What two routing protocols use a hierarchal network topology?

The two routing protocols that use a hierarchical network topology are Open Shortest Path First (OSPF) and Enhanced Interior Gateway Routing Protocol (EIGRP). OSPF organizes networks into areas to optimize routing efficiency and scalability, while EIGRP uses a hierarchical approach by grouping networks into subnets for better management and quicker convergence. These protocols help reduce routing overhead and enhance overall performance in large networks.