A system has five 80GB disk drives and has a requirement to store 300GB of data. Which disk configuration will provide fault tolerance while still meeting data storage requirements？（）

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

单项选择题AsupportspecialiststartedtoapplyanAPARonasystembyinsertingthetapeintothetapedrive，andloadedthefixusingsmittyinstallp.Thefollowingerrormessageisdisplayed： tapenotinbackupformat Whichofthefollowingwillresolvethisproblem？（）

A.Change density setting to 2
B.Set tape device to /dev/rmt0
C.Set block size to 0 for variable
D.Enable compression on tape device