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Microsoft 70-503 Exam Syllabus Topics:

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

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

2. You are creating a Windows Communication Foundation service by using Microsoft .NET Framework 3.5. You write the following code segment for the service contract.
(Line numbers are included for reference only.) 01 <ServiceContractO> _
03 Public Class MyService 04...
05 End Class
The service uses transactions that time out in a minute. You need to increase the timeout interval of the transactions to 2 minutes and 30 seconds. Which code segment should you insert at line 02?

A) <ServiceBehaviorO"ransactionTimeout:="0:150:00")>_
B) <ServiceBehavior(TransactionTimeout:="0:2:30")> _
C) <ServiceBehavior(TransactionTimeout:="2:30:00")> _
D) <ServiceBehavior(TransactionTimeout:="150")> _

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))
throw new SecurityTokenValidationException();
else
return null;
D) if (IsCardValid(creditCardToken.CardNumber, creditCardToken.ValidTo))
return null;
else
throw new SecurityTokenValidationException();

4. You are creating a Windows Communication Foundation (WCF) service by using Microsoft .NET Framework 3.5.
You add the following code segment to the service.

You add the following code segment to the client application. 01 public double PerformCalculations (double num1, double num2) 02 {
04 }
You need to ensure that the DisposeCalculator operation is always called. Which code segment should you insert at line 03?

A) Option A
B) Option B
C) Option C
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(ProtectionLevel:=ProtectionLevel._ EncryptAndSign,SessionMode:=SessionMode.Allowed)> __
B) <ServiceContract(ProtectionLevel:=ProtectionLevel.EncryptAndSign)> __
C) <ServiceContract(SessionMode:=SessionMode.Allowed)> __
D) <ServiceContract(SessionMode:=SessionMode.Required)>

Solutions: