Google Professional Cloud Network Engineer Question 721
Select 3Google Cloud PlatformYou are a network engineer managing a hybrid cloud environment that uses Cloud VPN and Cloud Router for connectivity between your on-premises data center and Google Cloud. Recently, you have experienced intermittent connectivity issues. Which metrics should you monitor to identify the root cause of the problem?
- A
Tunnel BGP session state for Cloud VPN
- B
Packet loss rate for Cloud Interconnect VLAN attachments
- C
Round-trip time (RTT) for Cloud VPN tunnels
- D
CPU utilization of the on-premises gateway
- E
Route propagation status in Cloud Router
Show answer and explanation
Correct answers: A, C, E
Explanation
To troubleshoot intermittent connectivity issues with Cloud VPN, it is important to monitor metrics specific to its performance and routing. The BGP session state ensures the tunnel is fully operational, while RTT helps identify latency issues. Additionally, route propagation in Cloud Router ensures routes are properly exchanged, which is essential for connectivity. Packet loss rate and on-premises CPU utilization are either irrelevant or outside the scope of Google Cloud monitoring.
- A. Correct.
Monitoring the tunnel BGP session state in Cloud VPN is critical to ensure that the BGP session between Cloud Router and the on-premises network is established and stable.
- B. Incorrect.
Packet loss rate is not relevant to Cloud VPN because it applies to Cloud Interconnect VLAN attachments, which are unrelated in this scenario.
- C. Correct.
Round-trip time (RTT) can help identify latency issues within the Cloud VPN tunnel, which might be contributing to connectivity problems.
- D. Incorrect.
CPU utilization of the on-premises gateway is not a Google Cloud metric and is outside the scope of Google Cloud monitoring tools.
- E. Correct.
Monitoring route propagation status in Cloud Router ensures that routes are correctly exchanged between your on-premises network and Google Cloud.