单项选择题

Which statement about MPLS TE Fast Reroute （FRR） link protection operation is not true？（）

A.It requires a next-hop backup tunnel.
B.The backup tunnel terminates on the same tail-end router as the primary tunnel.
C.The point of local repair （PLR） swaps the label and pushes the backup label.
D.The restoration time is expected to be under 50 ms.
E.The backup tunnel can have associated bandwidth capacity

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单项选择题

Which router or router combination is used to calculate the MPLS traffic engineering tunnel path？（）

A.head-end router and tail-end router
B.middle-point router
C.head-end router
D.tart-end router
E.tail-end router

单项选择题

Which Cisco IOS command displays the export VPN route target value of a VRF？（）

A.show ip vrf all
B.show ip vrf route-targets all
C.show ip vrf summary
D.show ip vrf interfaces
E.show ip vrf detail
F.show ip vrf

多项选择题

Which three statements about OSPF partial SPF are true？（）

A.If it is triggered by Type 4， all Type 4 LSAs that announce a certain ASBR and all Type 5 and 7 LSAs are processed
B.If it is triggered by Types 5 and 7， all Type 5 and 7 LSAs that contribute to a certain destination are processed.
C.If it is triggered by Type 2， all Type 2 LSAs that contribute to a certain destination are processed.
D.If it is triggered by the change of Type 3， 4， 5， and 7 LSAs.
E.If it is triggered by the change of Type 2， 3， 5， and 7 LSAs