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Microsoft 70-516 Exam Syllabus Topics:

Section	Objectives
Working with LINQ to SQL and LINQ to Entities	- Mapping objects to relational data - Querying data using LINQ
Entity Framework Data Access	- CRUD operations using Entity Framework - Entity data model design
Working with ADO.NET	- Connection management and commands - Data readers and data adapters
Data Management and Application Integration	- Performance optimization and caching strategies - Transaction management
Designing Data Access Solutions	- Choosing appropriate data access technologies in .NET Framework 4 - Entity Framework vs ADO.NET considerations

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

Question #1

You use Microsoft .NET Framework 4.0 to develop an application.
You write the following code to update data in a Microsoft SQL Server 2008 database.
(Line numbers are included for reference only.)
01 private void ExecuteUpdate(SqlCommand cmd, string connString, string
updateStmt)
02 {
03 ...
04 }
You need to ensure that the update statement executes and that the application avoids connection leaks. Which code segment should you insert at line 03?

A. using (SqlConnection conn = new SqlConnection(connString))
{
conn.Open() ;
cmd.Connection = conn;
cmd.CommandText = updateStmt;
cmd.ExecuteNonQuery() ;
}
B. SqlConnection conn = new SqlConnection(connString); conn.Open(); cmd.Connection = conn; cmd.CommandText = updateStmt; cmd.ExecuteNonQuery(); cmd.Connection.Close() ;
C. SqlConnection conn = new SqlConnection(connString); conn.Open(); cmd.Connection = conn; cmd.CommandText = updateStmt; cmd.ExecuteNonQuery();
D. using (SqlConnection conn = new SqlConnection(connString))
{
cmd.Connection = conn;
cmd.CommandText = updateStmt;
cmd.ExecuteNonQuery();
cmd.Connection.Close();
}

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Correct Answer: A 🗳️

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Question #2

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application updates several Microsoft SQL Server databases within a single transaction.
You need to ensure that after a resource failure, you can manage unresolved transactions. What should
you do?

A. Call the RecoveryComplete method of the TransactionManager class.
B. Call the EnlistDurable method of the Transaction class.
C. Call the EnlistVolatile method of the Transaction class.
D. Call the Reenlist method of the TransactionManager class.

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Correct Answer: D 🗳️

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Question #3

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that
uses the Entity Framework.
You create the following Entity Data Model.

You add the following code fragment:
using(var context = new AdventureWorksLTEntities())
{ Customer cust = context.Customers.First(); cust.CompanyName = "Contoso"; int count = 0;
}
The changes to the cust entity must be saved. If an exception is thrown, the application will attempt to save
up to 3 times.
If not, an exception is thrown. Which code segment should you use?

A. while(true)
{ context.SavingChanges += delegate(System.Object o, System.EventArgs e) {
if(count++ >2)
{
throw new Exception();
}
context.SaveChanges();
}
}
B. while(count++ < 3)
{
try
{
context.SaveChanges();
break;
}
catch(Exception)
{
}
}
C. while(cust.EntityState == EntityState.Modified)
{
try
{
context.SaveChanges();
}
catch(Exception)
{
if(count++ > 2 && context.Connection.State ==
ConnectionState.Broken
{
throw new Exception();
}
}
}
D. while(context.ObjextStateManager.GetObjectStateEntry (cust).OriginalValues.IsDBNull(0)) {
if(count++ >2)
{
break;
}
context.SaveChanges();
}

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Correct Answer: C 🗳️

Question #4

You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You use the ADO.NET Entity Framework to model your entities.
The application connects to a Microsoft SQL Server 2008 database named AdventureWorks by using
Windows Authentication.
Information about the required Entity Data Model (EDM) is stored in the following files:
-model.csdl
-model.ssdl
-model.msl
These files are embedded as resources in the MyCompanyData.dll file.You need to define the connection
string
that is used by the application. Which connection string should you add to the app.config file?

A. <add name="AdventureWorksEntities" connectionString="metadata=res://MyComparny.Data,Culture=neutral,PublicKeyToken=null/
model.csdIl res://MyCompany.Data,Culture=neutral, PublicKeyToken=null/model.ssdl| res://MyCompany.Data,Culture=neutral, PublicKeyToken=null/model.msl; provider=System.Data.SqlClient; provider connection string='DataSource=localhost;Initial Catalog=AdventureWorks;lntegrated
Security=True;multipleactivesuitsets=true'"
providerName="System.Data.EntityClient"/>
B. <add name="AdventureWorksEntities" connectionString="metadata=res://MyComparny.Data,Culture=neutral,PublicKeyToken=null/
model.csdIl
res://MyComparny.Data,Culture=neutral,PublicKeyToken=null/model.ssdIl
res://MyComparny.Data,Culture=neutral,PublicKeyToken=null/model.msl;
provider=System.Data.OleDBClient;
provider connection string='Provider=sqloledb;DataSource=localhost;Initial
Catalog=AdventureWorks;lntegrated Security=SSPI;multipleactivesuitsets=true'"
providerName="System.Data.EntityClient"/>
C. <add name="AdventureWorksEntities" connectionString="metadata=res://MyComparny.Data,Culture=neutral,PublicKeyToken=null/
model.csdIl res://MyCompany.Data,Culture=neutral, PublicKeyToken=null/model.ssdl| res://MyCompany.Data,Culture=neutral, PublicKeyToken=null/model.msl; provider=System.Data.EntityClient; provider connection string='DataSource=localhost;Initial Catalog=AdventureWorks;lntegrated
Security=True;multipleactivesuitsets=true'"
providerName="System.Data.SqlClient"/>
D. <add name="AdventureWorksEntities" connectionString="metadata=res://MyComparny.Datamodel.csdl| res://MyCompany.Data.model.ssdl| res://MyCompany.Data.model.msl; provider=System.Data.SqlClient; provider connection string='DataSource=localhost;Initial Catalog=AdventureWorks;lntegrated
Security=SSPI;multipleactivesuitsets=true'"
providerName="System.Data.EntityClient"/>

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Correct Answer: A 🗳️

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Question #5

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. The application uses the ADO.NET Entity
Framework to manage order data.
The application makes a Web service call to obtain orders from an order-tracking system.
You need to ensure that the orders are added to the local data store. Which method should you call on the
ObjectContext?