What does an area border router maintain?

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IT Exam Items Repository › Category: CCNP ENARSI v9 › What does an area border router maintain?

What does an area border router maintain?

two databases: one for the backbone and one for all other areas
a separate database for each area with which it is connected
a single database for all areas
a separate routing table for each area

Explanation: An Area Border Router (ABR) is connected to at least two areas (one being Area 0). Because OSPF requires all routers within a specific area to have identical Link-State Databases (LSDBs), the ABR must maintain a separate and synchronized database for every area it participates in.

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