70-773 Exam Dumps | You plan to analyze data on a local computer. To improve performance, you plan to alternate the operation

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Microsoft.70-773.v2018-04-04.q39
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Question 14/39

You plan to analyze data on a local computer. To improve performance, you plan to alternate the operation between a Microsoft SQL Server and the local computer.
You need to run complex code on the SQL Server, and then revert to the local compute context.
Which R code segment should you use?

A. sqlCompute <- RxInSqlServer(connectionString = "Driver=SQL Server;Server = myServer; Database = TestDB; Uid = myID; Pwd = myPwd;")sqlPackagePaths <- RxFindPackage(package = "RevoScaleR", computeContext = sqlServerCompute)

B. sqlCompute <- RxInSqlServer(connectionstring = sqlConnString, shareDir = sqlShareDir,wait = sqlWait, consoleOutput = sqlConsoleOutput)rxSetComputeContext("local")x <- 1:10rxExec(print, x, elemType = "cores", timesToRun = 10)rxSetComputeContext("RxLocalParallel")

C. sqlCompute <- RxInSqlServer(connectionstring = sqlConnString, shareDir = sqlShareDir,wait = sqlWait, consoleOutput = sqlConsoleOutput)rxSetComputeContext("sqlCompute")x <- 1:10rxExec (print, x, elemType = "cores", timesToRun = 10)rxSetComputeContext("local")

D. sqlCompute <- RxInSqlServer(connectionstring = sqlConnString, shareDir = sqlShareDir,wait = sqlWait, consoleOutput = sqlConsoleOutput)rxSetComputeContext("local")x <- 1:10rxExec(print, x, elemType = "cores", timesToRun = 10)rxSetComputeContext("sqlCompute")

Correct Answer: D

Explanation/Reference:
Explanation:
References:https://docs.microsoft.com/en-us/sql/advanced-analytics/tutorials/deepdive-define-and-use- compute-contexts

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