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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 = string.Format("SELECT * FROM " + " Customer Where CompanyName LIKE {0}",
new SqlCommand("@companyName", string.format("%{0}%", companyName))); var cmd = new SqlCommand(SQL, con);
B) string SQL = "SELECT * FROM Customer Where " + "CompanyName LIKE @companyName"; var cmd = new SqlCommand(SQL,con); cmd.Parameters.AddWithValue("@companyName", string.Format("%{0}%", companyName));
C) string SQL = "SELECT * FROM Customer Where " + "CompanyName LIKE @companyName"; var cmd = new SqlCommand(SQL,con); var param = new SqlParameter ("@companyName", string.Format("%{0}%", companyName));
D) string SQL = "SELECT" * FROM Customer @companyName; var cmd = new sqlcommand(SQL,con); cmd.Parameters.AddWithValue("companyName", string.format("where companyName LIKE '%{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 database. You use Entity SQL of the ADO.NET Entity
Framework to retrieve data from the database.
You need to define a custom function in the conceptual model. You also need to ensure that the function
calculates a value based on properties of the object.
Which two XML element types should you use? (Each correct answer presents part of the solution. Choose
two.)

A) Dependent
B) DefiningExpression
C) Association
D) Function
E) FunctionImport

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.
You need to ensure that the model and mapping files are not deployed as application resources. What
should you do?

A) Modify the connection string in the application's .config file to refer to the absolute physical path to the .edmx file.
B) Modify the connection string in the application's .config file to refer to the relative path to the .edmx file.
C) Set the value of the .edmx file's Build Action property to Copy to Output.
D) Set the value of the .edmx file's Metadata Artifact Processing property to Copy to Output Directory.

4. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4 to develop an application. A file named books.xml contains the following XML.
<bib>
<book title="Programming in Unix" year="1992">
<author>Author1</author>
<author>Author2</author>
<author> Author 3 </author>
</book> </bib>
The application must generate an XML result that contains an XML element named BookTitle for each
book. The text content of the element must contain the title of the book.
You need to create a query that generates the new XML result. What should you do?

A) XDocument document = XDocument.Load("books.xml");
var query = from node in document.Descendants()
where node.Name.LocalName == "book"
select new XElement("BookTitle", node.FirstAttribute.Value);
B) XDocument document = XDocument.Load("books.xml");
var query = from node in document.Descendants()
where node.Name.LocalName == "book"
select new XElement("BookTitle").Value = node.FirstAttribute.Value;
C) XDocument document = XDocument.Load("books.xml");
var query = from node in document.DescendantNodes()
where node.ToString() == "book"
select new XText("BookTitle" + node.ToString());
D) XDocument document = XDocument.Load("books.xml");
var query = from node in document.DescendantNodes()
where node.ToString() == "book"
select new XElement("BookTitle", node.ToString());

5. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
2008 database.
You add the following stored procedure to the database.
CREATE PROCEDURE dbo.GetClassAndStudents AS BEGIN
SELECT * FROM dbo.Class
SELECT * FROM dbo.Student
END
You create a SqIConnection named conn that connects to the database.
You need to fill a DataSet from the result that is returned by the stored procedure.
The first result set must be added to a DataTable named Class, and the second result set must be added to
a DataTable named Student.
Which code segment should you use?

A) DataSet ds = new DataSet(); SqlDataAdapter ad = new SqlDataAdapter("GetClassAndStudents", conn); ad.MissingMappingAction = MissingMappingAction.Ignore; ad.Fill(ds, "Class"); ad.Fill(ds, "Student");
B) DataSet ds = new DataSet(); SqlDataAdapter ad = new SqlDataAdapter("GetClassAndStudents", conn); ad.TableMappings.Add("Table", "Class"); ad.TableMappings.Add("Table1", "Student") ; ad.Fill(ds) ;
C) DataSet ds = new DataSet(); SqlDataAdapter ad = new SqlDataAdapter("GetClassAndStudents", conn); ad.Fill(ds);
D) DataSet ds = new DataSet(); SqlDataAdapter ad = new SqlDataAdapter("GetClassAndStudents", conn); ds.Tables.Add("Class"); ds.Tables.Add("Student"); ad.Fill(ds);

Solutions: