单选题Within IS-IS, the restart helper performs which task?（）AIt sends CSNPs to the restarting router.BIt periodically sends TLV 211 to the restarting router.CIt informs other routers in the domain that a router has restarted.DIt tears down adjacency and sends its entire database after 30 seconds.
单选题
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.
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A router receives a packet from a neighbor with an MPLS shim header value of 0.What does the router do with this packet?() A. It performs a label pop operation and an IP lookup.B. It performs a label swap operation and an IP lookup.C. It sends an error message toward the egress router.D. It sends an error message toward the ingress router.
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Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）A、It tears down the BGP session.B、It sends a restart message to the peer.C、It marks all routes from that peer as stale.D、It sends a BGP refresh message to the peer
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单选题Which action does a BGP speaker take when it detects that the reset state bit is set in an openmessage?（）AIt tears down the BGP session.BIt sends a restart message to the peer.CIt marks all routes from that peer as stale.DIt sends a BGP refresh message to the peer
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