多项选择题
In which two ways can you influence how downstream LSRs treat MPLS traffic?（）
A. Use an EXP rewrite table.
B. Use a DSCP rewrite table.
C. Statically assign a CoS value to an LDP-signaled LSP.
D. Statically assign a CoS value to an RSVP-signaled LSP.
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A. Origin
B. AS path
C. Next hop
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单项选择题
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A. 32 bits
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单项选择题
What is the default function of a secondary path in MPLS?（）
A. to act as an equal-cost path to the primary path
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