R1, R2, R3, and R4 run IS-IS, and the DIS priorities of their interfaces are...

[: HCIP-Datacom-Core Technology Training Material (IS-IS DIS Election Mechanism)​​., Given DIS Priorities:, R1: Priority = 10, R2: Priority = 20, R3: Priority = 30, R4: Priority = 40, R4 has the highest DIS priority of 40, which makes it the clear choice for DIS election., Scenario Details:, Since all devices are started simultaneously, the DIS election process will follow the priorities without requiring a tie-breaker (System ID)., Conclusion:, The device with the highest DIS priority is R4, and it will be elected as the DIS., ]