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Code d'Examen: 070-521
Nom d'Examen: Microsoft (Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4)
Questions et réponses: 115 Q&As
Code d'Examen: 074-697
Nom d'Examen: Microsoft (OEM Preinstallation)
Questions et réponses: 98 Q&As
Code d'Examen: 070-243
Nom d'Examen: Microsoft (Administering and Deploying System Center 2012 Configuration Manager)
Questions et réponses: 80 Q&As
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NO.1 A Windows Communication Foundation (WCF) client uses the following service contract. (Line
numbers are included for reference only.)
01 [ServiceContract]
02 public interface IService
03 {
04 [OperationContract]
05 string Operation1();
06 [OperationContract]
07 string Operation2();
08 }
You need to ensure that all calls to Operation1 and Operation2 from the client are encrypted and signed.
What should you do?
A.Set the ProtectionLevel property in line 01 to EncryptAndSign.
B.Set the ProtectionLevel property in line 04 and line 06 to Sign.
C.Add a SecurityCriticalAttribute for each operation.
D.Add a SecuritySafeCriticalAttribute for each operation.
Answer: A
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NO.2 You are creating a Windows Communication Foundation (WCF) service. You do not want to expose the
internal implementation at the service layer.
You need to expose the following class as a service named Arithmetic with an operation named Sum.
public class Calculator
{
public int Add(int x, int y)
{
}
}
Which code segment should you use?
A.[ServiceContract(Namespace="Arithmetic")]
public class Calculator
{
[OperationContract(Action="Sum")]
public int Add(int x, int y)
{
...
}
}
B.[ServiceContract(ConfigurationName="Arithmetic")]
public class Calculator
{
[OperationContract(Action="Sum")]
public int Add(int x, int y)
{
...
}
}
C.[ServiceContract(Name="Arithmetic")]
public class Calculator
{
[OperationContract(Name="Sum")]
public int Add(int x, int y)
{
...
}
}
D.[ServiceContract(Name="Arithmetic")]
public class Calculator
{
[OperationContract(ReplyAction="Sum")]
public int Add(int x, int y)
{
...
}
}
Answer: C
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NO.3 A Windows Communication Foundation (WCF) service is responsible for transmitting XML documents
between systems. The service has the following requirements:
It must minimize the transmission size by attaching the XML document as is without using escape
characters or base64 encoding.
It must interoperate with systems that use SOAP but are not built on the .NET platform.
You need to configure the service to support these requirements.
Which message encoding should you use?
A.Binary message encoding
B.MTOM (Message Transmission Optimization Mechanism) message encoding
C.Text message encoding with message version set to none
D.Text message encoding with message version set to SOAP 1.2
Answer: B
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NO.4 A WCF service code is implemented as follows. (Line numbers are included for reference only.)
01 [ServiceContract]
02 [ServiceBehavior(InstanceContextMode =
03 InstanceContextMode.Single)]
04 public class CalculatorService
05 {
06 [OperationContract]
07 public double Calculate(double op1, string op, double op2)
08 {
...
24 }
25 }
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.)
A.Change the service behavior to the following.
[ServiceBehavior(
InstanceContextMode = InstanceContextMode.Single,
ConcurrencyMode = ConcurrencyMode.Multiple)]
B.Change the service behavior to the following.
[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerCall)]
C.Require the clients use threads, the Parallel Task Library, or other mechanism to issue service calls in
parallel.
D.Require the clients to use async operations when calling the service.
Answer: AB
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NO.5 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
EncryptAndSign.
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.
Answer: B
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NO.6 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.Add the WebInvoke(UriTemplate = "/Items/{id}", Method="DELETE") attribute to the operation.
B.Add the HttpDelete attribute to the operation.
C.Replace the string parameter with a RemovedActivityAction parameter.
D.Replace the return type with RemovedActivityAction.
Answer: A
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NO.7 You are adding a Windows Communication Foundation (WCF) service to an existing application. The
application is configured as follows. (Line numbers are included for reference only.)
01?<configuration>
02 <system.serviceModel>
03 <services>
04 <service name="Contoso.Sales.StockService"
05 behaviorConfiguration="MetadataBehavior">
06 <host>
07 <baseAddresses>
08 <add
baseAddress="http://contoso.com:8080/StockService" />
09 </baseAddresses>
10 </host>
11 </service>
12 </services>
13 <behaviors>
14 <serviceBehaviors>
15 <behavior name="MetadataBehavior">
16 </behavior>
NO.8 You are creating a Windows Communication Foundation (WCF) service that is implemented as follows.
(Line numbers are included for reference only.)
01 [ServiceContract]
02 [ServiceBehavior(IncludeExceptionDetailsInFaults = true)]
03 public class OrderService
04 {
05 [OperationContract]
06 public void SubmitOrder(Order anOrder)
07 {
08 try
09 {
10 ...
11 }
12 catch(DivideByZeroException ex)
13 {
15 }
16 }
17 }
You need to ensure that the stack trace details of the exception are not included in the error information
sent to the client.
What should you do?
A.Replace line 14 with the following line.
throw;
B.Replace line 14 with the following line.
throw new FaultException<Order>(anOrder, ex.ToString());
C.After line 05, add the following line.
[FaultContract(typeof(FaultException<Order>))]
Replace line 14 with the following line.
throw ex;
D.After line 05, add the following line.
[FaultContract(typeof(FaultException<Order>))]
Replace line 14 with the following line.
throw new FaultException<Order>(anOrder, "Divide by zero exception");
Answer: D
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