Juniper
JN0-660 · Question #450
Which three statements are true regarding the IS-IS link-state database (LSDB)? (Choose three.)
The correct answer is A. An L1 router has a single database reflecting the connectivity of its area. B. An L1 router often relies on a default route generated by attached routers to reach interarea destinations. E. An attached router has at least two LSDBs: one for each Level 1 area and a single LSDB for the Level 2. See the full explanation below for the reasoning.
Question
Which three statements are true regarding the IS-IS link-state database (LSDB)? (Choose three.)
Options
- AAn L1 router has a single database reflecting the connectivity of its area.
- BAn L1 router often relies on a default route generated by attached routers to reach interarea destinations.
- CThe Level 2 database contains only backbone area routes unless route leaking is configured.
- DRoute leaking can be used to optimize Level 2 to Level 1 routing.
- EAn attached router has at least two LSDBs: one for each Level 1 area and a single LSDB for the Level 2
How the community answered
(45 responses)- A84% (38)
- C11% (5)
- D4% (2)
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