多项选择题
A. signal strength 5dBm
B. signal strength 6dBm
C. noise level 4dBm
D. noise level 5dBm
单项选择题 Which enterprise caching mode eliminates the need for Layer 4 switches or WCCP enabled routers to intercept user requests?（）
多项选择题 Which three Layer 2 access designs have all of their uplinks in an active state?（）
多项选择题 Which three objectives would be met by designing Layer 3 switching in the Campus Backbone of a medium size installation?（）