多项选择题
What are some of the advantages of using a router to segment the network?（）
A.Filtering can occur based on Layer 3 information. B.Broadcasts are eliminated. C.Routers generally cost less than switches. D.Broadcasts are not forwarded across the router. E.Adding a router to the network decreases latency.
单项选择题 OSI中，哪些不是表示层功能？（）
判断题 CSMA/CD网络中，所有主机都可独占网络带宽。
多项选择题 Which of the following are true regarding bridges and switches?（）
