Google Professional Cloud Network Engineer Question 723
Select 3Google Cloud PlatformYour organization uses Cloud VPN to securely connect its on-premises data center to Google Cloud. The network team has noticed intermittent connectivity issues and slow performance when accessing cloud resources. As a Professional Cloud Network Engineer, which monitoring metrics should you prioritize to diagnose the issue?
- A
BGP session state for the Cloud Router associated with the VPN
- B
Packet loss percentage on the Cloud VPN tunnel
- C
CPU utilization of the Compute Engine instances in the VPC
- D
Round-trip latency of the Cloud VPN tunnel
- E
Total bytes received on the VLAN attachment
Show answer and explanation
Correct answers: A, B, D
Explanation
To diagnose connectivity and performance issues in Cloud VPN, you should focus on metrics that directly impact the tunnel's health and performance, such as BGP session state, packet loss percentage, and round-trip latency. These metrics help identify whether the issue is related to routing, network reliability, or latency. Other metrics, like CPU utilization or VLAN attachment statistics, are either unrelated or pertain to different Google Cloud networking components.
- A. Correct.
The BGP session state is critical because it determines if the dynamic routing between the on-premises network and Google Cloud is functioning properly. If the state is down, traffic will not flow as expected.
- B. Correct.
Packet loss percentage is a key metric to monitor in Cloud VPN tunnels. High packet loss can cause intermittent connectivity and degraded performance.
- C. Incorrect.
CPU utilization of Compute Engine instances is not directly related to diagnosing connectivity or performance issues with Cloud VPN. This option is irrelevant in the context of the question.
- D. Correct.
Round-trip latency of the Cloud VPN tunnel is an important metric to evaluate the network performance and identify any latency-related issues.
- E. Incorrect.
Total bytes received on the VLAN attachment is related to Cloud Interconnect rather than Cloud VPN. This metric is not relevant to diagnosing issues with Cloud VPN.