多项选择题
A. LDP routes B. IPv6 routes C. RSVP routes D. Layer 2 VPN routes E. Layer 3 VPN routes
Which three pre-conditions must be met before an OSPF r...
多项选择题Which three pre-conditions must be met before an OSPF router can perform graceful restart? （）
A. Router must be an ABR. B. Router must contain one sham link. C. The network topology must be stable. D. Router must be able to forward packets. E. Neighbors must support graceful restart.
Which Behavior Aggregate (BA) is used to classify traff...
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
Which mechanism does External BGP use to prevent the fo...
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
