ICND2: Interconnecting Cisco Networking Devices Part 2 (legacy) — Question 27

Which statement about spanning-tree root-bridge election is true?

Answer options

• A. It is always performed automatically
• B. Each VLAN must have its own root bridge
• C. Each VLAN must use the same root bridge
• D. Each root bridge must reside on the same root switch A

Correct answer:

Explanation

The correct answer is A, as the root bridge election process occurs automatically based on bridge priority and MAC address. Option B is incorrect because while each VLAN can have its own root bridge, it is not a requirement. Option C is wrong since VLANs can have different root bridges. Option D is incorrect because root bridges can exist on different switches.