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

1. You use Microsoft .NET Framework 4.0 to develop an ASP.NET Web application that connects to a
Microsoft SQL Server 2008 database.
The application uses Integrated Windows authentication in Internet Information Services (IIS) to
authenticate users.
A connection string named connString defines a connection to the database by using integrated security.
You need to ensure that a SqlCommand executes under the application pool's identity on the database
server.
Which code segment should you use?

A) using (var conn = new SqlConnection())
{
conn.ConnectionString = connString;
SqlCommand cmd = null;
using (HostingEnvironment.Impersonate())
{
cmd = new SqlCommand("SELECT * FROM BLOG", conn);
}
conn.Open();
var result = cmd.ExecuteScalar();
}
B) using (var conn = new SqlConnection(connString))
{
var cmd = new SqlCommand ("SELECT * FROM BLOG, conn);
conn.Open();
using(HostingEnvironment.Impersonate())
{
var result = cmd.ExecuteScalar();
}
}
C) using (var conn = new SqlConnection())
{
conn.ConnectionString = connString;
var cmd = new SqlCommand("SELECT * FROM BLOG", conn);
using (HostingEnvironment.Impersonate())
{
conn.Open();
}
var result = cmd.ExecuteScalar();
}
D) using (var conn = new SqlConneccion())
{
using (HostingEnvironroent.Impersonate())
{
conn.ConnectionString = connString;
}
var cmd = new SqlCommand("SELECT * FROM BLOG, conn);
conn.Open() ;
var result = cmd.ExecuteScalar();
}

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You use Microsoft ADO.NET Entity Data Model (EDM) to model entities.
You create an entity named Person with a schema defined by the following XML fragment.
<EntityType Name="CPerson"> <Key> <PropertyRef Name="PersonId" /> </Key>
<Property Name="PersonId" Type="Int32" Nullable="false" />
<Property Name="CompanyName" Type="String" />
<Property Name="ContactName" Type="String" />
<Property Name="ContactTitle" Type="String" />
<Property Name="Address" Type="String" />
</EntityType>
You need to ensure that entities within the application are able to add properties related to the city, region,
and country of Person's address.
What should you do?

A) Create a view named Name that returns city, region, and country along with person IDs. Add a WHERE clause to filter the results to display only the City, Region and Country properties for a specific Person entity.
B) Create a new complex type named CAddress that contains the properties for city, region, and country. Change the Type of the Address property in CPerson to "Self.CAddress".
C) Create a SubEntity named Address. Map the SubEntity to a stored procedure that retrieves city, region, and country.
D) Create a new entity named Address. Add a person ID property to filter the results to display only the City, Region, and Country properties for a specific Person entity.

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database.
You use the ADO.NET Entity Framework to manage persistence-ignorant entities. You create an
ObjectContext instance named context.
Then, you directly modify properties on several entities. You need to save the modified entity values to the
database.
Which code segment should you use?

A) context.SaveChanges();
B) context.SaveChanges(SaveOptions.AcceptAllChangesAfterSave);
C) context.SaveChanges(SaveOptions.None);
D) context.SaveChanges(SaveOptions.DetectChangesBeforeSave);

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

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create a Windows Forms
application.
You plan to deploy the application to several shared client computers. You write the following code
segment.
(Line numbers are included for reference only.)
01 Configuration config = ConfigurationManager.OpenExeConfiguration
(exeConfigName);
02 ...
03 config.Save();
04 ...
You need to encrypt the connection string stored in the .config file. Which code segment should you insert at line 02?

A) ConnectionStringsSection section = config.GetSection("connectionString") as ConnectionStringsSection; section.SectionInformation.ProtectSection("RsaProtectedConfigurationProvider");
B) ConnectionStringsSection section = config.GetSection("connectionStrings") as ConnectionStringsSection; section.SectionInformation.ProtectSection("RsaProtectedConfigurationProvider");
C) ConnectionStringsSection section = config.GetSection("connectionString") as ConnectionStringsSection; section.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
D) ConnectionStringsSection section = config.GetSection("connectionStrings") as ConnectionStringsSection; section.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");

Solutions: