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Microsoft 070-503 Exam Syllabus Topics:

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

1. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service contains the following code segment.

You need to create a service contract that meets the following requirements:
Which code segment should you use?

A) Option D
B) Option A
C) Option B
D) Option C

2. You are creating a Windows Communication Foundation (WCF) client application by using Microsoft .NET Framework 3.5.
The proxy generated for the WCF service results in the following code segment.

To implement a callback interface, you create the following class in the client application.
Public Class StoreCallback
Implements IStoreCallback End Class
The client application receives notifications from the service through the callback interface. You write the following code segment for the client application to use the generated proxy. (Line numbers are included for reference only.)
02 client. CheckAvailableProducts()
You need to set up duplex communication between the client application and the WCF service. Which code segment should you insert at line 01?

A) Option D
B) Option A
C) Option B
D) Option C

3. You are creating a distributed application by using Microsoft .NET Framework 3.5.
The application uses Windows Communication Foundation (WCF). The distributed application provides point-to-point security.
You need to ensure that the distributed application provides end-to-end security instead of point-to-point security.
Which binding mode should you use?

A) netTcpBinding with Transport security
B) wsHttpBinding with Message security
C) netNamedPipeBinding with Transport security
D) wsHttpBinding with Transport security

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

5. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You write the following lines of code.

You need to define the metadata for the DoSomething operation contract so that the parameter element is named Input and the method output element is named Output.
Which code segment should you use to replace the existing operation contract?

A) Option D
B) Option A
C) Option B
D) Option C

Solutions: