In the context of a P2MP network, which statement is true?

In a Point-to-Multipoint (P2MP) network, the statement that "DR and BDR are elected in a P2MP network" is considered true. In a P2MP network, particularly in the context of OSPF (Open Shortest Path First), the Designated Router (DR) and Backup Designated Router (BDR) are critical components. Their election is necessary to manage the sharing of routing information efficiently among all the connected points in the network.

The DR functions to minimize the amount of routing information that needs to be sent through the network by gathering updates from all routers and redistributing that information to others. This process significantly reduces the potential for routing loops and minimizes the amount of duplicate data transmitted across the network, which is particularly important in a broadcast environment characteristic of P2MP setups.

In contrast, the other statements do not accurately describe the characteristics of a P2MP network within the context of OSPF. While different mask lengths can complicate neighbor relationships, they do not fundamentally hinder them. OSPF does not default to a P2MP network type; it typically uses broadcast or point-to-point types depending on the topology. Lastly, while Link State Advertisements (LSAs) can