单项选择题 Asystemadministratorneedstoprovisionstoragefora200GBdatabase.Thedatabasemust haveextremelylowseektime.WhichofthefollowingistheBESTsolution？（）

单项选择题 Adatacenterdirectorimplementsanewsecuritymeasureinresponsetomultipleequipmentthefts fromthedatacenter.Thenewsecuritymeasurerequirespeopleenteringorleavingthedata center togothroughanextrasecurearea.Onceenteringtheareapeoplemustpresenttwoformsof authenticationtoleave.Whichofthefollowingsecuritymeasuresdoesthisdescribe？（）

单项选择题 An administrator needs to maintain 1TB of storage space for a server. A performance critical application will use this storage space for a database. The database will be replicated between multipleservers. Cost and performance are the most important considerations.  Which of the following RAID configurations would be the BEST choice for the storage array？（）