Refer to the exhibit. What three conclusions can be drawn from the displayed output? (Choose three.)

IT Exam Items RepositoryCategory: CCNA 3 v7Refer to the exhibit. What three conclusions can be drawn from the displayed output? (Choose three.)

Refer to the exhibit. What three conclusions can be drawn from the displayed output? (Choose three.)

  • The DR can be reached through the GigabitEthernet 0/0 interface.
  • There have been 9 seconds since the last hello packet sent.
  • This interface is using the default priority.
  • The router ID values were not the criteria used to select the DR and the BDR.
  • The router ID on the DR router is 3.3.3.3
  • The BDR has three neighbors.

Explanation: The displayed output from the show ip ospf interface command provides the following insights:

  • Interface Reachability: The command output specifically describes the OSPF state and roles for the GigabitEthernet 0/0 interface, confirming that the Designated Router (ID 1.1.1.1) is the elected leader for this specific multiaccess segment.
  • Hello Timer: The default OSPF Hello interval for broadcast networks is 10 seconds. The output shows "Hello due in 00:00:01," which means 9 seconds have elapsed since the last Hello packet was transmitted.
  • Election Criteria: In an OSPF election where all priorities are equal, the router with the highest Router ID is elected DR. In this exhibit, R1 (ID 1.1.1.1) is the DR despite having a lower Router ID than R2 (ID 2.2.2.2) or the local router R3 (ID 3.3.3.3). Furthermore, R3 is a DROTHER because its priority is 0, which makes it ineligible for election regardless of its high Router ID. This confirms that Router ID values were not the primary criteria for the current election results.

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