單項選擇題

Refer to the exhibit. BGP-4 routing to the Internet，in normal behavior，may create asymmetrical routing for different prefixes. The BGP routing table indicates that traffic should follow the paths indicated in the exhibit，but packets are not going further than the border router in AS 4. What could be the cause of this problem？（）

A.TCP Intercept is configured in AS 4.
B.Unicast Reverse Path Forwarding is configured in loose mode in this router.
C.Packets may be leaving AS 1 without the BGP routing flag set to 1.
D.Unicast Reverse Path Forwarding is configured in strict mode in this router.
E.There is a missing Unicast Reverse Path Forwarding configuration.

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單項選擇題

A request arrived on your MPLS-vpn-bgp group. Due to a security breach， your customer is experiencing DoS attacks coming from specific subnets （200.0.10.0/24， 200.0.12.0/24）. You have checked all MPLS-EBGP routes being advertised to BHK from other VPN sites and found four subnets listed： 200.0.10.0/24， 200.0.11.0/24， 200.0.12.0/24， 200.0.13.0/24. You immediately apply an outbound ACL filter using the appropriate MPLS-EBGP tool： access-list 1 deny 0.0.0.0 255.255.254.255 access-list 1 permit any What happens when you apply this ACL on the MPLS-EBGP connection to BHK？（）

A.It blocks all routes.
B.It blocks the routes 200.0.12.0/24， 200.0.10.0/24 only.
C.It blocks the routes 200.0.12.0/24， 200.0.13.0/24 only.
D.It blocks the routes 200.0.10.0/24， 200.0.13.0/24 only.
E.Nothing happens， no routes are blocked.

問答題

【簡答題】WRR？

答案： WRR dequeues the number of pac...

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【簡答題】WRR？

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