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試験番号：070-521 参考書勉強試験科目：「Upgrade: Transition Your MCPD Windows Developer 3.5, or Enterprise Application Developer 3.5, Skills to MCPD Windows Developer 4」
最近更新時間：2014-04-03
問題と解答：115
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NO.1 You are creating a Windows Communication Foundation (WCF) service based on WSHttpBinding.
New audit requirements dictate that callers must be authenticated on every call to ensure that their
credentials have not been revoked.
You need to ensure that the service will not cache the security request token.
What should you do?
A.Apply a ServiceBehavior attribute to the service implementation class with the InstanceContextMode
property set to Single.
B.In the message security configuration, change clientCredentialType from IssuedToken to UserName.
C.In the message security configuration, set establishSecurityContext to false.
D.At the end of every operation, call the SessionStateUtility.RaiseSessionEnd method.
Answer: C
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NO.2 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.3 </behaviors>
...
You need to configure the service to publish the service metadata.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)
A.Add the following XML segment between lines 10 and 11.
<endpoint?address=""
binding="mexHttpBinding"
contract="IMetadataExchange"
/>
B.Add the following XML segment between lines 10 and 11.
<endpoint?address=""
binding="basicHttpBinding"
contract="IMetadataExchange"
/>
C.Add the following XML segment between lines15 and 16.
<serviceDiscovery>
<announcementEndpoints>
<endpoint address=""/>
</announcementEndpoints>
</serviceDiscovery>
D.Add the following XML segment between lines 15 and 16
<serviceMetadata httpGetEnabled="true"/>
Answer: AD
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17.Four Windows Communication Foundation (WCF) services are hosted in Microsoft Internet
Information Services (IIS). No behavior configuration exists in the web.config file.
You need to configure the application so that every service and endpoint limits the number of concurrent
calls to 50 and the number of concurrent sessions to 25.
Which XML segment should you add to the system.serviceModel configuration section of the web.config
file?
A.<behaviors>
<serviceBehaviors>
<behavior name="*">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
B.<behaviors>
<serviceBehaviors>
<behavior name="default">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
C.<behaviors>
<serviceBehaviors>
<behavior name="">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
D.<behaviors>
<serviceBehaviors>
<behavior name="ALL">
<serviceThrottling maxConcurrentCalls="50" maxConcurrentSessions="25"/> </behavior>
</serviceBehaviors>
</behaviors>
Answer: C
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18.The endpoint of a Windows Communication Foundation (WCF) service uses basicHttpBinding for its
binding. Your company's policies have changed to require that messages not be sent in clear text.
You must ensure that all messages are encrypted when traveling across the network.
What should you do?
A.Set the ProtectionLevel property on the service contract and update the binding attribute in the endpoint
element of the configuration file to wsHttpBinding.
B.Set the ProtectionLevel property on the service contract and update the bindingConfiguration attribute
in the endpoint element of the configuration file to webHttpBinding.
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.
Answer: A
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NO.4 You are developing a Windows Communication Foundation (WCF) service that reads messages from
a public non-transactional MSMQ queue.
You need to configure the service to read messages from the failed-delivery queue.
Which URI should you specify in the endpoint configuration settings of the service?
A.net.msmq://localhost/msmq$;FailedMessages
B.net.msmq://localhost/msmq$;DeadLetter
C.net.msmq://localhost/system$;DeadXact
D.net.msmq://localhost/system$;DeadLetter
Answer: D
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NO.5 Your Windows Communication Foundation (WCF) client application uses HTTP to communicate
withthe service.
You need to enable message logging and include all security information such as tokens and nonces in
logged messages.
What should you do?
A.In the application configuration file, add the logKnownPii attribute to the message logging diagnostics
source and set the value of the attribute to true.
Generate the ContosoService class using the Add Service Reference wizard.
Add a reference to System.ServiceModel.Routing.dll.
Add the following code segment.
ContosoService client = new ContosoService();
SoapProcessingBehavior behavior = new SoapProcessingBehavior(); behavior.ProcessMessages = true;
client.Endpoint.Behaviors.Add(behavior);
B.In the application configuration file, add the following XML segment to the system.serviceModel
configuration section group.
<diagnostics>
<messageLogging logMessagesAtTransportLevel="true"
logEntireMessage="true" />
</diagnostics>
C.In the machine configuration file, add the following XML segment to the system.serviceModel
configuration section.
<machineSettings enableLoggingKnownPii="true" />
Generate the ContosoService class using the Add Service Reference wizard.
Add the following code segment.
ContosoService client = new ContosoService();
client.Endpoint.Behaviors.Add(new CallbackDebugBehavior(true));
D.In the machine configuration file, add the following XML segment to the system.serviceModel
configuration section.
<machineSettings enableLoggingKnownPii="true" />
In the application configuration file, add the logKnownPii attribute to the message logging diagnostics
source and set the value of the attribute to true.
In the application configuration file, add the following XML segment to the system.serviceModel
configuration section group.
<diagnostics>
<messageLogging logMessagesAtTransportLevel="true"/>
</diagnostics>
Answer: D
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NO.6 A Windows Communication Foundation (WCF) application uses a data contract that has several data
members.
You need the application to throw a SerializationException if any of the data members are not present
when a serialized instance of the data contract is deserialized.
What should you do?
A.Add the KnownType attribute to the data contract. Set a default value in each of the data member
declarations.
B.Add the KnownType attribute to the data contract. Set the Order property of each data member to
unique integer value.
C.Set the EmitDefaultValue property of each data member to false.
D.Set the IsRequired property of each data member to true.
Answer: D
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NO.7 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.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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