Study with 070-516 Actual Test Questions

Microsoft 070-516 Exam Overview:

Microsoft 070-516 Exam Syllabus Topics:

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

1. You develop a Microsoft .NET application that uses Entity Framework to store entities in a Microsft SQL
Server 2008 database.
While the application is disconnected from the database, entities that are modified, are serialized to a local
file.
The next time the application connects to the database, it retrieves the identity from the database by using
an object context
named context and stores the entity in a variable named remoteCustomer.
The application then serializes the Customer entity from the local file and stores the entity in a variable
named localCustomer.
The remoteCustomer and the localCustomer variables have the same entity key.
You need to ensure that the offline changes to the Customer entity is persisted in the database when the
ObjectContext.SaveChanges() method is called.
Which line of code should you use?

A) context.ApplyCurrentValues("Customers", remoteCustomer);
B) context.ApplyOriginalValues("Customers", localCustomer);
C) context.ApplyOriginalValues("Customers", remoteCustomer);
D) context.ApplyCurrentValues("Customers", localCustomer);

2. You use Microsoft Visual Studio 2010 and Microsoft Entity Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server database. You use the ADO.NET LINQ to SQL model
to retrieve data from the database.
The applications contains the Category and Product entities as shown in the following exhibit:

You need to ensure that LINO to SQL executes only a single SQL statement against the database. You also need to ensure that the query returns the list of categories and the list of products.
Which code segment should you use?
Exhibit:

A) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.DeferredLoadingEnabled = false;
var categories = from c in dc.Categories
select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }
B) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.ObjectTrackingEnabled = false;
var categories = from c in dc.Categories
select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }
C) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.DeferredLoadingEnabled = false;
DataLoadOptions dlOptions = new DataLoadOptions();
dlOptions.LoadWith<Category>(c => c.Products);
dc.LoadOptions = dlOptions;
var categories = from c in dc.Categories select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }
D) using (NorthwindDataContext dc = new NorthwindDataContext()) { dc.DeferredLoadingEnabled = false;
DataLoadOptions dlOptions = new DataLoadOptions();
dlOptions.AssociateWith<Category>(c => c.Products);
dc.LoadOptions = dlOptions;
var categories = from c in dc.Categories
select c;
foreach (var category in categories) { Console.WriteLine("{0} has {1} products", category.CategoryName, category.Products.Count); } }

3. 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 model includes the entity
shown in the following exhibit:

You need to add a function that returns the number of years since a person was hired.
You also need to ensure that the function can be used within LINQ to Entities queries. What should you do?

A) //Add the following conceptual model function returns the number of years since an instructor was hired
<Function Name="YearsSince" ReturnType="Edm.Int32">
<Parameter Name="date" Type="Edm.DateTime" />
<DefiningExpression>
Year(CurrentDateTime()) -Year(date)
</DefiningExpression>
</Function>
// add the following method to your application and use an EdmFunctionAttribute to map it to the
conceptual model function:
[EdmFunction("SchoolModel", "YearsSince")] public static int YearsSince(DateTime date){ throw new NotSupportedException("Direct calls are not supported."); }
B) Use the Entity Data Model Designer to create a complex property named YearsSinceNow that can be accessed throuqh the LINQ to Entites query at a Later time
C) //Add the following conceptual model function returns the number of years since an instructor was hired
<Function Name="YearsSince" ReturnType="Edm.Int32">
<Parameter Name="date" Type="Edm.DateTime" />
<DefiningExpression>
Year(CurrentDateTime()) -Year(date)
</DefiningExpression>
</Function>
// add the following method to your application and use an EdmFunctionAttribute to map it to the
conceptual model function:
[EdmFunction("SchoolModel", "YearsSince")]
public static int YearsSince(DateTime date){
return CurrentDateTime() -Year(date);
}
D) //Add the following conceptual model function returns the number of years since an instructor was hired
<Function Name="YearsSince" ReturnType="Edm.Int32">
<Parameter Name="date" Type="Edm.DateTime" />
<DefiningExpression>
YearsSince(DateTime date)
</DefiningExpression>
</Function>
// add the following method to your application and use an EdmFunctionAttribute to map it to the
conceptual model function:
[EdmFunction("SchoolModel", "YearsSince")]
public static int YearsSince(DateTime date){
return CurrentDateTime() -Year(date);
}

4. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
2008 database.
You add the following table to the database.
CREATE TABLE Orders( ID numeric(18, 0) NOT NULL, OrderName varchar(50) NULL, OrderTime time(7) NULL, OrderDate date NULL)
You write the following code to retrieve data from the OrderTime column. (Line numbers are included for reference only.)
01 SqlConnection conn = new SqlConnection("...");
02 conn.Open();
03 SqlCommand cmd = new SqlCommand("SELECT ID, OrderTime FROM Orders", conn);
04 SqlDataReader rdr = cmd.ExecuteReader();
05 ....
06 while(rdr.Read())
07 {
08 ....
09 }
You need to retrieve the OrderTime data from the database. Which code segment should you insert at line 08?

A) Timer time = (Timer)rdr[1];
B) DateTime time = (DateTime)rdr[1];
C) string time = (string)rdr[1];
D) TimeSpan time = (TimeSpan)rdr[1];

5. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server 2008 database. The application includes a SqlConnection named
conn and a SqlCommand named cmd.
You need to create a transaction so that database changes will be reverted in the event that an exception is
thrown.
Which code segment should you use?

A) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Commit();
}
catch
{
transaction.Rollback();
}
B) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Commit();
}
catch
{
transaction.Dispose();
}
C) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
transaction.Rollback();
}
catch
{
transaction.Dispose();
}
D) var transaction = conn.BeginTransaction(); cmd.Transaction = transaction; try {
...
}
catch
{
transaction.Commit();
}

Solutions: