Which two statements descibe the MST internal spanning tree instance? (Choose two)
- It runs on all switch port interfaces of switches that are designated as root bridges.
- It is always instance 0.
- It carries identical setup information among interconnected MST regions.
- It runs on all switch port interfaces of the switches in the MST region.
- It carries all VLANs traffic.
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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