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Question 52 - CAS-004 discussion

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After a security incident, a network security engineer discovers that a portion of the company's sensitive external traffic has been redirected through a secondary ISP that is not normally used.

Which of the following would BEST secure the routes while allowing the network to function in the event of a single provider failure?

A.
Disable BGP and implement a single static route for each internal network.
Answers
A.
Disable BGP and implement a single static route for each internal network.
B.
Implement a BGP route reflector.
Answers
B.
Implement a BGP route reflector.
C.
Implement an inbound BGP prefix list.
Answers
C.
Implement an inbound BGP prefix list.
D.
Disable BGP and implement OSPF.
Answers
D.
Disable BGP and implement OSPF.
Suggested answer: C

Explanation:

Defenses against BGP hijacks include IP prefix filtering, meaning IP address announcements are sent and accepted only from a small set of well-defined autonomous systems, and monitoring Internet traffic to identify signs of abnormal traffic flows.

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asked 02/10/2024
VIVEKANANDAN BALARAMAN
37 questions
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