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Exam 400-007 topic 1 question 153 discussion

Actual exam question from Cisco's 400-007
Question #: 153
Topic #: 1
[All 400-007 Questions]

An architect receives a business requirement from a CTO that states the RTO for a new system should be 4 hours, and the RPO should be less than 1 hour. Business continuity must also be ensured in the event of a natural disaster. Which replication method and data center technology should be used?

  • A. asynchronous replication over dual data centers via DWDM
  • B. asynchronous replication over geographically dispersed dual data centers via CWDM
  • C. synchronous replication over dual data centers via Metro Ethernet
  • D. synchronous replication over geographically dispersed dual data centers via MPLS
Show Suggested Answer Hide Answer
Suggested Answer: D 🗳️
by mostafabebers at April 20, 2023, 11:49 p.m.

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Nery
2 months, 3 weeks ago
Selected Answer: C
C is the correct answer..Metro Ethernet provides low-latency, high-speed connectivity, which is essential for synchronous replication.
upvoted 1 times
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ba7a09d
6 months ago
Selected Answer: D
CDWM is short haul
upvoted 1 times
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anonymousch
8 months ago
Selected Answer: D
Answer D is correct
upvoted 1 times
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famov66542
1 year, 1 month ago
Selected Answer: B
Asynchronous works over longer distances and Synchronous works better when locations. So option D isn't applicable. Option B also meets RTP and RPO. https://www.nakivo.com/blog/synchronous-vs-asynchronous-replication-strategy/
upvoted 3 times
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maddyr
1 year, 8 months ago
Selected Answer: D
D is correct, also need to ensure business continuity in the event of natural disaster. Dual DC's in separate locations is needed.
upvoted 1 times
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Jentti
2 years ago
Selected Answer: B
Replicating using over IP solution is quite inefficient compared to having CWDM lambda and being able to use native SAN and storage protocols. I would go with B.
upvoted 3 times
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bdp123
2 years, 1 month ago
Selected Answer: D
smaller RPO mandates continuous data protection and synchronous replication https://www.sciencedirect.com/topics/computer-science/synchronous-replication https://www.cisco.com/c/dam/en_us/about/ciscoitatwork/downloads/ciscoitatwork/pdf/Cisco_IT_Case_Study_Fibre_Channel_over_IP.pdf
upvoted 4 times
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mostafabebers
2 years, 2 months ago
Answer B
upvoted 1 times
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Community vote distribution
A (35%)
C (25%)
B (20%)
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