- A. The MAC address of the root bridge is 0017.596d.1580.
- B. The Fa0/11 role confirms that SwitchB is the root bridge for VLAN 40.
- C. SwitchB is not the root bridge, because not all of the interface roles are designated.
- D. VLAN 40 is running the Per VLAN Spanning Tree Protocol.
Answer: Option C.
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