多项选择题
A. FWSM routes traffic between the VLANs.
B. FWSM switches traffic between the VLANs.
C. Routed mode is often called bump-in-the-wire mode.
D. Routed mode firewall deployments are used most often in current designs.
多项选择题 Which three things can be restricted by the Class of Service in a traditional PBX?（）
单项选择题 Distribution layer: This layer includes LAN-based routers and layer 3 switches . When is a first-hop redundancy protocol needed in the distribution layer?（）
单项选择题 When dealing with transparent caching, where should the Content Engines be placed?（）
