多项选择题
Which two statements about the use of VLANs to segment a network are true?（）
A. VLANs increase the size of collision domains. B. VLANs allow logical grouping of users by function. C. VLANs simplify switch administration. D. VLANs enhance network security.
多项选择题 Which two protocols are used by bridges and/or switches to prevent loops in a layer 2 network?（）
多项选择题 Which two link protocols are used to carry multiple VLANs over a single link?（）
多项选择题 Which two benefits are provided by creating VLANs?（）
