Microsoft TS: Microsoft .NET Framework 3.5 C Windows Communication Foundation : 070-503

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

2. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. The service will be hosted on a Web server. You add the following code fragment to the .svc file.
<% @ServiceHost Factory="ExamServiceFactory" Service="ExamService" %>
You need to create the instances of the services by using the custom ExamServiceFactory
class.
Which code segment should you use?

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

3. You create a client application by using Microsoft .NET Framework 3.5. The client application uses a Windows Communication Foundation (WCF) service.
The WCF service reads the value of the incoming message headers by using the following code segment.

The following code fragment is a part of the application configuration file. (Line numbers are included for reference only.)

The client application adds a message header each time it calls the WCF service.
You need to ensure that the message header provides the following values to its parameters.

Which code fragment should you insert at line 04?

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

4. You create a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You define the following data contract.

You need to identify the structure of the resulting XML instance document. Which structure will the data contract produce?

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

5. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5.
You write the following code segment to create a service contract. (Line numbers are included for reference only.)

You need to ensure that the client applications always use a binding that supports sessions.
Which code segment should you insert at line 01?

A) [ServiceContract(SessionMode=SessionMode.Required) ]
B) [ServiceContract(ProtectionLevel= ProtectionLevel.EncryptAndSign) ]
C) [ServiceContract(SessionMode=SessionMode.Allowed) ]
D) [ServiceContract(ProtectionLevel= ProtectionLeve1.EncryptAndSign, SessionMode=SessionMode.Allowed)]

Solutions: