Within IS-IS, the restart helper performs which task?（）A、It sends CSNPs to the restarting router.B、It periodically sends TLV 211 to the restarting router.C、It informs other routers in the domain that a router has restarted.D、It tears down adjacency and se
题目
Within IS-IS, the restart helper performs which task?（）
- A、It sends CSNPs to the restarting router.
- B、It periodically sends TLV 211 to the restarting router.
- C、It informs other routers in the domain that a router has restarted.
- D、It tears down adjacency and sends its entire database after 30 seconds.
