单项选择题
Which of the following "no options" controls the maximum value of mbufs？（）
A.mtu
B.sb_max
C.thewall
D.tcp_sendspace
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Whichofthefollowingcommandsidentifiesallnetworkadaptertypesthatareinstalledinamachine？（）
A.lsdev
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C.ifconfig
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单项选择题
WhichofthefollowingcommandsshouldbeusedtoaltertheroutingtableonarunningsystemwithoutaffectingtheODMsettings？（）
A.inetd
B.route
C.cfgmgr
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单项选择题
Whichofthefollowingcommandsisusedtochangedevicedriversettingsforanetworkadapter？（）
A.no
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