单项选择题
A.Request to change the severity to 1
B.Request to speak to the Duty Manager
C.Request to escalate the problem to development
D.Request IBM to close the incident and reopen the incident with another call.
单项选择题 AsystemadministratoridentifiedaproblemwithanAIXcommandandimplementedawork-around.AcallwasmadetoIBMSupporttoreporttheproblem.Whatseveritylevelshouldtheadministratorchoose？（）
单项选择题 Whichofthefollowingcommandswillclearallsoftwareentriesintheerrorlog？（）
单项选择题 AsystemadministratorhasjustfinishedupgradingasystemtoAIX5.2.Iftherearefutureproblems，thesystemadministratorwouldliketoaddanentrytotheAIXerrorlogtorecordthisevent.Whichofthefollowingcommandscanbeissuedforthispurpose？（）