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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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QUESTION 1
You use Microsoft Visual Studio 2010 and Microsoft .NET Framework 4.0 to create an application. You manually create your own Context class named AdventureWorksDB that inherits from ObjectContext. You need to use AdventureWorksDB to invoke a stored procedure that is defined in the data source. Which method should you call?

A.    Translate
B.    ExecuteFunction
C.    ExecuteStoreQuery
D.    ExecuteStoreCommand

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