Last Updated on September 27, 2021 by Admin 2
IS-IS elects a DIS on a broadcast network. Which of the following statements regarding DIS are true? (Choose three.)
- DIS preemption is supported. After successful DIS preemption, LSPs do not need to be flooded.
- IS-IS elects the DIS by comparing preferences. If the preferences are the same, IS-IS compares MAC addresses.
- On a broadcast network, the DIS sends Hello PDUs at a frequency that is three times the frequency of non-DIS routers.
- The DIS periodically sends CSNPs to ensure LSDB synchronization.