On which of the following networks will OSPF elect a designated router (DR)? (Choose two.)

A.
Broadcast

B.
NBMA

C.
Point-to-point

D.
Point-to-multipoint

Explanation:
OSPF will perform an election for a designated router (DR) and backup designated router (BDR) on every multiaccess network segment. Multi-access segments are defined as segments where more than two hosts can
reach each other directly, such as a shared Ethernet segment (broadcast multi-access) or Frame Relay (nonbroadcast multi-access, or NBMA).
DR and BDR elections do not occur on point-to-point or point-to-multipoint segments. Point-to-point and pointto-multipoint segments are not considered multi-access segments. OSPF routers on these network types will
establish an adjacency without a DR/BDR election.
Objective:
Routing Fundamentals
Sub-Objective:
Configure, verify, and troubleshoot single area and multi-area OSPFv2 for IPv4 (excluding authentication,
filtering, manual summarization, redistribution, stub, virtual-link, and LSAs)

Cisco > Support > IP > IP Routing > Technology Information > Technology White Paper > OSPF Design Guide
> Document ID: 7039 > DR Election