Which two statements describe the MST internal spanning tree instance? (Choose two)
- It carries all VLANs traffic.
- It carries identical setup information among interconnected MST regions.
- It is always instance 0.
- It runs on all switch port interfaces of switches that are designated as root bridges.
- It runs on all switch port interfaces of switches in the MST region.
Explanation: MST uses a special STP instance called the internal spanning tree (IST), which is always the first instance, instance 0. The IST runs on all switch port interfaces for switches in the MST region, regardless of the VLANs associated with the ports.
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