单项选择题
A.The originator of the TCN immediately floods this information through the network.
B.The TCN propagation is a two step process.
C.A TCN is generated and sent to the root bridge.
D.The root bridge must flood this information throughout the network.
单项选择题 Refer to the exhibit. Catalyst R is the root bridge for both VLAN 1 and VLAN 2.What is the easiest way to load-share traffic across both trunks and maintain redundancy in case a link fails，without using any type of EtherChannel link-bundling？（）
单项选择题 Whichstatementistrueaboutloopguard？（）
单项选择题 WhywouldaroguehostthatisrunningaDHCPserveronacampusLANnetworkpresentasecurityrisk？（）