单项选择题
A.All IP packets passing through the router
B.Only IP packets with the source address of 10.1.1.1
C.All IP packets from 10.1.1.1 to 172.16.1.1
D.All IP packets between 10.1.1.1 to 172.16.1.1
多项选择题 WhichtwoofthefollowingoptionsarecategoriesofNetworkMaintenancetasks？（）
问答题 You have 2 commands used for ftp： ip ftp username xxxxxx ip ftp password yyyyyy Which two commands will be used when switching from ftp to http？
单项选择题 Whichalertswillbeseenontheconsolewhenrunningthecommand：loggingconsolewarnings.（）
