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Topic starter
15/07/2022 1:48 pm
Refer to the exhibit.
An attacker can advertise OSPF fake routes from 172.16.20.0 network to the OSPF domain and black hole traffic .
Which action must be taken to avoid this attack and still be able to advertise this subnet into OSPF?
- A . Configure 172.16.20.0 as a stub network.
- B . Apply a policy to filter OSPF packets on R2.
- C . Configure a passive Interface on R2 toward 172.16.20.0.
- D . Configure graceful restart on the 172.16.20.0 interface.
Suggested Answer: C