What do BGP routers exchange to indicate how to reach destination networks?

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Multiple Choice

What do BGP routers exchange to indicate how to reach destination networks?

Explanation:
BGP communicates how to reach networks by sending updates that carry reachability information along with path attributes. Each update lists the prefixes that can be reached (the NLRI) and a set of attributes that describe the route’s properties and policy decisions (such as AS_PATH, NEXT_HOP, LOCAL_PREF, etc.). These attributes guide route selection and propagation between peers. This approach is different from link-state advertisements used by OSPF/IS-IS, from hello-based neighbor discovery, or from internal IGP routing tables, which are not the mechanism BGP uses to advertise external reachability.

BGP communicates how to reach networks by sending updates that carry reachability information along with path attributes. Each update lists the prefixes that can be reached (the NLRI) and a set of attributes that describe the route’s properties and policy decisions (such as AS_PATH, NEXT_HOP, LOCAL_PREF, etc.). These attributes guide route selection and propagation between peers. This approach is different from link-state advertisements used by OSPF/IS-IS, from hello-based neighbor discovery, or from internal IGP routing tables, which are not the mechanism BGP uses to advertise external reachability.

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