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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.
The application uses the ADO.NET Entity Framework to model persistence-ignorant entities. The
application operates in a disconnected mode.
You need to ensure that changes made to local entities while the application is in the disconnected mode
are correctly persisted.
Which method should you call before persisting changes?

A) ObjectStateEntry.AcceptChanges
B) ObjectContext.Refresh
C) DataContext.AcceptAllChanges
D) ObjectStateEntry.SetModifiedProperty

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that
uses the Entity Framework.
You create an Entity Data Model (EDM) named Model. You need to ensure that the Storage Schema
Definition Language (SSDL)
of the EDM can be modified without rebuilding the application. What should you do?

A) Set the Metadata Artifact Processing property to Embed in Output Assembly and use the following connection string: metadata=res://*/Model.csdl| res://*/Model.ssdl| res://*/Model.msl; provider=System.Data.SqlClient; provider connection string="& "
B) Set the Metadata Artifact Processing property to Copy to Output Directory and use the following connection string: metadata=res://*/Model.csdl| res://*/Model.ssdl| res://*/Model.msl; provider=System.Data.SqlClient; provider connection string ="& "
C) Set the Metadata Artifact Processing property to Copy to Output Directory and use the following connection string: metadata=.\Model.csdl| .\Model.ssdl| .\Model.msl; provider=System.Data.SqlClient; provider connection string ="& "
D) Set the Metadata Artifact Processing property to Embed in Output Assembly and use the following connection string: metadata=.\Model.csdl| .\Model.ssdl| .\Model.msl; provider=System.Data.SqlClient; provider connection string="& "

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create a Microsoft ASP.NET
application.
The application connects to a Microsoft SQL Server database. The application is hosted on a Web server
along with other applications.
You need to secure the transmission of data between the application and the database.
You need to achieve this goal without affecting other applications. What should you do?

A) Use Internet Protocol Security (IPSec) to secure the communication channel.
B) Encrypt the connection string.
C) Use encryption to store sensitive data in the database.
D) Use Secure Sockets Layer (SSL) to establish connections to the database.

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an ASP.NET Web application that uses the Entity Framework.
The build configuration is set to Release. The application must be published by using Microsoft Visual Studio 2010, with the following requirements:
-The database schema must be created on the destination database server.
-The Entity Framework connection string must be updated so that it refers to the destination database server.
You need to configure the application to meet the requirements. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Set Items to deploy in the Package/Publish Web tab to All files in this Project Folder for the release configuration.
B) Include the source database entry in the Package/Publish SQL tab and update the connection string for the destination database.
C) Generate the DDL from the Entity Framework Designer and include it in the project. Set the action for the DDL to ApplicationDefinition.
D) Use the web.config transform file to modify the connection string for the release configuration.

5. Which code segment will properly return the TimeSpan returned by the stopWatch variable?

A) Stopwatch stopWatch = new Stopwatch();
stopWatch.Start();
DoSomething();
stopWatch.Stop();
TimeSpan ts = stopWatch.Elapsed;
string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds,
ts.Milliseconds / 10);
Console.WriteLine(elapsedTime, "RunTime");
private void DoSomething()
{ ... }
B) Stopwatch stopWatch = new Stopwatch(); stopWatch.Start(); DoSomething(); stopWatch.Reset(); TimeSpan ts = stopWatch.Elapsed; string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10); Console.WriteLine(elapsedTime, "RunTime");
private void DoSomething()
{ ... }
C) Stopwatch stopWatch = new Stopwatch(); stopWatch.Start(); DoSomething(); TimeSpan ts = stopWatch.Elapsed; string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10); Console.WriteLine(elapsedTime, "RunTime");
private void DoSomething()
{ ... }
D) Stopwatch stopWatch = new Stopwatch(); stopWatch.Begin(); DoSomething(); stopWatch.End(); TimeSpan ts = stopWatch.Elapsed; string elapsedTime = String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10); Console.WriteLine(elapsedTime, "RunTime");
private void DoSomething()
{ ... }

Solutions: