Which statement is true about IS-IS hello (IIH) PDUs?

Which statement is true about IS-IS hello (IIH) PDUs?

Which statement is true about IS-IS hello (IIH) PDUs?

A.
The same IIH PDU is used for both point-to-point and broadcast networks.

B.
IIH PDUs maintain the link-state database synchronization.

C.
IIH PDUs provide the priority value used in DIS election.

D.
IIH PDUs are transmitted only at the beginning of adjacency establishment.



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