Microsoft 70-457

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Microsoft Transition Your MCTS on SQL Server 2008 to MCSA: SQL Server 2012, Part 1 認定 70-457 試験問題:

1. You have a database that contains the tables shown in the exhibit. (Click the Exhibit button.)

You have an application named Appl. You have a parameter named @Count that uses the int data type. App1 is configured to pass @Count to a stored procedure. You need to create a stored procedure named usp_Customers for Appl. Usp_Customers must meet the following requirements:
NOT use object delimiters.
Minimize sorting and counting.
Return only the last name of each customer in alphabetical order.
Return only the number of rows specified by the @Count parameter.
The solution must NOT use BEGIN and END statements.
Which code segment should you use?
To answer, type the correct code in the answer area.

A) CREATE PROCEDURE usp_Customers @Count int AS SELECT TOP(@Count) LastName FROM Customers ORDER BY LastName

2. You have a database that contains the tables as shown in the exhibit. (Click the Exhibit button.)

You need to create a query that returns a list of products from Sales.ProductCatalog. The solution must meet the following requirements:
UnitPrice must be returned in descending order.
The query must use two-part names to reference the table.
The query must use the RANK function to calculate the results.
The query must return the ranking of rows in a column named PriceRank.
The list must display the columns in the order that they are defined in the table.
PriceRank must appear last.
Which code segment should you use?
To answer, type the correct code in the answer area.

A) SELECT ProductCatalog.CatID, ProductCatalog.CatName, ProductCatalog. ProductID, ProductCatalog.ProdName, ProductCatalog.UnitPrice, RANK() OVER (ORDER BY ProductCatalog.UnitPrice DESC) AS PriceRank FROM Sales.ProductCatalog ORDER BY ProductCatalog.UnitPrice DESC
B) SELECT ProductCatalog.CatID, ProductCatalog.CatName, ProductCatalog. ProductID, ProductCatalog.ProdName, ProductCatalog.UnitPrice, RANK() OVER (PARTITION BY ProductCatalog.UnitPrice ORDER BY ProductCatalog. UnitPrice DESC) AS PriceRank FROM Sales.ProductCatalog ORDER BY ProductCatalog.UnitPrice DESC

3. You administer a Microsoft SQL Server 2012 instance named SQL2012 that hosts an OLTP database of 1 terabyte in size. The database is modified by users only from Monday through Friday from 09:00 hours to
17:00 hours. Users modify more than 30 percent of the data in the database during the week. Backups are performed as shown in the following schedule:

The Finance department plans to execute a batch process every Saturday at 09:00 hours. This batch process will take a maximum of 8 hours to complete. The batch process will update three tables that are 10 GB in size. The batch process will update these tables multiple times. When the batch process completes, the Finance department runs a report to find out whether the batch process has completed correctly. You need to ensure that if the Finance department disapproves the batch process, the batch operation can be rolled back in the minimum amount of time. What should you do on Saturday?

A) Record the LSN of the transaction log at 08:59 hours. Perform a transaction log backup at 17:01 hours.
B) Create a marked transaction in the transaction log at 08:59 hours. Perform a transaction log backup at
08:59 hours.
C) Perform a differential backup at 08:59 hours.
D) Create a marked transaction in the transaction log at 08:59 hours. Perform a transaction log backup at
17:01 hours.
E) Record the LSN of the transaction log at 08:59 hours. Perform a transaction log backup at 08:59 hours.
F) Create a database snapshot at 08:59 hours.

4. 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) SERIALIZABLE
B) REPEATABLE READ
C) SNAPSHOT
D) READ COMMITTED SNAPSHOT

5. You develop a database for a travel application. You need to design tables and other database objects. You create the Airline_Schedules table. You need to store the departure and arrival dates and times of flights along with time zone information. What should you do?

A) Add a LOOP hint to the query.
B) Include a SET FORCEPLAN ON statement before you run the query.
C) Add a columnstore index to cover the query.
D) Add an INCLUDE clause to the index.
E) Add a FORCESCAN hint to the Attach query.
F) Enable the Optimize for ad hoc workloads option.
G) Cover the unique clustered index with a columnstore index.
H) Add a FORCESEEK hint to the query.
I) Include a SET STATISTICS PROFILE ON statement before you run the query.
J) Add a HASH hint to the query.

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