单项选择题

What is required to enable the use of metrics larger than 63 for traffic engineering in IS-IS？（）

A.Nothing， wide metrics are used by default in IS-IS
B.Enable wide-metrics-only under protocol IS-IS
C.Enable traffic-engineering under protocols IS-IS
D.Disable TVL’s 2 and 128 which carry the 6-bit metrics （0-63）.

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单项选择题

Which is a step in the JUNOS software CSPF algorithm？（）

A.Prune links that are bidirectional.
B.Eliminate paths with insufficient MTU
C.Eliminate paths of more than 15 hops.
D.Prune links that do not contain the included administrative group.

多项选择题

What are three RSVP messages？（）

A.PathErr：Path error
B.ResvErr：Reservation error
C.PathConf：Path confirmation
D.ResvConf：Reservation confirmation

单项选择题

What is the optimize timer on an RSVP-signaled Label-Switched Path （LSP）？（）

A.the time it takes to identify the optimal path for the LSP
B.the interval at which the ingress router recalculates the LSP’s path
C.the time the ingress router takes to establish the primary path
D.the maximum number of times the ingress router tries to establish the primary path