Select two true statements about exterior routing protocols:
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Correct answer: They determine optimal paths between autonomous systems, BGP is the current standard exterior routing protocol.
Why this is the answer
Exterior Gateway Protocols (EGPs) are designed to route traffic between different autonomous systems (AS). An AS is a collection of IP networks and routers under the control of one entity. Interior Gateway Protocols (IGPs), like OSPF and EIGRP, handle routing within an AS. Border Gateway Protocol (BGP) is the only EGP currently in widespread use and is the de facto standard for routing on the internet. While EGP is the class of protocols, BGP is the specific protocol that fulfills this role today. Most modern networking does not support EGP as a separate, distinct protocol alongside BGP; BGP is the EGP. EIGRP is an IGP, not an EGP, and is used for internal routing.
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