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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单项选择题

A system administrator has a filesystem called /test/data in volume group datavg. Which of the following commands will allow the administrator to create a mirrored copy of the filesystem’s data？（）

A.chfs
B.chlv
C.mklvcopy
D.mkfscopy

单项选择题

A system administrator can create logical volumes and then add file systems to them， or create the file system directly. What is an advantage of the two-step approach instead of the one-step approach？（）

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

Which command lists out the physical volume names as well as total/free PPs in volume group datavg？（）

A.lsdev -Cl datavg
B.lsvpcfg datavg
C.lspv -p datavg
D.lsvg -p datavg