FreeDatabricksCertified DataEngineerProfessional PracticeExamQ&As DatabricksCertifiedDataEngineerProfessionalExam https://www.passcert.com/Databricks-Certified-Data-Engineer-Professional.html
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 1.Adataengineerhaswrittenthefollowingquery: 1.SELECT* 2.FROMjson.`/path/to/json/file.json`; Thedataengineerasksacolleagueforhelptoconvertthisqueryfor useinaDeltaLiveTables(DLT)pipeline.Thequeryshouldcreatethe firsttableintheDLTpipeline. Whichofthefollowingdescribesthechangethecolleagueneedsto maketothequery? A.TheyneedtoaddaCREATELIVETABLEtable_nameASlineatthe beginningofthequery B.Theyneedtoaddthecloud_files(...)wrappertotheJSONfilepath C.TheyneedtoaddaCREATEDELTALIVETABLEtable_nameASline atthebeginningofthequery D.Theyneedtoaddalive.prefixpriortojson.intheFROMline E.TheyneedtoaddaCOMMENTlineatthebeginningofthequery Answer:A
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 2.Whichofthefollowingdescribesabenefitofadatalakehousethatis unavailableinatraditionaldatawarehouse? A.Adatalakehousecouplesstorageandcomputeforcompletecontrol B.Adatalakehouseprovidesarelationalsystemofdatamanagement C.Adatalakehouseutilizesproprietarystorageformatsfordata D.Adatalakehouseenablesbothbatchandstreaminganalytics E.Adatalakehousecapturessnapshotsofdataforversioncontrolpurposes Answer:D
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 3.WhichofthefollowingstatementsdescribesDeltaLake? A.DeltaLakeisanopensourceplatformtohelpmanagethe completemachinelearninglifecycle B.DeltaLakeisanopenformatstoragelayerthatdeliversreliability, security,andper-formance C.DeltaLakeisanopensourcedatastorageformatfordistributed data D.DeltaLakeisanopensourceanalyticsengineusedforbigdata workloads E.DeltaLakeisanopenformatstoragelayerthatprocessesdata Answer:B
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 4.AdataengineeringteamhascreatedaseriesoftablesusingParquet datastoredinanexternalsys-tem.Theteamisnoticingthatafter appendingnewrowstothedataintheexternalsystem,theirqueries withinDatabricksarenotreturningthenewrows.Theyidentifythe cachingofthepreviousdataasthecauseofthisissue. Whichofthefollowingapproacheswillensurethatthedatareturned byqueriesisalwaysup-to-date? A.Thetablesshouldbeupdatedbeforethenextqueryisrun B.ThetablesshouldbeconvertedtotheDeltaformat C.Thetablesshouldberefreshedinthewritingclusterbeforethenext queryisrun D.Thetablesshouldbealteredtoincludemetadatatonotcache E.Thetablesshouldbestoredinacloud-basedexternalsystem Answer:B
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 5.Youareworkingonaemailspamfilteringassignment,while workingonthisyoufindthereisnewworde.g.HadoopExamcomes inemail,andinyoursolutionsyounevercomeacrossthiswordbefore, henceprobabilityofthiswordsiscomingineitheremailcouldbezero. Sowhichofthefollowingalgorithmcanhelpyoutoavoidzero probability? A.NaiveBayes B.LaplaceSmoothing C.LogisticRegression D.Alloftheabove Answer:B
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 6.Inmachinelearning,featurehashing,alsoknownasthehashing trick(byanalogytothekerneltrick),isafastandspace-efficientway ofvectorizingfeatures(suchasthewordsinalanguage),i.e., turningarbitraryfeaturesintoindicesinavectorormatrix.Itworks byapplyingahashfunctiontothefeaturesandusingtheirhash valuesmodulothenumberoffeaturesasindicesdirectly,ratherthan lookingtheindicesupinanassociativearray. Sowhatistheprimaryreasonofthehashingtrickforbuilding classifiers? A.Itcreatesthesmallermodels B.Itrequiresthelessermemorytostorethecoefficientsforthe model C.Itreducesthenon-significantfeaturese.g.punctuations D.Noisyfeaturesareremoved Answer:B
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 7.AdataengineerhascreatedaDeltatableaspartofadatapipeline. DownstreamdataanalystsnowneedSELECTpermissionontheDelta table. AssumingthedataengineeristheDeltatableowner,whichpartofthe DatabricksLakehousePlat-formcanthedataengineerusetograntthe dataanalyststheappropriateaccess? A.Jobs BDashboards B.DataExplorer C.Repos D.DatabricksFilesystem Answer:C
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 8.AdataengineerhasthreenotebooksinanELTpipeline.The notebooksneedtobeexecutedinaspecificorderforthepipelineto completesuccessfully.ThedataengineerwouldliketouseDeltaLive Tablestomanagethisprocess. Whichofthefollowingstepsmustthedataengineertakeaspartof implementingthispipelineusingDeltaLiveTables? A.TheyneedtocreateaDeltaLiveTablespipelinefromtheJobspage B.TheyneedtorefactortheirnotebooktousePythonandthedlt library C.TheyneedtocreateaDeltaLivetablespipelinefromtheCompute page D.TheyneedtocreateaDeltaLiveTablespipelinefromtheDatapage E.TheyneedtorefactortheirnotebooktouseSQLandCREATELIVE TABLEkeyword Answer:A
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 9.Twojuniordataengineersareauthoringseparatepartsofasingledatapipeline notebook.TheyareworkingonseparateGitbranchessotheycanpairprogram onthesamenotebooksimultaneously.Aseniordataengineerexperiencedin Databrickssuggeststhereisabetteralternativeforthistypeofcollaboration. Whichofthefollowingsupportstheseniordataengineer'sclaim? A.DatabricksNotebookssupportcommentingandnotificationcomments B.DatabricksNotebookssupportthecreationofinteractivedatavisualizations C.DatabricksNotebookssupportreal-timeco-authoringonasinglenotebook D.DatabricksNotebookssupporttheuseofmultiplelanguagesinthesame notebook E.DatabricksNotebookssupportautomaticchange-trackingandversioning Answer:C
FreeDatabricksCertifiedDataEngineerProfessionalPracticeExamFromPasscertforYourBestPreparation 10.Whichofthefollowinglocationshoststhedriverandworkernodes ofaDatabricks-managedclus-ter? A.Dataplane B.Controlplane C.DatabricksFilesystem D.Databrickswebapplication E.JDBCdatasource Answer:A