A production system needs to be upgraded from AIX V5.2 to AIX V5.3. All system logs and users need to be saved. 
Which installation method will accomplish the upgrade（）

单项选择题What is the most likely problem with this script （） VAR=1   （（VAR=$VAR+1））    while [ $VAR -It 10 ]    do   echo $VAR  done

A.#!/bin/ksh line is missing
B.Variable name VAR is not properly initialized
C.Loop variable is not incremented inside the loop
D.Replace brackets with braces

单项选择题Whichofthefollowingcommandswillncreasethecontiguousfreespaceofafilesystemwithouthavingtoaddadditionalpartitions（）

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

单项选择题Given the following scripts， what output would be generated（） usr local bin scriptl    #! usr bin ksh    VARl=red    export VARl=green    VARl=blue    usr local bin script2    ARl=yellow   usr local bin script2     #! bin ksh   echo  The sky is ${VAR1}.

A.The sky is red.
B.The sky is blue.
C.The sky is green.
D.The sky is yellow.

单项选择题A user is complaining that they ran out of paging space.  Which of the following will address this and  provide best performance（）

A.Expand the default paging space to the largest possible size
B.Create a new larger paging space
C.Create additional paging spaces of equal size on different disks
D.Reboot system

单项选择题Whichofthefollowingdiskprotectionmethodswouldbeusedtoprovidethemaximumamountofdataavailability（）

A.RAID 0
B.RAID 1
C.RAID 3
D.RAID 5