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Microsoft 070-516 Exam Syllabus Topics:

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

1. 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 a DataTable named OrderDetailTable that has the following columns:
-ID
-OrderID
-ProductID
-Quantity
-LineTotal
Some records contain a null value in the LineTotal field and 0 in the Quantity field. You write the following code segment. (Line numbers are included for reference only.)
01 DataColumn column = new DataColumn("UnitPrice", typeof(double));
02 ...
03 OrderDetailTable.Columns.Add(column);
You need to add a calculated DataColumn named UnitPrice to the OrderDetailTable object.
You also need to ensure that UnitPrice is set to 0 when it cannot be calculated.
Which code segment should you insert at line 02?

A) column.Expression = "LineTotal/Quantity";
B) column.Expression = "LineTotal/ISNULL(Quantity, 1)";
C) column.Expression = "iif(Quantity > 0, LineTotal/Quantity, 0)";
D) column.Expression = "if(Quantity > 0, LineTotal/Quantity, 0)";

2. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. The application contains the following XML document:
<bib> <book title="TCP/IP Illusrated" year="1994">
<author>Author1</author>
</book>
<book title="Programming in UNIX" year="1992">
<author>Author1</author>
<author>Author2</author>
<author>Author3</author>
</book>
<book title="Data on the web" year="2000">
<author>Author4</author>
<author>Author3</author>
</book> </bib>
You add the following code fragment. (Line numbers are included for reference only.)
01 public IEnumerable<XElement> GetBooks(string xml)
02 {
03 XDocument doc = XDocument.Parse(xml);
04 ...
05 }
You need to return a list of book XML element that are authored by Author1. Which code segment should you insert at line 04?

A) return doc.Element("bib").Elements() .SelectMany(el => el.Elements() .Where(e2 => e2.Equals(new XElement("author", "Author1"))));
B) return doc.Elements("bib").Elements()
.Where(e1 => e1.Elements().Any(e2 => e2.Equals(new XElement("author", "Author1"))));
C) return doc.Elements("bib").Elements() .Where(e1 => e1.Elements().Any(e2 => (string)e2 == "Author1"));
D) return doc.Element("bib").Elements() .SelectMany(el => el.Elements() .Where(e2 => (string)e2 == "Author1"));

3. You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application.
You create a Database Access Layer (DAL) that is database-independent. The DAL includes the following
code segment.
(Line numbers are included for reference only.)
01 static void ExecuteDbCommand(DbConnection connection)
02 {
03 if (connection != null){
04 using (connection){
05 try{
06 connection.Open();
07 DbCommand command = connection.CreateCommand();
08 command.CommandText = "INSERT INTO Categories (CategoryName)
VALUES ('Low Carb')";
09 command.ExecuteNonQuery();
10 }
11 ...
12 catch (Exception ex){
13 Trace.WriteLine("Exception.Message: " + ex.Message);
14 }
15 }
16 }
17 }
You need to log information about any error that occurs during data access.
You also need to log the data provider that accesses the database. Which code segment should you insert
at line 11?

A) catch (DbException ex){ Trace.WriteLine("ExceptionType: " + ex.InnerException.Source);
Trace.WriteLine("Message: " + ex.InnerException.Message);
}
B) catch (DbException ex){ Trace.WriteLine("ExceptionType: " + ex.Source);
Trace.WriteLine("Message: " + ex.Message);
}
C) catch (OleDbException ex){ Trace.WriteLine("ExceptionType: " + ex.InnerException.Source);
Trace.WriteLine("Message: " + ex.InnerException.Message);
}
D) catch (OleDbException ex){ Trace.WriteLine("ExceptionType: " + ex.Source);
Trace.WriteLine("Message: " + ex.Message);
}

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

5. You use Microsoft .NET Framework 4.0 to develop an application that connects to a Microsoft SQL Server
2008 database.
The application includes a table adapter named taStore, which has the following DataTable.

There is a row in the database that has a ProductID of 680. You need to change the Name column in the
row to "New Product Name".
Which code segment should you use?

A) var dt = new taStore.ProductDataTable(); var ta = new taStoreTableAdapters.ProductTableAdapter(); ta.Fill(dt); var dv = new DataView(); dv.RowFilter = "680"; dv[0]["Name"] = "New Product Name"; ta.Update(dt);
B) var dt = new taStore.ProductDataTable(); var row = dt.NewProductRow(); row.ProductID = 680; row.Name = "New Product Name"; dt.Rows.Add(row) ;
C) var dt = new taStore.ProductDataTable(); var ta = new taStoreTableAdapters.ProductTableAdapter(); ta.Fill(dt); taStore.ProductRow row = (taStore.ProductRow)dt.Rows.Find(680) ; row.Name = "New Product Name"; ta.Update(row);
D) var ta = new taStoreTableAdapters.ProductTableAdapter(); var dt = ta.GetData(); var row = dt.Select("680") ; row[0]["Name"] = "New Product Name"; ta.Update(row);

Solutions: