5.2 Maintaining and Troubleshooting Connectivity Issues. Considerations Include: PROFESSIONAL-CLOUD-NETWORK-ENGINEER Practice Questions (Page 1)

Questions 1–5

1. 1foundation · easy

   During a rolling update, an instance is deregistered from an Application Load Balancer target group. What happens to existing connections to that instance if connection draining is enabled?

   • AExisting connections are allowed to complete within the draining timeout, and new connections are not sent to the instance.
   • BExisting connections are immediately redirected to another healthy instance.
   • CExisting connections are terminated immediately, and new connections are sent to the instance.
   • DExisting connections are kept open indefinitely until the instance is healthy again.
   Reveal Solution Discussion Select an answer first
2. 2application · medium

   Your organization has two Dedicated Interconnect connections from the same on-premises location to two different Google Cloud edge points of presence. One of the links fails. You need to ensure that traffic continues to flow without manual intervention. What is the most important configuration to have in place?

   • AVPC Flow Logs enabled on the VPC to monitor the traffic.
   • BA second VLAN attachment on the same interconnect link.
   • CA static route to the on-premises network with a lower priority than the BGP route.
   • DBGP sessions with the same priority on both Cloud Routers so traffic automatically fails over.
   Reveal Solution Discussion Select an answer first
4. 3foundation · easy

   A BGP session is established, but routes are not being advertised. What should you check?

   • ACheck the advertised routes and BGP policies on the Cloud Router
   • BCheck DNS resolution for the on-premises router
   • CCheck firewall rules in the VPC
   • DCheck the VPN tunnel status
   Reveal Solution Discussion Select an answer first
5. 4foundation · easy

   Which Google Cloud service can be used to monitor the availability and performance of Cloud Interconnect connections?

   • ACloud DNS
   • BCloud Audit Logs
   • CCloud Logging
   • DCloud Monitoring
   Reveal Solution Discussion Select an answer first
6. 5foundation · easy

   A VPN tunnel is down. Which of the following is the FIRST step in a systematic troubleshooting approach?

   • AReview VPN gateway logs for IKE errors
   • BRecreate the VPN tunnel
   • CVerify that the on-premises router is advertising the correct routes
   • DCheck the VPN tunnel status in Cloud Console or via gcloud
   Reveal Solution Discussion Select an answer first