单项选择题
Which of the following commands should be used to watch system errors as they are logged？（）
A. errpt -c B. tail -f /var/adm/ras/errlog C. syslogd -d D. /usr/lib/errdemon -s 8192
单项选择题 Whichfilesetincludesthecommandsvmstatandsar？（）
单项选择题 Howarehardwareerrorsremovedfromanerrorreportthataremorethan30daysold？（）
单项选择题 Whenasystemhasbothonlinetransactionprocessingaswellaslargebatchprocessing，whichofthefollowingcommonprocedureswillbesthelptoimprovesystemperformance？（）
