单项选择题
Which of the following commands should be used to make permanent static route entries that will persist across reboots？（）
A.chroot
B.route static
C.route add
D.smitty route
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Whichofthefollowingparameterscanpreventpacketfragmentationonrouterswhenconnectingtoremotenetworks？（）
A.mtu
B.sb-max
C.rfc1323
D.tcp_mssdflt -
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InaTCP/IPnetwork，whichofthefollowingprotocolsisinvolvedwhenauserissuesapingcommand？（）
A.TCP
B.UDP
C.ICMP
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单项选择题
AllofthefollowingcommandswillsetthehostnameintheODMdatabaseEXCEPT：（）。
A.chdev
B.odmadd
C.hostname
D.smitty hostname
