单项选择题

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？（）

A.telinit -q
B.refresh -s inetd
C.startsrc -g services
D.refresh -s portmap

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单项选择题

On AIX systems， where DNS resolution takes precedence over NIS， a particular process needs to resolve names using /etc/hosts first. Which of the following processes is the best way to accomplish this without affecting the rest of the system’s name resolution？（）

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

Which command is used to turn ipforwarding on or off？（）

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

单项选择题

Users complain they cannot communicate with a server. The system administrator suspects there may be a problem with the Ethernet adapter or with the way it is configured. Which command can be run to verify the adapter is configured correctly？（）

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