A system administrator received the following message while trying to ssh to a server：  connection timed out.The administrator pinged the server and had no response. The administrator then pinged the gateway， and was successful. Which tool could the administrator use next to isolate the problem？（）

单项选择题AusercallstoreporttheyaregettingI Oerrorsonafilesystem.Whichofthefollowingtoolsshouldbeusedtoisolatethisproblem？（）

A.df
B.diagrpt
C.errmsg
D.errpt

单项选择题Aremoteuseristryingtotelnettotheproductionserver.Thesessionisgettingatimeouterror.Whichcommandshouldtheuserissuetoverifythenetworkconnection？（）

A.iptrace
B.nslookup
C.netstat
D.traceroute

单项选择题WhichofthefollowingistheIBM-recommendedmethodtostarttheResourceManagementandControl（RMC）Services？（）

A.rmcctrl -s
B./etc/rc.rmc
C.startsrc -s rmc
D./etc/tunables/nextboot

单项选择题Asystemadministratorisintheprocessofdocumentingthesystem.Whichofthefollowingcommandswillprovidealistofthedevicesdefinedonthesystem？（）

A.lsdev -C
B.lslpp -C
C.lsattr -C
D.odmget -C

单项选择题Asystemadministratorhasbeenaskedtodocumentthehardwareconfigurationofasystem.Whichcommandcanbeusedtoassistinthistask？（）

A.lscfg
B.mkdev
C.lslpp
D.cfgmgr