Which of the disk configuration provides the fastest write performance with fault tolerance？（）

单项选择题Asystemhasfive80GBdiskdrivesandhasarequirementtostore300GBofdata.Whichdiskconfigurationwillprovidefaulttolerancewhilestillmeetingdatastoragerequirements？（）

A.JBOD
B.RAID-5
C.RAID-0
D.RAID-1

单项选择题Asystemhasacriticalneedfornetworkservicesonasmallnetworkwithalimitednumberofhosts.Systemoverheadisnotaconcern.Whichofthefollowingshouldthesystemadministratordotohelpensureconnectivityintheeventofagatewayfailure？（）

A.Use the ifconfig command to enable dead gate detection
B.Use the no command to set active dead gateway detection
C.Use the route command to set active dead gateway detection
D.Add the line active_dgd=1 to the /etc/gated.conf command and refresh the gated daemon

单项选择题HowwouldthesystemadministratorturnonDynamicProcessorDeallocation？（）

A.Use the diag menu to set dynamic deallocation to ’on’
B.Use the chdev command to enable the ’cpuguard’ attribute of sys0
C.Use the cfgmgr command to change the ’monitor’ attribute of proc0
D.Use the smitty command with the fast path dynamic_processor_deallocation to turn it on

单项选择题Asystemadministratorisconsideringenablingthe64-bitkernelbutfirstmustdetermineifthesystemhardwarewillsupport64-bit.HowwouldthisbeaccomplishedinAIX5L？（）

A.prtconf -c
B.lscfg -v sys0
C.Check the /unix link
D.Check for JFS2 filesystems

单项选择题Sometimesperformanceismoreimportantthanavailability（e.g.，incaseswherethedatacanbeeasilyre-created）.Whichofthefollowingistheappropriatediskconfigurationforanapplicationthatrequiresfasterwritesoveravailability？（）

A.RAID-1
B.RAID-5
C.RAID-0+1
D.RAID-0