Online Access Free 70-457 Exam Questions

You administer a Microsoft SQL Server 2012 server that hosts a transactional database and a reporting database. The transactional database is updated through a web application and is operational throughout the day. The reporting database is only updated from the transactional database. The recovery model and backup schedule are configured as shown in the following table: At 14:00 hours, you discover that pages 71, 520, and 713 on one of the database files are corrupted on the reporting database. You need to ensure that the databases are restored. You also need to ensure that data loss is minimal. What should you do?

• A.Restore the latest full backup, and restore the latest differential backup. Then, restore each log backup taken before the time of failure from the most recent differential backup.
• B.Restore the latest full backup.
• C.Restore the latest full backup. Then, restore the latest differential backup.
• D.Perform a page restore.
• E.Perform a partial restore.
• F.Restore the latest full backup, and restore the latest differential backup. Then, restore the latest log backup.
• G.Perform a point-in-time restore.
• H.Restore the latest full backup. Then, restore each differential backup taken before the time of failure from the most recent full backup.

You use Microsoft SQL Server 2012 to develop a database application. You create two tables by using the following table definitions.

Which six Transact-SQL statements should you use? (To answer, move the appropriate SQL statements from the list of statements to the answer area and arrange them in the correct order.)
Build List and Reorder:

Correct Answer:

Explanation:
--Burgos - NO

You use Microsoft SQL Server 2012 to write code for a transaction that contains several statements. There is high contention between readers and writers on several tables used by your transaction. You need to minimize the use of the tempdb space. You also need to prevent reading queries from blocking writing queries. Which isolation level should you use?

• A.READ COMMITTED SNAPSHOT
• B.SNAPSHOT
• C.REPEATABLE READ
• D.SERIALIZABLE

You administer three Microsoft SQL Server 2012 servers named ServerA, ServerB, and ServerC. ServerA is the acting principal and ServerB is the mirror. You need to add ServerC as a witness to the existing mirroring session between ServerA and ServerB. You need to achieve this goal without delaying synchronization. Which three actions should you perform in sequence? (To answer, move the appropriate actions from the list of actions to the answer area and arrange them in the correct order.)
Build List and Reorder:

Correct Answer:

Explanation:
--Burgos - NO Verified answer as correct. Reference: http://msdn.microsoft.com/en-us/library/ms190430.aspx

You use Microsoft SQL Server 2012 to develop a database application. You create a stored procedure named dbo.ModifyData that can modify rows. You need to ensure that when the transaction fails, dbo. ModifyData meets the following requirements:
Does not return an error
Closes all opened transactions
Which Transact-SQL statement should you use?

• A.BEGIN TRANSACTION
  BEGIN TRY
  EXEC dbo.ModifyData
  COMMIT TRANSACTION
  END TRY
  BEGIN CATCH
  IF @@ERROR != 0
  ROLLBACK TRANSACTION;
  THROW;
  END CATCH
• B.BEGIN TRANSACTION
  BEGIN TRY
  EXEC dbo.ModifyData
  COMMIT TRANSACTION
  END TRY
  BEGIN CATCH
  IF @@TRANCOUNT = 0
  ROLLBACK TRANSACTION;
  THROW;
  END CATCH
• C.BEGIN TRANSACTION
  BEGIN TRY
  EXEC dbo.ModifyData
  COMMIT TRANSACTION
  END TRY
  BEGIN CATCH
  IF @@ERROR != 0
  ROLLBACK TRANSACTION;
  END CATCH
• D.BEGIN TRANSACTION
  BEGIN TRY
  EXEC dbo.ModifyData
  COMMIT TRANSACTION
  END TRY
  BEGIN CATCH
  IF @@ TRANCOUNT = 0
  ROLLBACK TRANSACTION;
  END CATCH