You want to ensure that a single-area OSPF network will be loop free. In this scenario, what are two requirements that satisfy this requirement? (Choose two.)
A.
The DR/BDR ensures that each node within an area has the same information in their LSDBs.
B.
The Shortest Path First algorithm must prune looped paths.
C.
Nodes within an area must connect in a full mesh.
D.
All nodes within an area must have the same information in their LSDBs.
The statement about the DR/BDR (Designated Router/Backup Designated Router) ensuring that each node within an area has the same information in their LSDBs is incorrect. While DR/BDR election helps reduce OSPF control traffic by limiting LSDB synchronization to only the DR and BDR, it does not ensure that each node within an area has the same LSDB information. OSPF routers exchange LSAs (Link State Advertisements) to build and maintain their LSDBs, and all routers within the same area should eventually have identical LSDBs regardless of the DR/BDR election.
DR/BDR doesnt ensure information sharing within the domain
upvoted 4 times
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