In the IS-IS Designated Intermediate System （DIS） election process， which criteria is used for DIS selection？（）
- A、highest router ID first， then highest priority
- B、highest MAC address first， then highest priority
- C、highest router ID first， then highest MAC address
- D、highest priority first， then highest router ID
- E、highest priority first， then highest MAC address
正确答案:E
答案解析:有
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