Cisco Certified Network Professional Practice Test 2025 – Your All-in-One Guide to Exam Success!

The correct choice indicates that the interface type is not a factor in selecting a downstream root port in a spanning tree protocol scenario. The primary factors that are taken into account when determining which port will serve as the root port include port cost and port priority.

Port cost is based on the speed of the interface; faster links will have a lower cost, making them more likely to be chosen as the root port. Port priority affects how bridges use their IDs to break ties when multiple paths to the root exist; a higher priority value can lead to a port being selected as the root port over others with lower priority values.

While having two neighbors might seem relevant, it does not directly impact the selection process of the downstream root port itself. Instead, it may pertain to redundancy and the overall topology of the network. Thus, the interface type—reflecting characteristics such as whether the interface is Ethernet, Fast Ethernet, etc.—does not influence the decision of which port should be designated as the downstream root port.