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Microsoft 70-516 Exam Syllabus Topics:

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

1. You use Microsoft Visual Studio 2010 and .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server 2008 database. The application contains the following
code segment.
string SQL = string.Format("SELECT * FROM Customer WHERE CompanyName LIKE '%
{0}%', companyName);
var cmd = new SqlCommand(SQL, con);
You need to reduce the vulnerability to SQL injection attacks. Which code segment should you use?

A) string SQL = "SELECT * FROM Customer Where " + "CompanyName LIKE @companyName"; var cmd = new SqlCommand(SQL,con); var param = new SqlParameter ("@companyName", string.Format("%{0}%", companyName));
B) string SQL = "SELECT" * FROM Customer @companyName; var cmd = new sqlcommand(SQL,con); cmd.Parameters.AddWithValue("companyName", string.format("where companyName LIKE '%{0}%'", companyName));
C) string SQL = string.Format("SELECT * FROM " + " Customer Where CompanyName LIKE {0}",
new SqlCommand("@companyName", string.format("%{0}%", companyName))); var cmd = new SqlCommand(SQL, con);
D) string SQL = "SELECT * FROM Customer Where " + "CompanyName LIKE @companyName"; var cmd = new SqlCommand(SQL,con); cmd.Parameters.AddWithValue("@companyName", string.Format("%{0}%", companyName));

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
The application connects to a Microsoft SQL Server 2008 database. The application uses DataContexts to
query the database.
You create a function that meets the following requirements:
-Updates the Customer table on the database when a customer is marked as deleted.
-Updates the related entries in other tables (CustomerAddress, CustomerContacts) by marking them as deleted.
-Prevents consumer code from setting the Deleted column's value directly.
You need to ensure that the function verifies that customers have no outstanding orders before they are
marked as deleted.
You also need to ensure that existing applications can use the update function without requiring changes in
the code.
What should you do?

A) Add new entities to the DataContext object for the Customers and Orders tables.
B) Modify the SELECT SQL statement provided to the DataContext object to use an INNER JOIN between the Customer and Orders tables.
C) Override the Update operation of the DataContext object.
D) Override the Delete operation of the DataContext object.

3. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
2008 database.
You need to ensure that the application connects to the database server by using SQL Server
authentication.
Which connection string should you use?

A) SERVER=MyServer; DATABASE=AdventureWorks; Integrated Security=SSPI; UID=sa; PWD=secret;
B) SERVER=MyServer; DATABASE=AdventureWorks; UID=sa; PWD=secret;
C) SERVER=MyServer; DATABASE=AdventureWorks; Trusted Connection=true;
D) SERVER=MyServer; DATABASE=AdventureWorks; Integrated Security=false;

4. You are developing a new feature in the application to display a list of all bundled products.
You need to write a LINQ query that will return a list of all bundled products. Which query expression should
you use?

A) context.Parts.OfType<Product>() .ToList() .Where(p => p.Descendants.Any(d => d is Product))
B) context.Parts.OfType<Product>() .Where(p => p.Descendants.Any(d => d is Product))
C) context.Parts.Cast<Product>() .ToList() .Where(p => p.Descendants.Any(d => d is Product))
D) context.Parts.Cast<Product>() .Where(p => p.Descendants.Any(d => d is Product))

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 model entities. The database includes objects based on the exhibit. (Click the Exhibit
button.)
The application includes the following code segment. (Line numbers are included for reference only.)
01 using (AdventureWorksEntities advWorksContext = new AdventureWorksEntities
()){
02 ...
03 }
You need to retrieve a list of all Products from todays sales orders for a specified customer.
You also need to ensure that the application uses the minimum amount of memory when retrieving the list.
Which code segment should you insert at line 02?

A) Contact customer = context.Contact.Where("it.ContactID = @customerId", new ObjectParameter("customerId", customerId)).First(); customer.SalesOrderHeader.Load(); foreach (SalesOrderHeader order in customer.SalesOrderHeader) {
order.SalesOrderDetail.Load();
if (order.OrderDate.Date == DateTime.Today.Date)
{
foreach (SalesOrderDetail item in order.SalesOrderDetail) { Console.WriteLine(String.Format("Product: {0} ", item.ProductID)); } } }
B) Contact customer = (from contact in context.Contact.Include ("SalesOrderHeader.SalesOrderDetail") select contact).FirstOrDefault(); foreach (SalesOrderHeader order in customer.SalesOrderHeader) {
if (order.OrderDate.Date == DateTime.Today.Date)
{
foreach (SalesOrderDetail item in order.SalesOrderDetail)
{
Console.WriteLine(String.Format("Product: {0} ", item.ProductID)); } } }
C) Contact customer = (from contact in context.Contact.Include ("SalesOrderHeader") select contact).FirstOrDefault(); foreach (SalesOrderHeader order in customer.SalesOrderHeader) {
order.SalesOrderDetail.Load();
if (order.OrderDate.Date == DateTime.Today.Date)
{
foreach (SalesOrderDetail item in order.SalesOrderDetail)
{
Console.WriteLine(String.Format("Product: {0} ", item.ProductID)); } } }
D) Contact customer = context.Contact.Where("it.ContactID = @customerId", new ObjectParameter("customerId", customerId)).First(); customer.SalesOrderHeader.Load(); foreach (SalesOrderHeader order in customer.SalesOrderHeader) {
if (order.OrderDate.Date == DateTime.Today.Date)
{
order.SalesOrderDetail.Load();
foreach (SalesOrderDetail item in order.SalesOrderDetail)
{
Console.WriteLine(String.Format("Product: {0} ", item.ProductID)); } } }

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