A system administrator has edited the necessary files for setup of an AIX system to serve as a bootp server.  Which of the following commands is required to complete the activation？（）

单项选择题Whatistheproperwaytoensurethatupdatestothe etc aliasesfileareseenbysendmail？（）

A.Refresh the named daemon
B.Run the alias command
C.Refresh the snmpd daemon
D.Run the sendmail -bi command

单项选择题Whatistheproperwaytorefreshsendmail？（）

A.sendmail -bt
B.sendmail -ba
C.refresh -s sendmail
D.startsrc -s sendmail

单项选择题AclientcannotmountafilesystemfromanNFSserver.Whichofthefollowingoptionsisthemostprobablecauseforthemountfailure？（）

A.Server is not running  rpc.lockd
B.Client is not running the rpc.statd
C.Filesystem not exported by the server
D.Client nfsd daemons are all inoperative

单项选择题Onasystemwidebasis，whichofthefollowingproceduresisbesttomakeNISnameresolutiontakeprecedenceoverDNS？（）

A.Remove the /etc/resolv.conf file
B.Unset the NSORDER environment variable
C.Add the following line to /etc/netsvc.conf： hosts=nis，bind，local
D.In a NIS and DNS environment， NIS takes precedence so there is nothing to change

单项选择题WhichofthefollowingfilesshouldbeeditedtoenableSNMP？（）

A./etc/rc.nfs
B./etc/rc.tcpip
C./etc/rc.net
D./etc/inetd.conf