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Exam Professional Cloud Network Engineer topic 1 question 142 discussion

Actual exam question from Google's Professional Cloud Network Engineer
Question #: 142
Topic #: 1
[All Professional Cloud Network Engineer Questions]

You have configured a service on Google Cloud that connects to an on-premises service via a Dedicated Interconnect. Users are reporting recent connectivity issues. You need to determine whether the traffic is being dropped because of firewall rules or a routing decision. What should you do?

  • A. Use the Network Intelligence Center Connectivity Tests to test the connectivity between the VPC and the on-premises network.
  • B. Use Network Intelligence Center Network Topology to check the traffic flow, and replay the traffic from the time period when the connectivity issue occurred.
  • C. Configure VPC Flow Logs. Review the logs by filtering on the source and destination.
  • D. Configure a Compute Engine instance on the same VPC as the service running on Google Cloud to run a traceroute targeted at the on-premises service.
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Suggested Answer: A 🗳️
by playpacman at Dec. 2, 2022, 12:56 p.m.

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ian_gcpca
3 months, 3 weeks ago
Selected Answer: A
I would use A & B to troubleshoot the issue. A test the connections between GCP and on-prem but to determine where the traffic is being dropped, you can visualize it via Network Topology and use the replay button would really be helpful. I still prefer A since this can further check and give you more details about the issue in your network and not just visualize its Topology
upvoted 1 times
ian_gcpca
3 months, 3 weeks ago
btw, there is no reply option in Network Intelligence Center Network Topology. You can just refresh and check the current traffic flow. Which is why for more detailed troubleshooting, use A
upvoted 1 times
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drg01
10 months, 1 week ago
why not B? how are you checking if its a router issue or a FW issue?
upvoted 1 times
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AzureDP900
2 years, 4 months ago
A is right
upvoted 1 times
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pfilourenco
2 years, 4 months ago
Selected Answer: A
A to test the connectivity.
upvoted 3 times
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ccieman2016
2 years, 4 months ago
Selected Answer: A
100% sure for A. https://cloud.google.com/network-intelligence-center/docs/connectivity-tests/concepts/overview
upvoted 3 times
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al_zo
2 years, 4 months ago
Selected Answer: A
A. https://cloud.google.com/network-intelligence-center/docs/connectivity-tests/concepts/test-between-networks
upvoted 1 times
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playpacman
2 years, 4 months ago
I would use A to test the connectivity.
upvoted 2 times
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C (25%)
B (20%)
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