单项选择题

Which Behavior Aggregate (BA) is used to classify traffic arriving on an LSP?（）

A. EXP
B. DSCP
C. 802.1P
D. inet-precedence

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单项选择题

Which mechanism does External BGP use to prevent the formation of routing loops?（）

A. AS path
B. Split horizon
C. Poison reverse
D. Unicast RPF check

单项选择题

By default, which JUNOS software routing table contains IPv6 unicast routes?（）

A.inet.6
B.ipv6.0
C.inet0
D.inet6.0

单项选择题

What is the purpose of IS-IS level boundaries?（）

A. Restrain the formation of adjacencies.
B. Control the flooding scope of link-state PDUs.
C. Partition the L2 backbone into multiple domains.
D. Aggregate L1 domains into a contiguous backbone.