This page was exported from Lead2pass New Updated Exam Questions [ https://www.getfreevce.com ] Export date:Sun Dec 22 11:43:35 2024 / +0000 GMT ___________________________________________________ Title: Free Download Lead2pass Microsoft 70-457 Exam Dumps and Questions (11-20) --------------------------------------------------- Lead2pass provide the best training material for Microsoft 70-457 certification exams. When you use our products Lead2pass ensure that you emerge successful in your certification exam. We provide with the latest 70-457 exam dumps, you can easily pass your certification exam with our exam dumps. QUESTION 11 Your database contains two tables named DomesticSalesOrders and InternationalSalesOrders. Both tables contain more than 100 million rows. Each table has a Primary Key column named SalesOrderId. The data in the two tables is distinct from one another. Business users want a report that includes aggregate information about the total number of global sales and total sales amounts. You need to ensure that your query executes in the minimum possible time. Which query should you use? A.    Option A B.    Option B C.    Option C D.    Option D Answer: A Explanation: http://msdn.microsoft.com/en-us/library/ms180026.aspx http://blog.sqlauthority.com/2009/03/11/sql-server-difference-between-union-vs-union-all- optimal-performance-comparison/ QUESTION 12 You use a Microsoft SQL Server 2012 database. You want to create a table to store Microsoft Word documents. You need to ensure that the documents must only be accessible via Transact-SQL queries. Which Transact-SQL statement should you use? A.    Option A B.    Option B C.    Option C D.    Option D Answer: A Explanation: http://msdn.microsoft.com/en-us/library/gg471497.aspx http://msdn.microsoft.com/en-us/library/ff929144.aspx QUESTION 13 You are a database developer at an independent software vendor. You create stored procedures that contain proprietary code. You need to protect the code from being viewed by your customers. Which stored procedure option should you use? A.    ENCRYPTBYKEY B.    ENCRYPTION C.    ENCRYPTBYPASSPHRASE D.    ENCRYPTBYCERT Answer: B Explanation: http://technet.microsoft.com/en-us/library/bb510663.aspx http://technet.microsoft.com/en-us/library/ms174361.aspx http://msdn.microsoft.com/en-us/library/ms187926.aspx http://technet.microsoft.com/en-us/library/ms190357.aspx http://technet.microsoft.com/en-us/library/ms188061.aspx QUESTION 14 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.    CREATE INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID WITH DROP EXISTING B.    ALTER INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID REORGANIZE C.    ALTER INDEX ALL ON OrderDetail REBUILD D.    ALTER INDEX NCI_OrderDetail_CustomerID ON OrderDetail.CustomerID REBUILD Answer: B Explanation: http://msdn.microsoft.com/en-us/library/ms188388.aspx QUESTION 15 You develop a Microsoft SQL Server 2012 database. The database is used by two web applications that access a table named Products. You want to create an object that will prevent the applications from accessing the table directly while still providing access to the required data. You need to ensure that the following requirements are met: - Future modifications to the table definition will not affect the applications' ability to access data. - The new object can accommodate data retrieval and data modification. You need to achieve this goal by using the minimum amount of changes to the applications. What should you create for each application? A.    Synonyms B.    Common table expressions C.    Views D.    Temporary tables Answer: C Explanation: http://msdn.microsoft.com/en-us/library/ms190174.aspx QUESTION 16 You develop a Microsoft SQL Server 2012 database. You need to create a batch process that meets the following requirements: - Returns a result set based on supplied parameters. - Enables the returned result set to perform a join with a table. Which object should you use? A.    Inline user-defined function B.    Stored procedure C.    Table-valued user-defined function D.    Scalar user-defined function Answer: C QUESTION 17 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.    HOLDLOCK B.    ROWLOCK C.    XLOCK D.    UPDLOCK E.    TABLOCK Answer: E Explanation: http://technet.microsoft.com/en-us/library/ms189857.aspx http://msdn.microsoft.com/en-us/library/ms187373.aspx QUESTION 18 You develop a Microsoft SQL Server 2012 database. You need to create and call a stored procedure that meets the following requirements: - Accepts a single input parameter for CustomerID. - Returns a single integer to the calling application. Which Transact-SQL statement or statements should you use? (Each correct answer presents part of the solution. Choose all that apply.) A.    Option A B.    Option B C.    Option C D.    Option D E.    Option E F.    Option F Answer: CF QUESTION 19 You use a Microsoft SQL Server 2012 database that contains two tables named SalesOrderHeader and SalesOrderDetail. The indexes on the tables are as shown in the exhibit. (Click the Exhibit button.) You write the following Transact-SQL query: You discover that the performance of the query is slow. Analysis of the query plan shows table scans where the estimated rows do not match the actual rows for SalesOrderHeader by using an unexpected index on SalesOrderDetail. You need to improve the performance of the query. What should you do? A.    Use a FORCESCAN hint in the query. B.    Add a clustered index on SalesOrderId in SalesOrderHeader. C.    Use a FORCESEEK hint in the query. D.    Update statistics on SalesOrderId on both tables. Answer: D Explanation: http://msdn.microsoft.com/en-us/library/ms187348.aspx QUESTION 20 Your database contains a table named Purchases. The table includes a DATETIME column named PurchaseTime that stores the date and time each purchase is made. There is a non-clustered index on the PurchaseTime column. The business team wants a report that displays the total number of purchases made on the current day. You need to write a query that will return the correct results in the most efficient manner. Which Transact-SQL query should you use? A.    SELECT COUNT(*) FROM Purchases WHERE PurchaseTime = CONVERT(DATE, GETDATE()) B.    SELECT COUNT(*) FROM Purchases WHERE PurchaseTime = GETDATE() C.    SELECT COUNT(*) FROM Purchases WHERE CONVERT(VARCHAR, PurchaseTime, 112) = CONVERT(VARCHAR, GETDATE(), 112) D.    SELECT COUNT(*) FROM Purchases WHERE PurchaseTime >= CONVERT(DATE, GETDATE()) AND PurchaseTime < DATEADD(DAY, 1, CONVERT(DATE, GETDATE())) Answer: D Explanation: Two answers will return the correct results (the "WHERE CONVERT..." and "WHERE ... AND ... " answers). The correct answer for Microsoft would be the answer that is most "efficient". Anybody have a clue as to which is most efficient? In the execution plan, the one that I've selected as the correct answer is the query with the shortest duration. Also, the query answer with "WHERE CONVERT..." threw warnings in the execution plan... something about affecting CardinalityEstimate and SeekPlan. http://technet.microsoft.com/en-us/library/ms181034.aspx Lead2pass Microsoft 70-457 exam pack will raise your capability to understand exam basics and fundamentals in a more organized and flexible way. Once you have prepared effectively through Lead2pass Microsoft 70-457 exam pack you can predict about exam difficulty level, accordingly you can take several measures to cope with such difficulties and pass your exam easily. http://www.lead2pass.com/70-457.html --------------------------------------------------- Images: http://www.itexamquiz.com/lead2pass/l2pimages/f9e451cdb68c_F066/wps2BBB.tmp_thumb_thumb.png http://www.itexamquiz.com/lead2pass/l2pimages/f9e451cdb68c_F066/wps74FB.tmp_thumb_thumb.png http://www.itexamquiz.com/lead2pass/l2pimages/f9e451cdb68c_F066/wps76B.tmp_thumb2_thumb.png http://www.itexamquiz.com/lead2pass/l2pimages/f9e451cdb68c_F066/wps8CA2.tmp_thumb_thumb.png http://www.itexamquiz.com/lead2pass/l2pimages/f9e451cdb68c_F066/wpsC668.tmp_thumb_thumb.png --------------------------------------------------- --------------------------------------------------- Post date: 2014-12-22 09:18:57 Post date GMT: 2014-12-22 09:18:57 Post modified date: 2014-12-22 09:18:57 Post modified date GMT: 2014-12-22 09:18:57 ____________________________________________________________________________________________ Export of Post and Page as text file has been powered by [ Universal Post Manager ] plugin from www.gconverters.com