Which of the following commands can be used to identify all PCI hot plug slots on a server and their characteristics？（）

单项选择题Asystemdumphasoccured.TheLEDdisplayshows0c0.Whatdoesthisindicate？（）

A.The dump was successful.
B.A system dump is in progress.
C.No system dump device configured.
D.There was an I/O error during the dump.

单项选择题Asystemadministratorneedstoconfiguredumpdevicesforthesystem.Whichcommandwouldbeusedtoestimatethesizerequiredforadumpdevice？（）

A.lsdev
B.chdev
C.sysdumpdev
D.sysdumpstart

单项选择题AsystemadministratoriscurrentlyworkingonaproblemwithIBMSupport.Theadministratorfeelsthattheirexpectationsarenotbeingmetonthisproblem.WhatistheIBMrecommendedproceduretoensurethattherequestishandledappropriately？（）

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？（）

A.Crit-Sit
B.Severity 1
C.Severity 2
D.Severity 3

单项选择题Whichofthefollowingcommandswillclearallsoftwareentriesintheerrorlog？（）

A.errpt -d S
B.errclean 0
C.errclear -d S 0
D.errclean -d S 0