A System p administrator needs to upgrade a system from AIX 5.2 to AIX 5.3. 
Which of the following installation methods would minimize downtime（）

单项选择题An administrator attempted to run a sar -u report and received the following error： sar： 0551-201 Cannot open  var adm sa sa12.  Which of the following should be scheduled in adm’s crontab to enable sar reporting（）

A.sar
B.sa1
C.vmo
D.iostat

单项选择题A banking user with the userid of ’joe’ is unable to rsh from SYSTEMA to SYSTEMB without having to retype their password， but they can rsh from SYSTEMB to SYSTEMA. No other users are experiencing the same issue.  Both systems have a  home joe .rhosts file that contain the proper references to the other host. The  home joe .rhosts files on both SYSTEMA and SYSTEMB are owned by userid ’joe’.  Which of the following is the most likely cause of this problem（）

A.User ’joe’ is specified in the /etc/nologin on SYSTEMb.
B.User ’joe’ is specified in the /etc/nologin on SYSTEMa.
C.The file permissions on the /home/joe/.rhosts file on SYSTEMA are incorrect.
D.The file permissions on the /home/joe/.rhosts file on SYSTEMB are incorrect.

单项选择题WhichofthefollowingcommandsmayindicatehardwareredundancyprotectionofaPV（）

A.lsattr
B.lspv
C.lsvg
D.lsresource

单项选择题Sometimes performance is more important than availability （e.g.， in cases where the data can be easily re-created）.  Which of the following is the appropriate disk configuration for an application that requires faster writes over availability（）

A.RAID 1
B.RAID 6
C.RAID 0 + 1
D.RAID 0

单项选择题A System p administrator noticed several error messages on the screen while the system was booting up； but was not able to write them down.  Where should the system administrator look for the console log， assuming it is in the default location（）

A./var/log/conslog
B./var/log/console.log
C./var/adm/ras/conslog
D./var/ras/console.log