A system administrator is attempting to unmount filesystem /dev/data and receives the following message：  
umount： 0506-349 Cannot unmount /dev/data： The requested resource is busy.  
Which of the following commands can be used to determine which process has open references within the filesystem？（）

单项选择题Whichcommandwillincreasethecontiguousfreespaceofafilesystemwithouthavingtoaddadditionalpartitions？（）

A.chfs
B.fsck
C.chlv
D.defragfs

单项选择题Asystemadministratorhasincreasedthesizethelogicalvolumelv00.Theadministratornowwantstoenlargethefilesystem fs00thatismountedonlv00tothesamesizethatlv00currentlyis.Whichofthefollowingcommandswillshowtheadministratorthenumberofblockstousewhenincreasingthesizeofthefilesystem fs00？（）

A.lslv /fs00
B.lsfs -q /fs00
C.lsdev -Cc lv00
D.lsattr -El lv00

单项选择题The system administrator wants to use a new jfslog  dev fs1log with the filesystem  test fs1 on the testvg volume group. The following commands were used to create the log and assign it to the filesystem：  （1）mklv -t jfslog -y  dev fs1log testvg 1   （2）chfs -a log= dev fs1log  test fs1   While trying to mount the  test fs1 filesystem the administrator received the error：  Cannot mount  dev fs1lv on  test fs1： A system call received a parameter that is not valid . What step did the administrator miss that most likely caused the error？（）

A.Use the logform command to format /dev/fs1log as a jfslog
B.Use the chlv command to change the lv type of /dev/fs1log to jfslog
C.Use the chvg command to change the default jfslog of testvg to /dev/fs1log
D.Edit the /etc/filesystems file to change the log associated with /test/fs1 to /dev/fs1log

单项选择题Whileusingthesmitinstall_removemenustoremovesomefilesetsthesystemadministratornoticesthe usrfilesystemisnowunnecessarilylarge.Whichofthefollowingactionswillreducethesizeofthe usrfilesystem？（）

A.Backup， unmount， remove， recreate and restore the filesystem.
B.Boot from mksysb tape and select Shrink filesystems on restore.
C.Unmount， run defragfs /usr and the reducefs -size XXX /usr commands.
D.Update /etc/filesystems with the desired size for /usr and reboot the system.

单项选择题Asystemadministratorhasdeterminedthatthe developmentfilesystemneedstobechangedfromJFStoJFS2totakeadvantageofthenewcapabilitesavailableinJFS2.Whatisthemethodtoconvertthe developmentfilesystemfromtypeJFStoJFS2？（）

A.Umount the /development filesystem and remount it using the following command： mount -t jfs2 /development
B.Edit the /etc/filesystems file to change the type paramter to "jfs2" and change the log parameter to "jfs2log"
C.Backup the /development filesystem data， delete the JFS /development filesystem， create the new JFS2 /development filsystem， and restore the data to the /development filesystem
D.Backup the /development filesystem data， change the /development filesystem using the following command，chfs -t type=jfs2 /development.then， restore the data to the /development filesystem