What is the purpose of dynamic routing protocols?
- Forward user traffic
- Advertise the MAC address that is tied to an IP address
- To learn MAC address of neighboring devices
- To learn destination networks, pick a best path, and maintain the information
The correct answer is 4.
The purpose of routing protocols is to advertise the existence of destination networks between routers. Each protocol has a method of picking the best path to each destination, based on some type of metric or metrics. Once the best path has somehow confirmed that it is still valid, each protocol has a maintenance process. The dynamic routing protocols for IPv4 and IPv6 are RIP, OSPF, EIGRP, ISIS, and BGP.
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