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Microsoft UPG:Transition MCPD.NET Frmwrk 3.5 Web Dev to 4 Web Dev Sample Questions:

1. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to create an application. You use
the ADO.NET Entity Framework to model entities. You write the following code segment. (Line numbers
are included for reference only.)
01AdventureWorksEntities context = New AdventureWorksEntities (http://localhost:1234/AdventureWorks.
svc );
02
03var q = from c in context.Customers
04where c.City == "London"
05orderby c.CompanyName
06select c;
You need to ensure that the application meets the following requirements: "Compares the current values of
unmodified properties with values returned from the data source. "Marks the property as modified when the
properties are not the same. Which code segment should you insert at line 02?

A) context.MergeOption = MergeOption.PreserveChanges;
B) context.MergeOption = MergeOption.NoTracking;
C) context.MergeOption = MergeOption.AppendOnly;
D) context.MergeOption = MergeOption.OverwriteChanges;

2. A Windows Communication Foundation (WCF) service has a callback contract.
You are developing a client application that will call this service.
You must ensure that the client application can interact with the WCF service.
What should you do?

A) On the OperationContractAttribute, set the AsyncPattern property value to True.
B) On the OperationContractAttribute, set the ReplyAction property value to the endpoint address of the client.
C) On the client, create a proxy derived from DuplexClientBase<TChannel>.
D) On the client, use GetCallbackChannel<T>.

3. You have an ASP.NET Web Forms application for processing orders.
Many users of the application submit their order forms multiple times due to incorrectly formatted credit
card information.
You need to plan for validation of the length and format of data in the credit card field on the client side prior
to processing each transaction.
Which approach should you recommend?

A) Use a RequiredFieldValidator control and a CompareValidator control.
B) Use a CustomValidator control in the OnServerValidate method.
C) Use a RequiredFieldValidator control and a RegularExpressionValidator control.
D) Use a CustomValidator control in the Page_Load method.

4. You are designing a user input form that is part of an ASP.NET Web Forms application. You need to ensure that users cannot attack the Web server by submitting invalid data. Which approach should you recommend?

A) Write an onSubmit JavaScript handler that validates all form input.
B) Write an onSubmit JavaScript handler that URL-encodes all data that is passed to the server.
C) Install a certificate on the Web server, and force all Web traffic to use SSL.
D) Write an OnClick method for the Submit button that rejects form submissions that contain invalid data.

5. Your Windows Communication Foundation (WCF) client application uses HTTP to communicate with the
service. You need to enable message logging and include all security information such as tokens and
nonces in logged messages.
What should you do?

A) In the machine configuration file, add the following XML segment to the system.serviceModel configuration section. <machineSettings enableLoggingKnownPii="true" /> Generate the ContosoService class using the Add Service Reference wizard. Add the following code segment. Dim client As ContosoService = New ContosoService() client.Endpoint.Behaviors.Add(New CallbackDebugBehavior(True))
B) In the machine configuration file, add the following XML segment to the system.serviceModel configuration section. <machineSettings enableLoggingKnownPii="true" /> In the application configuration file, add the logKnownPii attribute to the message logging diagnostics source and set the value of the attribute to true. In the application configuration file, add the following XML segment to the system.serviceModel configuration section group. <diagnostics>
<messageLogging logMessagesAtTransportLevel="true"/>
</diagnostics>
C) In the application configuration file, add the following XML segment to the system.serviceModel configuration section group. <diagnostics>
<messageLogging logMessagesAtTransportLevel="true"
logEntireMessage="true" />
</diagnostics>
D) In the application configuration file, add the logKnownPii attribute to the message logging diagnostics source and set the value of the attribute to true. Generate the ContosoService class using the Add Service Reference wizard. Add a reference to System.ServiceModel.Routing.dll. Add the following code segment. Dim client As ContosoService = New ContosoService() Dim behavior As SoapProcessingBehavior = New SoapProcessingBehavior() behavior.ProcessMessages = True client.Endpoint.Behaviors.Add(behavior)

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