单项选择题
A system contains multiple hot-swap stand-alone disks with a large number of JFS2 file systems. Which feature of JFS2 can be used to improve reliability， availability and serviceability （RAS） if a disk failure occurs？（）
A.Inline logging
B.Dynamic inode allocation
C.Linear directory organization
D.Online filesystem defragmentation
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Asystemadministratorhasafilesystemcalled/test/datainvolumegroupdatavg.Whichofthefollowingcommandswillallowtheadministratortocreateamirroredcopyofthefilesystem’sdata？（）
A.chfs
B.chlv
C.mklvcopy
D.mkfscopy -
单项选择题
Asystemadministratorcancreatelogicalvolumesandthenaddfilesystemstothem，orcreatethefilesystemdirectly.Whatisanadvantageofthetwo-stepapproachinsteadoftheone-stepapproach？（）
A.The number of bytes per inode can be specified.
B.Placement of the filesystem on the disk can be specified.
C.The jfslog can be specified on creation of the filesystem.
D.Either a JFS or JFS2 filesystem can be created on the logical volume. -
单项选择题
Whichcommandlistsoutthephysicalvolumenamesaswellastotal/freePPsinvolumegroupdatavg？（）
A.lsdev -Cl datavg
B.lsvpcfg datavg
C.lspv -p datavg
D.lsvg -p datavg
