单项选择题
A.traceroute
B.tracert
C.ifconfig
D.ipconfig
单项选择题 Which of the following defines access for a network?（）
多项选择题 Which of the following ports would have to be allowed through a firewall to allow SNMP traffic topass on its default port?（） (Select TWO).
单项选择题 Which of the following wiring standards would MOST likely be used to interconnect two devices without the use of a hub or switch?（）