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Tag: PassLeader 70-516 exam questions

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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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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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