Question 720
Two VLANs share the same physical uplinks but operations wants Switch A to be the spanning-tree root in VLAN 10 and Switch B to be root in VLAN 20. Which design implements that intent under Rapid PVST+?
Explanation
Correct Answer
Rapid PVST+ maintains a distinct spanning-tree instance per VLAN, permitting different designated roots to balance VLAN traffic across redundant Layer 2 uplinks.
Incorrect Answers
Equal priorities can leave MAC-address tie-breaking to choose roots, but hostname spelling does not meet the requested per-VLAN design.
Removing STP from a redundant Layer 2 topology can create a forwarding loop rather than a controlled per-VLAN root.
Rapid PVST+ supports separate root elections for different VLAN instances.