单项选择题
Below is the routing table for host "earth"： If host "earth" tries to ping 128.78.1.5， to which of the following interfaces is the packet being sent？（）
A.en0 B.lo0 C.tr0 D.ping results in "Sendto：Network is unreachable" message
InaTCP/IPnetwork，whichofthefollowingcommandsutilizesthe...
单项选择题In a TCP/IP network， which of the following commands utilizes the ICMP protocol？（）
A.rcp B.tftp C.ping D.rpcinfo
Anadapterstatedoesnotshowavailableafterareboot.Whichoft...
单项选择题An adapter state does not show available after a reboot. Which of the following is the most probable cause？（）
A.DNS is not working properly B.Ping is not working properly C.The cables are disconnected D.The device driver did not load properly
Ahostistobepartofaverysmallprivatenetwork，whichwillneve...
单项选择题A host is to be part of a very small private network， which will never be connected to any other networks. Which of the following name resolution schemes would be the easiest to implement？（）
A.DNS B.NIS C.DHCP D.etc/hosts file
