多项选择题
A. VLANs logically divide a switch into multiple, independent switches at Layer 2.
B. Trunk links can carry traffic for multiple VLANs.
C. VLAN implementation significantly increases traffic due to added trunking information.
D. A VLAN can span multiple switches.
E. VLANs extend the collision domain to include multiple switches.
F. VLANs typically decrease the number of multiple switches.
单项选择题 You want your Catalyst switch to implement a switching method that holds a packet in its memory until the data portion of the respected packet reaches the switch.Which method should you employ on your Catalyst switch?（）
多项选择题 What are two characteristics of "store and forward" switching?（）
单项选择题 Catalyst switches utilize a special technology to identify and prevent topology loops and ensure that data flows properly through a single network path. What is the name of this technology?（）