After a networking intern plugged in a switch, a significant number of the users in a building lost connectivity. Which of the following is the most likely root cause?
If the newly connected switch has a higher VTP revision number and is set to server mode, it can overwrite the VLAN database of the entire domain.
This can delete VLANs or change assignments, causing devices to lose access to their networks, leading to widespread connectivity issues.
A Native VLAN mismatch can cause spanning tree loops or traffic being dropped, immediately breaking network connectivity — exactly like the symptoms you described (a large part of the building losing network access after a switch was added).
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