What is the primary function of link-state routing protocols?

Link-state routing protocols are designed primarily to maintain a comprehensive and updated map of the entire network topology. This ability to have a complete view of the network is what enables them to make informed and efficient routing decisions. When a router using a link-state protocol discovers changes in the network, such as a new link or a failed link, it promptly sends this information to all other routers in the network. This process allows all routers to have an identical view of the network, which aids in determining the best paths for data transmission.

This contrasts with distance-vector protocols, which only share information about the next hop and distance to various destinations, rather than giving a full picture of the complete network structure. Maintaining a full map not only contributes to more accurate routing but also helps in really responding to changes and optimizing performance.

The other options do not directly align with the core purpose of link-state protocols. Analyzing traffic patterns in real-time focuses on flow rather than topology. Compressing routing information for efficiency is more related to the overhead in the routing process but does not define the main function of link-state routing. Moreover, eliminating the need for neighboring routers does not capture the collaborative nature of these protocols, where routers rely on each other to share topology information. Thus