QuestionQ47

Spanning Tree

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With reference to the exhibit, which statement is true?

  • A The local device is using a bridge priority of 4k.
  • B The root bridge is using a bridge priority of 4k.
  • C The root bridge has not been elected for this RSTP topology
  • D The local device is the root bridge for this RSTP topology.
Explanation

The Root ID identifies the elected root bridge and begins with priority 4096, which is 4k. The local Bridge ID begins with 32768; moreover, its root cost is 40 and it has a root port, confirming that it is a nonroot bridge. Juniper documents that Root ID is the elected root bridge’s bridge ID and that Bridge ID is the locally configured bridge ID.

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