An OSPF broadcast segment has four OSPF-speaking routers. One router is in the DR state, one is in the BDR state, and two are in DR other states. How many 2Way OSPF sessions does a router in the DR other state have?
On an edge router, you want to create a default route with a next hop to an external connection. The route should be available only when you are receiving routes from the external provider. Which type of route would you configure on your device to accomplish this objective?