Link-State Database JN0-364 Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   Which statement correctly describes the role of the link-state database in OSPF?

   • AIt is a database of all MAC addresses learned from the network
   • BIt is a list of all OSPF neighbors and their states
   • CIt is the central repository of topology information used by the SPF algorithm to compute routes
   • DIt is used to store the routing table entries that are advertised to neighboring routers
   Reveal Solution Discussion Select an answer first
2. 2expert · hard

   A service provider has an OSPF network with area 0 and a stub area. A Type 5 LSA is received by an Area Border Router (ABR) in area 0. What does the ABR do with this LSA when advertising routes into the stub area?

   • AIt does not flood the Type 5 LSA into the stub area; instead, it generates a default route (Type 3 LSA) for the stub area.
   • BIt drops the Type 5 LSA and does not advertise any route into the stub area.
   • CIt converts the Type 5 LSA into a Type 7 LSA before flooding it into the stub area.
   • DIt floods the Type 5 LSA into the stub area unchanged.
   Reveal Solution Discussion Select an answer first
4. 3application · medium

   Two OSPF routers are forming an adjacency. They have exchanged DBD packets and are now in the Loading state. What is happening during this state?

   • AThe routers are flooding all LSAs to each other without any request.
   • BThe routers are running the SPF algorithm to calculate routes.
   • CThe routers are negotiating the master/slave relationship.
   • DThe routers are sending Link-State Request (LSR) packets and receiving Link-State Update (LSU) packets for missing LSAs.
   Reveal Solution Discussion Select an answer first
5. 4expert · medium

   Two OSPF routers are forming an adjacency over a broadcast network. They have both elected a Designated Router (DR) and Backup Designated Router (BDR). What is the role of the DR in the LSDB synchronization process?

   • AThe DR maintains the LSDB for all routers and distributes it on demand.
   • BThe DR only handles hello packets and does not participate in LSA flooding.
   • CThe DR is responsible for running SPF and distributing routes to all routers.
   • DThe DR acts as the central point for LSA flooding and ensures all routers on the segment have a synchronized LSDB.
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   Which OSPF LSA type is responsible for describing the state of a router's interfaces and its links to neighboring routers?

   • AType 1 (Router LSA)
   • BType 5 (AS-external LSA)
   • CType 2 (Network LSA)
   • DType 3 (Summary LSA)
   Reveal Solution Discussion Select an answer first