceBehavior( InstanceContextMode:=InstanceContextHode.Single)> 13 Public Class CacheService 14 Implements IlnHemoryCacheService 15 16 Dim cache As Hashtatale - New Hashtable)> 17 18 Public Function GetCachedItem( ByVal key As String) As String mplements IInHemoryCacheService.GetCachedltem 19 20 Return cache (key) .ToStrlng() 21 22 End Function
23 24 Public Sub Cacheltem( ByVal key As String, ByVal item As String) Implements ilnMemoryCacheService.Cacheltem Then 25 26 If (cache.Contains(key) 27 cache.Remove(key) 28 End If 29 30 cache.Add(key, item) 31 32 End Sub
34 End Class
Users report that the cache is getting updated with cache changes of other users. You need to ensure that each user's cache is maintained and isolated from other users.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) At line 12, replace InstanceContextHode.Single with InstanceContextHode.PerSession.
B) At line 12, replace InstanceContextHode.Single with InstanceContextHode.PerCall.
C) Insert the following code at line 01. <ServiceContract(SessionHode:=SessionHode.Required)>
D) Insert the following code at line 01. <ServiceContract(SessionMode:=SessionHode.NotAllowed)>

2. You are developing a Windows Communication Foundation (WCF) service. The service needs to access out-of-process resources.
You need to ensure that the service accesses these resources on behalf of the originating caller.
What should you do?

A) Set the value of ServiceSecurityContext.Current.WindowsIdentity.ImpersonationLevel to TokenImpersonationLevel.Impersonation.
B) Set the value of ServiceSecurityContext.Current.WindowsIdentity.ImpersonationLevel to TokenImpersonationLevel.Delegation.
C) Set the PrincipalPermissionAttribute on the service contract and update the binding attribute in the endpoint element of the configuration file to wsHttpBinding.
D) Set the PrincipalPermissionAttribute on the service contract and update the bindingConfiguration attribute in the endpoint element of the configuration file to wsHttpBinding.

3. You are developing a client application that consumes a Windows Communication Foundation (WCF) service.
You use the svcutil.exe utility to create a proxy for the service. You use the svcutil.exe switches that generate asynchronous calls. GetFlight is a service operation that takes no parameters and returns a string. The GetFlightCallback method must be called when the service operation returns.
You create an instance of the client proxy with the following code.
Dim client As TravelServiceClient = New TravelServiceClient()
You need to ensure that a callback is received when the GetFlight operation is called asynchronously.
Which code segment should you use?

A) client.BeginGetFlight(AddressOf
GetFlightCallback, Nothing) client.GetFlight()
B) client.GetFlight()
client.BeginGetFlight(AddressOf GetFlightCallback, Nothing)
C) AddHandler client.GetFlightCompleted,
New EventHandler(Of GetFlightCompletedEventArgs)
(AddressOf GetFlightCallback)
client.GetFlightAsync()
D) Dim asyncResult As IAsyncResult = client.BeginGetFlight(
AddressOf GetFlightCallback, client)
client.EndGetFlight(asyncResult)

4. You are creating a Windows Communication Foundation (WCF) service that implements operations in a RESTful manner. You need to add a delete operation.
You implement the delete method as follows.
void DeleteItems(string id);
You need to configure WCF to call this method when the client calls the service with the HTTP DELETE operation.
What should you do?

A) Replace the return type with RemovedActivityAction.
B) Add the HttpDelete attribute to the operation.
C) Replace the string parameter with a RemovedActivityAction parameter.
D) Add the WebInvoke(UriTemplate = "/Items/{id}", Method="DELETE") attribute to the operation.

5. You are developing a Windows Communication Foundation (WCF) service. One of the service operations contains the following code.

You need to set a service behavior that prevents two or more threads from incrementing the counter variable at the same time.
Which code segment should you use to set the service behavior?

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

問題與答案：

問題 #1 答案： A,C

問題 #2 答案： B

問題 #3 答案： D

問題 #4 答案： D

問題 #5 答案： B