Designated Router and Backup Designated Router JN0-364 Practice Questions (Page 2)

Questions 6–10

1. 6foundation · easy

   In an OSPF broadcast network, which two criteria are used, in order, to elect the designated router (DR)?

   • AHighest router priority, then highest router ID
   • BHighest router ID, then lowest router priority
   • CLowest router priority, then highest router ID
   • DHighest router ID, then highest router priority
   Reveal Solution Discussion Select an answer first
2. 7expert · hard

   In an OSPF broadcast network, the DR fails, and the BDR is promoted to DR. A new BDR is elected. During this process, what happens to the adjacencies of the DROTHERs?

   • AAll adjacencies are torn down and re-established.
   • BDROTHERs do not need to form any new adjacencies.
   • CDROTHERs form full adjacencies with each other temporarily.
   • DDROTHERs maintain their adjacencies with the new DR and form new adjacencies with the new BDR.
   Reveal Solution Discussion Select an answer first
4. 8foundation · easy

   What is the effect of setting an OSPF router's priority to 0 on a broadcast network?

   • AThe router becomes the BDR if its router ID is the second highest on the network.
   • BThe router is excluded from the DR/BDR election and will never become DR or BDR.
   • CThe router becomes the DR if its router ID is the highest on the network.
   • DThe router is not allowed to participate in OSPF on that network.
   Reveal Solution Discussion Select an answer first
5. 9expert · hard

   An OSPF broadcast segment has a DR with priority 255 and a BDR with priority 200. A new router R5 is added with priority 255 and a higher router ID than the current DR. What happens to the DR/BDR roles?

   • AThe current DR and BDR are re-elected, and R5 becomes the new DR.
   • BR5 becomes the new DR, and the current DR becomes the BDR.
   • CThe current DR remains DR, and R5 becomes the BDR if it has a higher priority than the current BDR.
   • DThe current BDR becomes the DR, and R5 becomes the BDR.
   Reveal Solution Discussion Select an answer first
6. 10foundation · easy

   On which OSPF network type is a designated router (DR) elected?

   • APoint-to-point
   • BLoopback
   • CPoint-to-multipoint
   • DBroadcast
   Reveal Solution Discussion Select an answer first