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Microsoft TS: Accessing Data with Microsoft .NET Framework 4 Sample Questions:

1. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application that
connects to a database by using the Entity Framework.
You create an Entity Data Model (EDM) by using the Generate from database wizard for the following
tables.

You need to ensure that the EDM contains an entity type named Employee that contains all of the data from
both tables.
What should you do?

A) Create an inheritance relationship between the Employee and EmployeeAccess entities, and use CanAccessBuildings as an inheritance condition.
B) Create a one-to-one association named CanAccessBuildingsAssociation between the EmployeeAccess entity and the Employee entity.
C) Modify the .edmx file to include the following line of code. <NavigationProperty Name="Type" FromRole="EmployeeAccess" ToRole="Employee" />
D) Delete the EmployeeAccess entity, create a new property named CanAccessBuildings on the Employee entity, and add a mapping for the new property.

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application.
You use the ADO.NET Entity Framework Designer to model entities.
You need to associate a previously deserialized entity named person1 to an object context named model
and persist changes to the database.
Which code segment should you use?

A) model.People.Attach(person1); model.SaveChanges();
B) model.People.ApplyChanges(person1) ; model.SaveChanges();
C) model.AttachTo("People", person1); model.SaveChanges();
D) person1.AcceptChanges(); model.SaveChanges();

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The configuration file contains the following code segment.
<configuration> <connectionStrings> <add name="AdventureWorksLT" connectionString="DataSource=SQL01;InitialCatalog=AdventureWorksLT; IntegratedSecurity=True;" providerName="System.Data.SqlClient"/> </connectionStrings> </configuration>
You need to retrieve the connection string named AdventureWorksLT from the configuration file. Which line of code should you use?

A) varconnectionString=ConfigurationManager.ConnectionStrings["AdventureWorksLT"].Name;
B) varconnectionString=ConfigurationManager.AppSettings["AdventureWorksLT"];
C) varconnectionString=ConfigurationManager.ConnectionStrings["AdventureWorksLT"].ConnectionString;
D) varconnectionString=ConfigurationSettings.AppSettings["AdventureWorksLT"];

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application uses the ADO.NET Entity Framework to model entities.
The application allows users to make changes while disconnected from the data store.
Changes are submitted to the data store by using the SubmitChanges method of the DataContext object.
You receive an exception when you call the SubmitChanges method to submit entities that a user has
changed in offline mode.
You need to ensure that entities changed in offline mode can be successfully updated in the data store.
What should you do?

A) Call the SubmitChanges method of DataContext with a value of System.Data.Linq.ConflictMode.ContinueOnConflict.
B) Set the DeferredLoadingEnabled property of DataContext to true.
C) Call the SaveChanges method of DataContext with a value of false.
D) Set the ObjectTrackingEnabled property of DataContext to true.

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application contains the following XML fragment:
<ApplicationMenu> <MenuItem name="File">
<MenuItem name="New">
<MenuItem name="Project" />
<MenuItem name="Web Site" />
</MenuItem>
<MenuItem name="Open">
<MenuItem name="Project" />
<MenuItem name="Web Site" />
</MenuItem>
<MenuItem name="Save" />
</MenuItem>
<MenuItem name="Edit">
<MenuItem name="Cut" />
<MenuItem name="Copy" />
<MenuItem name="Paste" />
</MenuItem>
<MenuItem name="Help">
<MenuItem name="Help" />
<MenuItem name="About" />
</MenuItem> </ApplicationMenu>
The application queries the XML fragment by using the XmlDocument class. You need to select all the descendant elements of the MenuItem element that has its name attribute as File. Which XPath expression should you use?

A) //*[@name='File'][name()='MenuItem']
B) /ApplicationMenu/MenuItem/descendant::MenuItem['File']
C) /ApplicationMenu/MenuItem[@name='File']/descendant::MenuItem
D) /ApplicationMenu/MenuItem['File']//MenuItem

Solutions: