Refer to the exhibit. R1 is connected to two service providers and is under a DDoS attack.
Which statement about this design is true if URPF in strict mode is configured on both interfaces?

A. R1 drops all traffic that ingresses either interface that has a FIB entry that exits a different interface.

B. R1 drops destination addresses that are routed to a null interface on the router.

C. R1 permits asymmetric routing as long as the AS-PATH attribute entry matches the connected AS.

D. R1 accepts source addresses on interface gigabitethernet0/1 that are private addresses.








 

Suggested Answer: A



This question is in 350-501 SPCOR exam 
For getting CCNP Service Provider Certificate


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