问答题

简答题简述组播的sparse和dense的区别。

【参考答案】

dense mode ：
implicit joins，use flo......

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LoopguardandUniDirectionalLinkDetectionbothprotectagain...

多项选择题Loop guard and UniDirectional Link Detection both protect against Layer 2 STP loops. In which two ways does loop guard differ from UDLD in loop detection and prevention？（）

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B.UDLD protects against STP failures caused by cabling problems that create one-way links.
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D.UDLD protects against unidirectional cabling problems on copper and fiber media.
E.Loop guard protects against STP failures caused by problems that result in the loss of BPDUs from a designated switch port.

what’s IOS command ， you can see the output as below

问答题

what’s IOS command ， you can see the output as below

CCIE系列认证综合练习

简答题 简述组播的sparse和dense的区别。

简答题简述组播的sparse和dense的区别。