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Microsoft 070-503 Exam Syllabus Topics:

Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation Sample Questions:

Question 1

You are creating a distributed application by using Microsoft .NET Framework 3.5. The application uses Windows Communication Foundation.
The client applications require the users to provide a user name and a password.
You need to ensure that the server authenticates the client applications by verifying user names and passwords.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A. Option A
B. Option B
C. Option C
D. Option D

Question 2

You create a client application by using Microsoft .NET Framework 3.5. The client application uses a Windows Communication Foundation (WCF) service. You plan to implement inspection handling on the client application and the WCF service. You need to add error handling to the WCF service. What should you do?

A. Modify the BeforeSendReply method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.
B. Modify the AfterReceiveRequest method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.
C. Modify the BeforeSendRequest method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.
D. Modify the AfterReceiveReply method to catch the ReplyValidationFault exception. Replace the reply message with an explicit fault message.

Question 3

You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5.
The WCF service must authenticate the client applications by validating credit card numbers and expiry dates. You write the following code segment. (Line numbers are included for reference only.)
01 class CreditCardTokenAuthenticator: SecurityTokenAuthenticator
02 {
03 // Implementation of other abstract methods comes here.
04 protected override ReadOnlyCollection<IAuthorizationPolicy> ValidateTokenCore(SecurityToken token)
05 {
06 CreditCardToken creditCardToken = token as CreditCardToken;
07 }
09 private bool IsCardValid(string cardNumber, 13 DateTime expirationDate)
10 {
11 // Validation code comes here.
12 }
13 }
You need to implement custom authentication for the WCF service. Which code segment should you insert at line 07?

A. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
return new List<IAuthorizationPolicy>(0).AsReadOnly();
else
return null;
B. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
return null;
else
return new List<IAuthorizationPolicy>(0).AsReadOnly();
C. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
return null;
else
throw new SecurityTokenValidationException();
D. if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
throw new SecurityTokenValidationException();
else
return null;

Question 4

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You write the following code segment.
namespace MyServices
{
[ServiceContract()]
interface IManageOrders
{
...
}}
The service metadata must be exposed at the relative address named meta.
You need to add an endpoint element to the app.config file of the service host. Which code
fragment should you add?

A. <endpoint address="meta" binding="wsHttpBinding" contract="MyServices.IMetadataExchange" />
B. <endpoint address="meta" binding="mexHttpBinding" contract="IMetadataExchange" />
C. <endpoint address="meta" binding="mexHttpBinding" contract="MyServices.IManageOrders" />
D. <endpoint address="meta" binding="wsHttpBinding" contract="IManageOrders" />

Question 5

You are creating a client application by using Microsoft .NET Framework 3.5. The
application consumes an ASMX Web service.
You need to configure the binding to call the methods of the ASMX Web service.
Which binding should you use?

A. Option A
B. Option B
C. Option C
D. Option D

Solutions: