多项选择题
Which two of these statements regarding RSTP are correct?（）
A. RSTP cannot operate with PVST+. B. RSTP defines new port roles. C. RSTP defines no new port states. D. RSTP is a proprietary implementation of IEEE 802.1D STP. E. RSTP is compatible with the original IEEE 802.1D STP.
多项选择题 What are three basic parameters to configure on a wireless access point?（）
多项选择题 Which two of these statements are true of IPv6 address representation?（）
多项选择题 Which two statements describe characteristics of IPv6 unicast addressing?（）
