CCNA: Cisco Certified Network Associate — Question 258

When using Rapid PVST+, which command guarantees the switch is always the root bridge for VLAN 200?

Answer options

• A. spanning-tree vlan 200 priority 614440
• B. spanning-tree vlan 200 priority 0
• C. spanning-tree vlan 200 root primary
• D. spanning-tree vlan 200 priority 38813258

Correct answer: B

Explanation

The correct command is 'spanning-tree vlan 200 priority 0', as a lower priority value guarantees that the switch will be elected as the root bridge. The other options either set a higher priority or use a command that does not specifically assign the lowest possible priority, making them ineffective for ensuring root bridge status.