单项选择题
A.Packet is destined for a local interface to the router.
B.Packet was translated, but no response was received from the distant device.
C.Packet was not translated, because no additional ports are available.
D.Packet was translated and fast switched to the destination.
单项选择题 A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port（）。
单项选择题 Refer to the exhibit. The user at Workstation B reports that Server A cannot be reacheD.What ispreventing Workstation B from reaching Server A?（）
多项选择题 下面对我国广泛使用的DDN网络描述正确的是什么？（）
