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最新的 MCSA 70-457 免費考試真題:

1. You administer a Microsoft SQL Server 2012 database that contains a table named OrderDetail. You discover that the NCI_OrderDetail_CustomerID non-clustered index is fragmented. You need to reduce fragmentation. You need to achieve this goal without taking the index offline. Which Transact-SQL batch should you use?

A) ALTER INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID REORGANIZE
B) ALTER INDEX ALL ON OrderDetail REBUILD
C) CREATE INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID WITH DROP EXISTING
D) ALTER INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID REBUILD

2. 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:

3. You create an availability group named HaContoso that has replicas named Server01/HA, Server02/HA, and Server03/HA. Currently, Server01l/HA is the primary replica. You need to ensure that the following requirements are met:
Backup operations occur on Server02/HA.
If Server02/HA is unavailable, backup operations occur on Server03/HA.
Backup operations do not occur on Server01/HA.
How should you configure HaContoso?

A) Set the backup preference of HaContoso to Secondary only.
Set the backup priority of Server02/HA to 10.
Set the backup priority of Server03/HA to 20.
B) Set the backup preference of HaContoso to Secondary only.
Set the backup priority of Server02/HA to 20.
Set the backup priority of Server03/HA to 10.
C) Set the backup preference of HaContoso to Prefer Secondary.
Set the backup priority of Server02/HA to 20.
Set the backup priority of Server03/HA to 10.
D) Set the exclude replica of Server01/HA to true.
Set the backup priority of Server02/HA to 10.
Set the backup priority of Server03/HA to 20.

4. You develop a Microsoft SQL Server 2012 database that contains a heap named OrdersHistoncal. You write the following Transact-SQL query:
INSERT INTO OrdersHistorical SELECT * FROM CompletedOrders
You need to optimize transaction logging and locking for the statement. Which table hint should you use?

A) UPDLOCK
B) HOLDLOCK
C) ROWLOCK
D) TABLOCK
E) XLOCK

5. You administer a Microsoft SQL Server 2012 instance. The instance contains a database that supports a retail sales application. The application generates hundreds of transactions per second and is online 24 hours per day and 7 days per week. You plan to define a backup strategy for the database. You need to ensure that the following requirements are met:
No more than 5 minutes worth of transactions are lost.
Data can be recovered by using the minimum amount of administrative effort.
What should you do? Choose all that apply.

A) Configure the database to use the SIMPLE recovery model.
B) Configure the database to use the FULL recovery model.
C) Create a DIFFERENTIAL database backup every 4 hours.
D) Create a DIFFERENTIAL database backup every 24 hours.
E) Create a FULL database backup every 24 hours.
F) Create a LOG backup every 5 minutes.

問題與答案：