A router learns 10.10.10.0/24 from both OSPF and EIGRP internal. Which route will be installed in the RIB?

The router will install the EIGRP internal route because it has a lower administrative distance (AD) of 90 compared to OSPF's AD of 110. Administrative distance is the first criterion routers use to determine the trustworthiness of a routing source when multiple routing protocols advertise the same destination. A lower AD indicates a more preferred route. Equal-cost load balancing is not performed in this scenario because the routes are learned via different protocols and thus have different administrative distances, meaning only one will be installed. The metric is only considered if the administrative distances are equal.