单项选择题

Which configuration command allows the ERX Edge Router to perform Unicast Reverse Path Forwarding lookups on all packets received on an IP interface?（）

A. ip sa-validate
B. ip split-horizon
C. ip access-routes
D. ip filter-options

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单项选择题
What are the maximum number of classifiers per policy group?（）

A. 100
B. 128
C. 256
D. 512
多项选择题
Which two statements are true about precedence values in policy?（） (Choose two.)

A. 1 is the default precedence.
B. A lower number is preferred.
C. A higher number is preferred.
D. 100 is the default precedence.
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