单项选择题
Which of the following class addresses is reserved for multicast？（）
A. Class A
B. Class B
C. Class C
D. Class D
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WhichofthefollowingcommandswillNOTdeterminetheslotlocationofanEthernetadapterinasystem？（）
A.lsattr -El
B.lsdev -C
C.prtconf
D.lscfg -l -
单项选择题
Whichofthefollowingfilesshouldcontainthestatement"hosts=local，bind"？（）
A./etc/hosts
B./etc/irs.conf
C./etc/netsvc.conf
D./etc/resolv.conf -
单项选择题
Amachinemusthavethemostdirectaccesspossibletotwodifferentnetworks.However，itcannotactasarouterbetweenthenetworks.Whichofthefollowingarrangementsismostappropriatetofacilitatethemachine’saccessibility？（）
A.ipforwarding turned on and two adapters
B.One adapter， with a route to a default gateway
C.An adapter in each network， and ipforwarding off
D.An adapter in each network， with a route only to the default gateway
