[多选] Which two are effects of connecting a network segment that is running 802.1D to a network segment that is running 802.1w？（）

A . the entire network switches to 802.1D and generates BPDUs to determine root bridfe status.
B . A migration delay of three seconds occurs when the port that is connected to the 802.1D bridge comes up
C . The entire network reconverges and a unique root briddge for the 802.1D segment， and a root bridge for the 802.1W segment， is chosen
D . the first hop 802.1w switch that is connected to the 802.1D runs entirely in 802.1DCompatibility mode and converts the BPDUs to either 802.1D or 802.1W segments of the network
E . Classic 802.1D timers， Such as forward Delay and Max-age， will only be used as a backup， and will not be necessary if point-to-point links and edge prots are properly identified and set by the administrator.

礁在地震剖面上的特点。消沉、松懈、颓丧、灰心属于（）情感。肯定性。否定性。积极性。消极性。 Which of the following statements are true regarding bridges and switches?（） Switches are primarily software based while bridges are hardware based.。 Both bridges and switches forward Layer 2 broadcasts.。 Bridges are frequently faster than switches.。 Switches have a higher number of ports than most bridges.。 Bridges define broadcast domains while switches define collision domains.。 Both bridges and switches make forwarding decisions based on Layer 2 addresses.。班级管理问题是一种复杂的创造性劳动，单纯依靠班主任和任课教师的积极性是远远不够的，还必须注意充分调动和发挥学生参与管理的积极性。这就要求在班级管理中必须遵循（）原则。方向性。超前管理。民主管理。全面管理。《生产指令管理规程》规定（）生产部调度科根据生产处月计划，制定周生产调度计划，下达品种生产计划（含区域指令）至分厂。生产指令经部门或分厂负责人批准后生效。生产指令一经生效，任何人不得任意变更或修改。生产指令可电话通知或口头通知。 Which two are effects of connecting a network segment that is running 802.1D to a network segment that is running 802.1w？（）

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[多选] Which two are effects of connecting a network segment that is running 802.1D to a network segment that is running 802.1w？（）

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