A system administrator has added a new port entry in /etc/services for a new application to be tested. Which of the following commands should be used to activate this port？（）

单项选择题OnAIXsystems，whereDNSresolutiontakesprecedenceoverNIS，aparticularprocessneedstoresolvenamesusing etc hostsfirst.Whichofthefollowingprocessesisthebestwaytoaccomplishthiswithoutaffectingtherestofthesystem’snameresolution？（）

A.Set the NSORDER environmental variable of the environment which invokes the process to：NSORDER="local，nis，bind"
B.Set the NSORDER environmental variable of the environment which invokes the process to：  NSORDER="hosts=auth，nis，bind"
C.Edit /etc/netsvc.conf to add a line similar to the following： process /full/path/of/process {hosts=local，nis，dns}
D.Unset NSORDER environment variable of the environment which invokes the process

单项选择题Whichcommandisusedtoturnipforwardingonoroff？（）

A.ifconfig
B.no
C.chdev
D.netstat

单项选择题Userscomplaintheycannotcommunicatewithaserver.ThesystemadministratorsuspectstheremaybeaproblemwiththeEthernetadapterorwiththewayitisconfigured.Whichcommandcanberuntoverifytheadapterisconfiguredcorrectly？（）

A.netstat -in
B.ifconfig -a
C.arp -a
D.cfgmgr

单项选择题WhatisthecorrectfastpathtoconfigureoraddaTTYTerminal（directlyfromthescreen），whichconnectstoaserialport？（）

A.smitty tty
B.smitty devices
C.smitty pty
D.smitty dev

单项选择题ForSLIPtowork，whatshouldthe EnableLogin valuebesettoonbothsystems？（）

A.Enable
B.Disable
C.Share
D.Delay