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QUESTION 201
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 load records from the Customers table into a DataSet object named dataset. You need to retrieve the value of the City field from the first and last records in the Customers table. Which code segment should you use?

A.    DataTable dt = dataset.Tables[“Customers”];
string first = dt.Rows[0][“City”].ToString();
string last = dt.Rows[dt.Rows.Count – 1][“City”].ToString();
B.    DataTable dt = dataset.Tables[“Customers”];
string first = dt.Rows[0][“City”].ToString();
string last = dt.Rows[dt.Rows.Count][“City”].ToString();
C.    DataRelation relationFirst = dataset.Relations[0];
DataRelation relationLast = dataset.Relations[dataset.Relations.Count – 1];
string first = relationFirst.childTable.Columns[“City”].ToString();
string last = relationLast.childTable.Columns[“City”].ToString()
D.    DataRelation relationFirst = dataset.Relations[0];
DataRelation relationLast = dataset.Relations[dataset.Relations.Count];
string first = relationFirst.childTable.Columns[“City”].ToString();
string last = relationLast.childTable.Columns[“City”].ToString();

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QUESTION 181
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.    Function
B.    FunctionImport
C.    Dependent
D.    Association
E.    DefiningExpression

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December 18, 2015 admin

QUESTION 161
The database contains orphaned Color records that are no longer connected to Part records. You need to clean up the orphaned records. You have an existing ContosoEntities context object named context. Which code segment should you use?

A.    var unusedColors = context.Colors.
Where(c => !c.Parts.Any()).ToList();
foreach (var unused in unusedColors){
context.DeleteObject(unused)
}
context.SaveChanges();
B.    context.Colors.TakeWhile(c => !c.Parts.Any());
context.SaveChanges();
C.    context.Colors.ToList().RemoveAll(c => !c.Parts.Any());
context.SaveChanges();
D.    var unusedColors = context.Colors.Where(c => !c.Parts.Any());
context.DeleteObject(unusedColors);
context.SaveChanges();

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December 11, 2015 admin

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QUESTION 141
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 a Microsoft ADO.NET SQL Server managed provider. When a connection fails, the application logs connection information, including the full connection string. The information is stored as plain text in a .config file. You need to ensure that the database credentials are secure. Which connection string should you add to the .config file?

A.    Data Source=myServerAddress; Initial Catalog=myDataBase; Integrated Security=SSPI;
Persist Security Info=false;
B.    Data Source=myServerAddress; Initial Catalog=myDataBase; Integrated Security=SSPI;
Persist Security Info=true;
C.    Data Source=myServerAddress; Initial Catalog=myDataBase; User Id=myUsername;
Password=myPassword; Persist Security Info=false;
D.    Data Source=myServerAddress; Initial Catalog=myDataBase; User Id=myUsername;
Password=myPassword; Persist Security Info=true;

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December 11, 2015 admin

QUESTION 121
You want to execute a SQL insert statement from your client application, so you set the CommandText property of the command object and open the connection. Which method will you execute on the command?

A.    ExecuteScalar
B.    ExecuteXmlReader
C.    ExecuteReader
D.    ExecuteNonQuery

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QUESTION 101
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application. You use the ADO.NET Entity Framework Designer to model entities. You need to create a Plain Old CLR Object (POCO) class that can be used with the ObjectContext.CreateObject method to create a proxy. What should you do?

A.    Create a custom data class that has a Protected constructor that does not have parameters.
B.    Create a custom data class in which all properties and methods are virtual.
C.    Create a custom data class that is abstract.
D.    Create a custom data class that is sealed.

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QUESTION 81
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to develop an application that uses LINQ to SQL. The application contains the following model. Each region contains a single vendor. Customers order parts from the vendor that is located in their region. You need to ensure that each row in the Customer table references the appropriate row from the Vendor table. Which code segment should you use?

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QUESTION 61
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. You add the following table to the database:
CREATE TABLE ObjectCache (Id INT IDENTITY PRIMARY KEY, SerializedObjectData XML)
You write the following code segment to retreive records from the ObjectCache table. (Line numbers are included for reference only.)
01 string s = GetConnectionStringFromConfigFile(“xmldb”);
02 using (SqlConnection conn = new SqlConnection(s))
03    using (SqlCommand cmd = new SqlCommand(“select * from ObjectCache”, conn))
04    {
05       conn.Open();
06       SqlDataReader rdr = cmd.ExecuteReader();
07       while(rdr.Read())
08       {
09          …
10          DeserializeObject(obj);
11       }
12    }
You need to retreive the data from the SerializedObjectData column and pass it to a method named DeserializeObject. Which line of code should you insert at line 09?

A.    XmlReader obj = (XmlReader)rdr[1];
B.    SByte obj = (SByte)rdr[1];
C.    String obj = (String)rdr[1];
D.    Type obj = (Type)rdr[1];

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QUESTION 41
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 create the classes shown in the following exhibit. You add the following code segment to the application. (Line numbers are included for reference only.)
01 public void QueryPlayers (List <League> leagues) {
02 …
03 }
You create a LINQ query to retrieve a collection of Player objects. You need to ensure that the collection includes all the players from each team and every league. Which code segment should you insert at line 02?

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QUESTION 21
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 stores user names and passwords in the database. You need to ensure that users cannot read passwords extracted from the database. What should you do?

A.    Encrypt stored passwords by using the RC2CryptoServiceProvider class.
B.    Encrypt stored passwords by using the TripleDESCryptoServiceProvider class.
C.    Append a random salt to the password by using the RNGCryptoServiceProvider class. Encrypt stored passwords by using the RijndaelManaged class.
D.    Append a random salt to the password by using the RNGCryptoServiceProvider class. Hash stored passwords by using the SHA1CryptoServiceProvider class.

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