Which of the following commands should be used to verify the integrity of a device driver fileset？（）

A.A routing table has changed
B.The IP address has changed
C.The system has become a gateway
D.A hacker is posing a threat to the system

A.1 or 3
B.2 or more of differing models
C.2 or 4 of the same model
D.2 or more of the same model

A.Run the command ’no -d’ to set network options to default
B.Edit /etc/rc.tcpip and enable gated
C.Edit /etc/rc.tcpip and enable routed
D.Edit /etc/rc.net and enable ipforwarding