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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. The application connects to a Microsoft SQL Server 2008 database. The application uses DataContexts to query the database. You create a function that meets the following requirements: "Updates the Customer table on the database when a customer is marked as deleted. "Updates the related entries in other tables (CustomerAddress, CustomerContacts) by marking them as deleted. "Prevents consumer code from setting the Deleted column's value directly. You need to ensure that the function verifies that customers have no outstanding orders before they are marked as deleted. You also need to ensure that existing applications can use the update function without requiring changes in the code. What should you do?

A) Override the Delete operation of the DataContext object.
B) Override the Update operation of the DataContext object.
C) Add new entities to the DataContext object for the Customers and Orders tables.
D) Modify the SELECT SQL statement provided to the DataContext object to use an INNER JOIN between the Customer and Orders tables.

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

3. You are creating a Windows Communication Foundation (WCF) service that is implemented as follows.
(Line numbers are included for reference only.)
01 [ServiceContract]
02 [ServiceBehavior(IncludeExceptionDetailsInFaults = true)]
03 public class OrderService
04 {
05 [OperationContract]
06 public void SubmitOrder(Order anOrder)
07 {
08 try
09 {
10 ...
11 }
12 catch(DivideByZeroException ex)
13 {
14
15 }
16 }
17 }
You need to ensure that the stack trace details of the exception are not included in the error information
sent to the client.
What should you do?

A) Replace line 14 with the following line. throw;
B) After line 05, add the following line. [FaultContract(typeof(FaultException<Order>))] Replace line 14 with the following line. throw new FaultException<Order>(anOrder, "Divide by zero exception");
C) After line 05, add the following line. [FaultContract(typeof(FaultException<Order>))] Replace line 14 with the following line. throw ex;
D) Replace line 14 with the following line.
throw new FaultException<Order>(anOrder, ex.ToString());

4. You deploy an ASP.NET application to an IIS server.
You need to log health-monitoring events with severity level of error to the Windows application event log.
What should you do?

A) Set the Treat warnings as errors option to All in the project properties and recompile.
B) Add the following rule to the <healthMonitoring/> section of the web.config file. <rules> <add name="Failures"
eventName="Failure Audits"
provider="EventLogProvider" />
</rules>
C) Add the following rule to the <healthMonitoring/> section of the web.config file. <rules> <add name="Errors" eventName="All Errors" provider="EventLogProvider" /> </rules>
D) Run the aspnet_regiis.exe command.

5. You are implementing an ASP.NET page. Client-side script requires data. Your application includes a class
named Person with a Name property of type string. The code-behind file of the page includes the following
code segment.
public string JsonValue;
List<Person> people = GetPeopleList();
JavaScriptSerializer json = new JavaScriptSerializer();
You need to use the JavaScriptSerializer class to serialize only the Name property of each item in the
people list.
Which code segment should you use?

A) JsonValue = json.Serialize(people.Select(p => p.Name)); var names = from person in people select person; JsonValue = "{" + json.Serialize(names) + "}";
B) JsonValue = json.Serialize(people.SelectMany( p => Name.AsEnumerable())); var names = from person in people select person; JsonValue = json.Serialize(names);

Solutions: