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Exam Code: 70-513
Exam Name: TS: Windows Communication Foundation Development with Microsoft .NET Framework 4
Certification Provider: Microsoft
Corresponding Certifications: MCPD, MCPD: Web Developer 4, MCPD: Windows Developer 4, MCTS, MCTS: Microsoft .NET Framework 4, Service Communication Applications
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QUESTION 31
You are developing a Windows Communication Foundation (WCF) service.
One of the parameters used with the service operations is a security token.
The security token is not sensitive.
The monitoring software tracks security tokens and can read tokens in clear text only.
The company security policy requires that you validate all clear text data passed over the corporate network.
You need to ensure that the service verifies that the security token is not changed during transit.
What should you do?
A. For all the security-sensitive members, set the ProtectionLevel parameter of the
MessageBodyMember or MessageHeader attribute to EncryptAndSign.
B. Implement IEndpointldentityProvider in the message contract class.
C. Implement ISecureConversationSession in the message contract class.
D. For all the security-sensitive members, set the ProtectionLevel parameter of the
MessageBodyMember or MessageHeader attribute to Sign.
Answer: D
QUESTION 32
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. string oid Deleteltems(string id);
You need to configi.re WCF to ci this method when the client calls the service with the HTTP DRETE operation
What should you do?
A. Add the Weblnvoke(UriTemplate = “/Items/(idy,
Method=”DELETE”) attribute to the operation
B. Add the HttpDelete tribute to the operation
C. Replace the sting parameter with a RemovedActivityAction parameter
D. Replace the return type with RemovedActivityktion.
Answer: A
QUESTION 33
You develop a Windows Communication Foundation (WCF) RESTful service that provides media streaming services.
The service includes the following code. (Line numbers are included for reference only.)
The service must return an XML response.
You need to apply the correct attribute to AddMediaTitle method.
Which code segment should you insert at line 05?
A. [WebInvolce(ResponseFormat = WebMessageFormat.Xml, BodyStyle =
WebMessageBodyStyle.Wrapped)]
B. [WebInvoice (ResponseFormat = WebMessageFormat.Xml, BodyStyle =
WebMessageBodyStyle .Bare) ]
C. [WebInvolce (Method= “POST”) ]
D. [WebInvoice]
Answer: A
QUESTION 34
An existing Windows Communication Foundation (WCF) service uses basicHttpBinding.
You are releasing updates to the service and the client application.
You need to enable the client application to flow transactions to the service.
What are two possible ways to achieve this goal? (Each correct answer presents a complete solution. Choose two.)
A. Change to a custom binding that has the httpTransport, textMessageEndcoding, and
transactionFlow binding elements in this order.
B. Change to a custom binding that has the transactionFlow, textMessageEncoding, and
httpTransport binding elements in this order.
C. Change the binding to use wsHttpBinding.
D. Change the binding to use basicHttpContextBinding.
Answer: BC
QUESTION 35
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:
var client = new TranvelServiceClient();
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(GetFlightCallback, null);
client.GetFlight();
B. client.GetFlight();
client.BeginGetFlight(GetFlightCallback, null);
C. client.GetFlightCompleted +=
new EventHandler<GetFlightCompletedEventArgs>(
GetFlightCallback);
client.GetFlightAsync();
D. IAsyncResult asyncResult = client.BeginGetFlight(
GetFlightCallback, client);
client.EndGetFlight(asyncResult);
Answer: C
QUESTION 36
You are developing a Windows Communication Foundation (WCF) service to provide an in-memory cache for many Web applications.
The service contract is defined as follows. (Line numbers are included for reference only.)
You need to ensure that all users share the cache.
Which code segment should you insert at line 07?
A. [ServiceBehavior(TransactionIsolationLevel =
IsolationLevel.RepeatableRead)]
B. [ServiceBehavior(InstanceContextMode =
InstanceContextMode.Single)]
C. [ServiceBehavior(InstanceContextMode =
InstanceContextMode.PerSession)]
D. [ServiceBehavior(TransactionIsolationLevel =
IsolationLevel.ReadComitted)]
Answer: B
QUESTION 37
A Windows Communication Foundation (WCF) solution exposes the following service over a TCP binding.(Line numbers are included for reference only.)
01 [ServiceContract]
02 [ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple)]
03 public class DataAccessService
04 {
05 [OperationContract]
06 public void PutMessage(string message)
07 {
08 MessageDatabase.PutMessage(message);
09 }
10 [OperationContract]
11 pubic string[] SearchMessages(string search)
12 {
13 return MessageDatabase.SearchMessages(search);
14 }
15 }
MessageDatabase supports a limited number of concurrent executions of its methods.
You need to change the service to allow up to the maximum number of executions of the methods of MessageDatabase.
This should be implemented without preventing customers from connecting to the service.
What should you do?
A. Change the service behavior as follows.
[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Multiple,
InstanceContextMode = InstanceContextMode.Single)]
B. Change the service behavior as follows.
[ServiceBehavior(ConcurrencyMode = ConcurrencyMode.Single,
InstanceContextMode = InstanceContextMode.PerSession)]
C. Add a throttling behavior to the service, and configure the maxConcurrentCalls.
D. Add a throttling behavior to the service, and configure the maxConcurrentSessions.
Answer: C
QUESTION 38
You are developing a Windows Communication Foundation (WCF) service.
You need to enable security auditing for all events.
What should you do?
A. Set the serviceAuthorizationAuditLevel setting to Success and the
messageAuthenticationAuditLevel setting to Success.
B. Set the messageAuthenticationAuditLevel setting to Success and the auditLogLocation
setting to Application.
C. Set the serviceAuthorizationAuditLevel setting to SuccessAndFailure and the
messageAuthenticationAuditLevel setting to SuccessAndFailure.
D. Set the messageAuthenticationAuditLevel setting to SuccessAndFailure and the
auditLogLocation setting to Security.
Answer: C
QUESTION 39
You are debugging a Windows Communication Foundation (WCF) service.
The service uses signed and encrypted messages.
You need to configure logging so that you can read the contents of the messages.
What should you do?
A. Set maxSizeMessagesToLog to 10
B. Set logMessageAtServiceLevel to true.
C. Set maxMessagesToLog to 10.
D. Set logMessageAtTransportLevel to true.
Answer: B
QUESTION 40
You are hosting a Windows Communication Foundation (WCF) service at http://www.contoso.com for a law enforcement agency.
The agency adds operations to support sending biometric fingerprint data via non-buffered streaming. The service data is not routed between intermediaries.
The WCF binding you are using by default does not support encryption.
You need to ensure that fingerprint data is not disclosed when it is passed over the network.
What should you do?
A. Use basicHttpBinding with message security to https://www.contoso.com.
B. Use basicHttpBinding over transport security at https://www.contoso.com.
C. Use wsHttpBinding over message security at https://www.contoso.com.
D. Use wsHttpBinding over transport security at http://www.contoso.com.
Answer: B
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