In a network running Rapid PVST+, all switches are using default configurations. A new switch, Switch-D, is added to the network. Switch-D has the lowest MAC address among all switches. What role will Switch-D assume in the Spanning Tree topology?
It will block all its ports due to BPDU filtering.
It will become the root bridge.
It will cause a network loop due to default configurations.
In Spanning Tree Protocol (STP), the root bridge is determined by the lowest bridge ID, which consists of the bridge priority and MAC address. Since all switches are using default bridge priority values (32768), the switch with the lowest MAC address becomes the root bridge. In Rapid Per VLAN Spanning Tree Plus (Rapid PVST+), this election process occurs per VLAN. Therefore, Switch-D will become the root bridge for all VLANs because it has the lowest MAC address among the switches. The incorrect options are not valid because default configurations prevent loops and do not block ports due to BPDU filtering unless explicitly configured otherwise.
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Cisco CCNA 200-301
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