单项选择题
Which of the following is the MOST accurate description of a L2/L3 switch?（）
A. Performs switching and routing duties B. A router that directly connects to a switch C. A multi-purpose switch fabric used in full mesh environments D. A switch that directly connects to a router
单项选择题 A technician would use a physical network diagram to determine:（）
单项选择题 Which of the following uses PKI?（）
多项选择题 10GBase-T is backward compatible with which of the following? (Select TWO).（）
