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PROFESSIONAL-CLOUD-NETWORK-ENGINEER · Question #208

PROFESSIONAL-CLOUD-NETWORK-ENGINEER Question #208: Real Exam Question with Answer & Explanation

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Submitted by diego_uy· Apr 18, 2026Implementing network security

Question

Your company's current network architecture has two VPCs that are connected by a dual-NIC instance that acts as a bump-in-the-wire firewall between the two VPCs. Flows between pairs of subnets across the two VPCs are working correctly. Suddenly, you receive an alert that none of the flows between the two VPCs are working anymore. You need to troubleshoot the problem. What should you do? (Choose two.)

Options

  • AVerify that a VPC Service Controls perimeter has not been enabled for the project that contains
  • BUse Cloud Logging to verify that there were no modifications to the VPC firewall rules or policies
  • CVerify that a public IP address has not been assigned to any network interface of the dual-NIC
  • DVerify that the dual-NIC instance has the --can-Ip-Forward attribute enabled.
  • EVerify that the dual-NIC instance has not been added to a backend service.

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Topics

#Network Troubleshooting#VPC Firewall Rules#IP Forwarding#Inter-VPC Connectivity
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