单项选择题
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
单项选择题 Inordertoincreasereliability，minimizecollisionsandestablishalargenumberofsystemsonanEthernetsegment，whichofthefollowingoptionsshouldbeselectedfortheEthernetnetwork？（）
单项选择题 Whichofthefollowingclassnetworkscontains65，534hosts？（）
单项选择题 Givenanewimplementation，whichofthefollowingproceduresshouldbeusedtodetermineadefaultgateway’sIPaddress？（）