Which protocol measures its metric as Cisco's cost based cumulative bandwidth from source to destination?

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Multiple Choice

Which protocol measures its metric as Cisco's cost based cumulative bandwidth from source to destination?

Explanation:
In this question, the key idea is how a routing protocol assigns a cost metric based on link bandwidth and then sums that cost along the path to choose the best route. OSPF uses a per-interface cost that reflects its bandwidth—higher bandwidth yields a lower cost. The route cost is the accumulation of these per-link costs from source to destination, so the path with the lowest total cost is selected. This behavior aligns with the description of a Cisco-style cost based on cumulative bandwidth across the path. RIP uses hop count, which ignores bandwidth; BGP relies on path attributes and policies; EIGRP uses a more complex composite metric, not just a simple bandwidth-based cost summed along the path.

In this question, the key idea is how a routing protocol assigns a cost metric based on link bandwidth and then sums that cost along the path to choose the best route. OSPF uses a per-interface cost that reflects its bandwidth—higher bandwidth yields a lower cost. The route cost is the accumulation of these per-link costs from source to destination, so the path with the lowest total cost is selected. This behavior aligns with the description of a Cisco-style cost based on cumulative bandwidth across the path. RIP uses hop count, which ignores bandwidth; BGP relies on path attributes and policies; EIGRP uses a more complex composite metric, not just a simple bandwidth-based cost summed along the path.

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