更多"You are debugging a Windows Communi"的相关试题:
[单项选择] You are modifying a Windows Communication Foundation (WCF) service that allows customers to update financial data. The service currently requires a transaction from the client application and is working correctly. The service contract is defined as follows. (Line numbers are included for reference only.) 01 [ServiceContract（ ）] 02 public interface IDataUpdate 03 { 04 [OperationContract（ ）] 05 [TransactionFlow(TransactionFlowOption.Mandatory)] 06 void Update(string accountNumber, double amount); 07 08 } 09 10 public class UpdateService : IDataUpdate 11 { 12 13 [OperationBehavior(TransactionScopeRequired=true, TransactionAutoComplete=true)] 14 public void Update(string accountNumber, double amount) 15 { 16 try 17 { 18 ... 19 } 20 catch(Exception ex) 21 { 22 ... 23 } 24 } 25 }The service must be modified so that client applications do not need to initiate a transaction when calling the operation. The service must use the client application’s transaction if one is available. Otherwise it must use its own transaction.You need to ensure that the service operation is always executed within a transaction. What should you do?（）
A. Replace line 05 with the following code. [TransactionFlow(TransactionFlowOption.NotAllowed)]
B. Replace line 13 with the following code. [OperationBehavior(TransactionScopeRequired=false, TransactionAutoComplete=true)]
C. Replace line 05 with the following code. [TransactionFlow(TransactionFlowOption.Allowed)]
D. Replace line 13 with the following code. [OperationBehavior(TransactionScopeRequired=false, TransactionAutoComplete=false)]
[单项选择]You are consuming a Windows Communication Foundation (WCF) service in an ASP. NET Web application.The service interface is defined as follows:[ServiceContract]public interface ICatalog{ [OperationContract] [WebGet(UriTemplate="/Catalog/Items/{id}", ResponseFormat=WebMessageFormat.Json)] string RetrieveItemDescription(int id); } The service is hosted at Catalogsvc.You need to call the service using jQuery to retrieve the description of an item as indicated by a variable named itemId. Which code segment should you use?（）
A. $get(String.format("/Catalogsvc/Catalog/Items/id{0}", itemId) null, function (data) { ... }, javascript");
B. $get(String.format("/Catalogsvc/Catalog/Items/{0}", itemId), null, function (data) { ... }, "json");
C. $get(String.format("/Catalogsvc/Catalog/Items/{0}", itemld), null, function (data) { ... }, "xml");
D. $get(String.format("/Catalogsvc/Catalog/Items/id{0}", itemld), null, function (data) { ... }, "json");
[单项选择]You are developing a Windows Presentation Foundation (WPF) application.You need to display HTML content from a Web page on the WPF form. What should you do?（）
A. Add a FlowDocumentReader control to the design surface. Then create a FlowDocument control.
B. Add a DocumentViewer control to the design surface. Then create a FixedDocument control.
C. Add a WebBrowser control to the design surface. Then use the Navigate method to navigate the URI object.
D. Add a ContentControl control to the design surface. Then reference a WebClient object to return an HTML string.
[单项选择]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 OperationContractAttribute， set the AsyncPattern property value to True.
B. On the OperationContractAttribute， set the ReplyAction property value to the endpoint address of the client. For interactive and self-paced preparation of exam 70-513， try our practice exams. Practice exams also include self assessment and reporting features!
C. On the client， create a proxy derived from DuplexClientBase（Of TChannel）.
D. On the client， use GetCallbackChannel（Of T）.
[单项选择]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 TokenlmpersonationLevel.Impersonation
B. Set the value of ServiceSecurityContext.Current.Windowsldentity.ImpersonationLevel to TokenlmpersonationLevel.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 PnncipalPermissionAttribute on the service contract and update the bindingConfiguration attribute in the endpoint element of the configuration file to wsHttpBinding
[单项选择]You are creating a Windows Communication Foundation (WCF) service to process orders.The data contract for the order is defined as follows:[DataContract]public class Order{ [DataMember] public string CardHolderName { get; set; } [DataMember] public string CreditCardNumber { get; set; }}You have the following requirements: Enable the transmission of the contents of Order from the clients to the service. Ensure that the contents of CreditCardNumber are not sent across the network in clear text. Ensure that the contents of CreditCardNumber are accessible by the service to process the order.You need to implement the service to meet these requirements. What should you do?（）
A. Add a DataProtectionPermission attribute to the CreditCardNumber property and set the ProtectData property to true.
B. Convert the DataContract to a MessageContract and set the ProtectionLevel property to SignAndEncrypt.
C. Change the data type of CreditCardNumber from string to SecureString.
D. Implement the CreditCardNumber property getter and setter In the setter, run the value of the CreditCardNumber through the MD5CryptoServiceProvider class TransformBlock method.
