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

Question 2

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You need to insert an additional header in a response message.
What should you do?

A. Implement the BeforeSendReply method of the IDispatchMessagelnspector interface.
B. Implement the BeforeSendRequest method of the IClientMessagelnspector interface.
C. Implement the AfterCall method of the IParameterlnspector interface.
D. Implement the AfterReceiveRequest method of the IDispatchMessagelnspector interface.

Question 3

You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
The service will be hosted on a Web server that hosts other Microsoft ASP.NET applications.
You need to enable service model extension (.svc) for the W3SVC/l/ROOT/SampleApp directory and its subdirectories.
Which command should you use?

A. ServiceModelReg.exe - k: W3SVC/l/ROOT/SampleApp
B. ServiceModelReg.exe - sn: W3SVC/l/ROOT/SampleApp
C. ServiceModelReg.exe - i: W3SVC/l/ROOT/SampleApp
D. ServiceModelReg.exe -s: W3SVC/1/ROOT/SatripleApp

Question 4

You create an application by using Microsoft Visual Studio .NET 2008 and the .NET Framework 3.5. The component will return custom business objects. You plan to develop a design strategy that meets the following requirements:
The component can be accessed by the .NET Windows applications and JavaScript-based Web applications. The component can be consumed by the client applications by using the minimum amount of code. The least amount of network bandwidth is consumed. You need to implement the design strategy by using the minimum amount of development effort. What should you do?

A. Develop the component as a Web service. Return the business objects as strings that contain the values of the properties concatenated and separated by a comma.
B. Develop the component as a Windows Communication Foundation service. Return the business objects as JavaScript Object Notation objects.
C. Develop the component as a Windows Communication Foundation service. Return the business objects as serialized binary objects.
D. Develop the component as a Web service. Return the business objects as XML.

Question 5

You are creating an endpoint for a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You create the endpoint by using a custom binding. You write the following code segment.

You need to prevent the custom binding from making a persistent connection to the service endpoint.
Which code segment should you use?

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

Solutions: