[单选] 班级管理的基本环节是（）。

4100Q-4汽油机表示的含义？ Which two statements are true regarding EIGRP?（） Passiveroutes are in the process of being calculated by DUAL.。 EIGRP supports VLSM, route summarization, and routing update authentication.。 EIGRP exchanges full routing table information with neighboring routers with every update.。 If the feasible successor has a higher advertised distance than the successor route, it becomes the primary route.。 A query process is used to discover a replacement for a failed route if a feasible successor is not identified from the current routing information.。 试述常见的间日疟的主要临床特点 When troubleshooting the issue， you notice the election of a new root bridge with an unknown MAC address. Knowing that all access ports have the PortFast feature enabled， what would be the easiest way to resolve the issue without losing redundant links？（） Enable bpduguard globally.。 Enable rootguard.。 Enable loopguard.。 Enable spanning tree.。 Enable UDLD。 何为地震子波。 班级管理的基本环节是（）。