单项选择题
A. The server's memory
B. The server's RAID controller battery
C. The server's processor
D. The server's NIC teaming configuration
单项选择题 AdiskdrivefailedinaRAID5array.Afterreplacingthediskdrive，usersarestillreportingthat accesstotheserverisveryslow.WhichofthefollowingBESTexplainstheproblem？（）
单项选择题 WhichofthefollowingservertypesperformsthesamefunctionastheHOSTSfile？（）
单项选择题 AcompanyhasrecentlyswitchedISPsandisbeingassignedanewblockofpublicaddresses.ThepublicwebandFTPserversmustbere-addressedtosupportthischange.AfterchangingIP addressesandupdatingtheDNSrecordsmanycustomershavereportedthattheyarenotableto accesstheweborFTPservers.Whichofthefollowingcouldhavebeendonepriortomaking thesechangestomakeitmoretransparenttousers？（）