IS-IS elects a DIS on a broadcast network. Which of the following statements regarding DIS are true? (Choose three.)

Question

Kaisheng Wang · Accepted Answer

IS-IS elects the DIS by comparing preferences. If the preferences are the same, IS-IS compares MAC addresses.

Kaisheng Wang · Accepted Answer

On a broadcast network, the DIS sends Hello PDUs at a frequency that is three times the frequency of non-DIS routers.

Kaisheng Wang · Accepted Answer

The DIS periodically sends CSNPs to ensure LSDB synchronization.

Kaisheng Wang · Answer

DIS preemption is supported. After successful DIS preemption, LSPs do not need to be flooded.

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