3.4 Configure and Verify Single Area OSPFv2 200-301 Practice Questions (Page 4)

Questions 16–20

1. 16application · medium

   An engineer is troubleshooting an OSPFv2 adjacency between two routers on an Ethernet segment. The neighbor state is stuck in 2-WAY. What does this state indicate, and what should the engineer do next?

   • AThe routers have completed database exchange and are ready to install routes.
   • BThe routers have a duplicate router ID.
   • CThe routers have exchanged hello packets but are not forming a full adjacency because they are both DROTHERs.
   • DThe routers have a mismatch in hello/dead timers.
   Reveal Solution Discussion Select an answer first
2. 17expert · hard

   A network engineer is troubleshooting an OSPFv2 adjacency between two routers. The output of `show ip ospf neighbor` shows the neighbor in the Init state. What is the most likely cause?

   • AThe routers are waiting for the DR/BDR election to complete.
   • BThe routers have mismatched Hello timers.
   • CRouter A is receiving Hello packets from Router B, but Router B is not receiving Hello packets from Router A.
   • DThe routers have mismatched area IDs.
   Reveal Solution Discussion Select an answer first
4. 18foundation · easy

   Two OSPFv2 routers are connected via a serial link with IP addresses 10.0.0.1/30 and 10.0.0.2/24. What is the most likely effect on OSPF adjacency?

   • AThey will not form an adjacency because the subnet masks do not match.
   • BThey will form a 2-Way adjacency but not Full.
   • CThey will form a Full adjacency because OSPF does not check subnet masks.
   • DThey will form a Full adjacency but with a warning message.
   Reveal Solution Discussion Select an answer first
5. 19application · medium

   A network engineer is configuring OSPFv2 on two routers connected via Ethernet. The engineer sets the Hello interval to 5 seconds on Router A and leaves the default on Router B. What is the effect of this configuration on the OSPF adjacency?

   • AThe adjacency will form, but the Dead interval will be 20 seconds on both routers.
   • BThe adjacency will not form because the Hello intervals do not match.
   • CThe adjacency will form, but Router B will not send Hello packets because the interval is different.
   • DThe adjacency will form because the Dead interval is the only timer that must match.
   Reveal Solution Discussion Select an answer first
6. 20foundation · easy

   In OSPFv2, which neighbor state indicates that a router has received a Hello packet from a neighbor but has not yet seen its own Router ID in the neighbor's Hello packet?

   • AExStart
   • BInit
   • C2-Way
   • DDown
   Reveal Solution Discussion Select an answer first