多项选择题
A. Global addresses start with 2000::/3.
B. Link-local addresses start with FE00:/12.
C. Link-local addresses start with FF00::/10.
D. There is only one loopback address and it is ::1.
E. If a global address is assigned to an interface, then that is the only allowable address for the interface.
多项选择题 Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies?（）
多项选择题 A single 802.11g access point has been configured and installed in the center of a square office. A few wireless users are experiencing slow performance and drops while most users are operating at peak efficiency. What are three likely causes of this problem?（）
多项选择题 What are two security appliances that can be installed in a network?（）