A campus network utilizes EIGRP to connect to several remote branch offices. Which configuration should be established on all branch routers to improve routing scalability and performance?

Authentication improves security by validating EIGRP neighbors but has no effect on routing scalability, query propagation, or convergence performance.

Enabling EIGRP stub routing on branch routers tells the hub router not to send EIGRP queries to stub routers during route lookups, dramatically reducing query scope and improving convergence time. It also prevents branch routers from being used as transit paths for traffic not destined for their local networks, which improves overall routing efficiency in large campus-to-branch deployments.

Adjusting EIGRP k-values changes the metric calculation formula, but all routers in the EIGRP domain must use identical k-values or adjacencies will not form, making this a risky and impractical tuning method.

Offset lists adjust the metric of specific routes to influence path selection for individual prefixes but do not address query scope or overall routing scalability in a branch design.