Following a system boot，the display indicates that previously detected hardware is missing. 
Which of the following commands would identify the missing hardware？（）

单项选择题An administrator has a two-disk volume group （testvg） with one logical volume （testlv） which has just been mirrored across both disk drives. Which of the following commands can be used to turn off quorum？（）

A.chvg -Qn testvg
B.chlv -Qn testvg
C.varyoffvg testvg； varyonvg -Qn testvg
D.varyoffvg testvg； exportvg testvg； importvg -Qn testvg； varyonvg testvg

单项选择题An administrator has received complaints from users that an application is not available while other applications run. This application resides on an NFS mounted filesystem. Which of the following commands should be run as a reasonable first step to handle this problem？（）

A.df
B.showmount
C.exportfs
D.refresh -g nfs

单项选择题WhichactionchangesthedefaulteditorforALLusersonthesystemfromvitoedit？（）

A.Issue the command：export EDITOR=/usr/bin/edit edit each users .profile to change the EDITOR value to /usr/bin/edit
B.Modify /.profile and change the EDITOR variable to /usr/bin/edit
C.Modify /etc/environment and add EDITOR=/usr/bin/edit export EDITOR
D.Modify /etc/security/defaults and change the EDITOR value to /usr/bin/edit

单项选择题An administrator is investigating why a non-prompted NIM rte install is failing after the successful netboot of the spot. A matching spot and lpp_source are correctly allocated to the NIM client in addition to a bosinst_data.  What is the most likely cause of the install failure？（）

A.The bosinst_data has an incorrect console defined.
B.The bosinst_data is incompatible with the level of spot.
C.The bosinst_data has an incorrect disk location defined.
D.The bosinst_data has an incorrect language option defined.

单项选择题DuringaNIMinstall，thesystemstopswiththeLEDcode611.Whatisthecauseoftheissue？（）

A.A failure to NFS mount filesystems from the NIM client
B.A failure to NFS mount filesystems from the NIM master
C.A failure to retrieve the tftp client info from the NIM master
D.A failure to retrieve the tftp server info from the NIM master