Selected Answer: B The question is about network re-convergence with PBR - not problems tied to PBR

I choose B Policy-based routing (PBR) can be used to implement many routing policies, but it can also introduce problems with network reconvergence. One such problem is the chance of creating microloops. A microloop is a loop that forms between two or more devices in a network. Microloops can cause traffic to circulate between the devices indefinitely, which can lead to performance problems and even network outages. Microloops can be created during reconvergence if PBR is not configured properly. For example, if a PBR rule is set to route traffic over a link that is down, the traffic may be looped back to the source device.

Selected Answer: B Given the context of the question about reconvergence and PBR, the main concern is: B. It can create microloops during reconvergence.

Selected Answer: A For me, the problem with PBR is more the limited scalability. With a proper PBR configuration, there are no loops.

Answer is D: Increased Convergence Time: Policy-based routing can make the routing process more complex because it lets routing decisions be based on policies other than the standard routing table. During network reconvergence, the network must not only reestablish the best paths according to traditional routing protocols but also reapply the policies that govern PBR. This extra step can slow the overall convergence process, leading to increased convergence time.

Please disregard my earlier answer of D - it should be B: