Exam N10-009 topic 1 question 134 discussion

EIGRP uses autonomous system number, but it is mainly used for identification and redistribution purposes and not for core path selection like BGP.

C. BGP. According to CompTIA: "Autonomous system numbers (ASN) are allocated to ISPs by IANA via the various regional registries. BGP is a type of exterior gateway protocol (in fact, it replaced a protocol named EGP) for communications between routers in separate autonomous systems. When BGP is used within an AS, it is referred to as Interior BGP (IBGP), and when implemented between autonomous systems, it is referred to as Exterior BGP (EBGP)." Refeerance CompTIA Network + Study Guide.

I looked up other sources and I consistently found BGP to be the answer.

Yes, EIGRP (Enhanced Interior Gateway Routing Protocol) does use an autonomous system number (ASN) to identify the collection of routers that share routing information within a specific routing domain; according to :-Generative AI So Does BGP: Yes, BGP (Border Gateway Protocol) utilizes an Autonomous System Number (ASN) to identify each network So , what is the right answer???? Is there anybody who is willing to stick his/her neck out for this?

C. BGP BGP (Border Gateway Protocol) is the routing protocol that uses an Autonomous System Number (ASN). This is used to identify unique networks or groups of networks in different organizations and is critical for inter-domain routing between different ASes on the internet