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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 develop an application that connects to a MS SQL server 2008 database by User Authentication. The application contains the following connection string:
SERVER=DBSERVER-01; DATABASE=pubs; uid=sa; pwd=secret;
You need to ensure that the password value in the connection string property of a SqlConnection object
does not exist after is called.
What should you add to the connection string?

A) Persist Security Info = False
B) Trusted_Connection = False
C) Persist Security Info = True
D) Trusted_Connection = True

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application retreives data from Microsoft SQL Server 2008 database named AdventureWorks. The AdventureWorks.dbo.ProductDetails table contains a column names ProductImages that uses a varbinary(max) data type.
You write the following code segment. (Line numbers are included for reference only.)
01 SqlDataReader reader = command.ExecureReader(--empty phrase here --);
02 while(reader.Read())
03 {
04 pubID = reader.GetString(0);
05 stream = new FileStream(...);
06 writer = new BinaryWriter(stream);
07 startIndex = 0;
08 retval = reader.GetBytes(1, startIndex, outByte, 0, bufferSize);
09 while(retval == bufferSize)
10 {
11 ...
12 }
13 writer.Write(outbyte, 0, (int)retval-1);
14 writer.Flush();
15 writer.Close();
16 stream.Close();
17 }
You need to ensure that the code supports streaming data from the ProductImages column. Which code segment should you insert at the empty phrase in line 01?

A) CommandBehavior.Default
B) CommandBehavior.SingleResult
C) CommandBehavior.KeyInfo
D) CommandBehavior.SequentialAccess

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create a multi-tier application.
You use Microsoft ADO.NET Entity Data Model (EDM) to model entities.
The model contains entities named SalesOrderHeader and SalesOrderDetail.
For performance considerations in querying SalesOrderHeader, you detach SalesOrderDetail entities from
ObjectContext.
You need to ensure that changes made to existing SalesOrderDetail entities updated in other areas of your
application are persisted to the database.
Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A) Set the MergeOption of SalesOrderDetail to MergeOptions.OverwriteChanges.
B) Set the MergeOption of SalesOrderDetail to MergeOptions.NoTracking.
C) Re-attach the SalesOrderDetail entities.
D) Call ObjectContext.ApplyCurrentValue.
E) Call ObjectContext.ApplyOriginalValue.

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

5. The database contains orphaned Color records that are no longer connected to Part records.
You need to clean up the orphaned records. You have an existing ContosoEntities context object named
context.
Which code segment should you use?

A) context.Colors.ToList().RemoveAll(c => !c.Parts.Any()); context.SaveChanges();
B) var unusedColors = context.Colors.Where(c => !c.Parts.Any()).ToList(); foreach (var unused in unusedColors){
context.DeleteObject(unused)
}
context.SaveChanges();
C) context.Colors.TakeWhile(c => !c.Parts.Any()); context.SaveChanges();
D) var unusedColors = context.Colors.Where(c => !c.Parts.Any()); context.DeleteObject(unusedColors); context.SaveChanges();

Solutions: