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Exam 352-001 All Questions

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Exam 352-001 topic 1 question 119 discussion

Actual exam question from Cisco's 352-001
Question #: 119
Topic #: 1
[All 352-001 Questions]

Which IPv4 addressing and routing scheme can increase the availability of a network service during a DoS attack?

  • A. unicast
  • B. broadcast
  • C. anycast
  • D. multicast
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Suggested Answer: C 🗳️

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A_Wolf
4 years, 3 months ago
C Depending on how anycast is implemented, it can also provide a level of high availability. If the advertisement of the anycast route is conditional on some sort of health check (e.g. a DNS query for a well known domain, in this example), then as soon as a server fails its route can be removed. Once the network reconverges, user requests will be seamlessly forwarded to the next closest instance of DNS, without the need for any manual intervention or reconfiguration.
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