Google Professional Cloud Network Engineer Question 773
Select 3Google Cloud PlatformYou are a network engineer responsible for troubleshooting intermittent packet loss and high latency in a multi-region Google Cloud architecture. To identify the root cause, you decide to use the Network Performance Dashboard. Which steps should you take to analyze the issue effectively?
- A
Filter the dashboard by the affected time range and regions to narrow down the scope of the issue.
- B
Examine the latency heatmap to identify any spikes in latency during the affected time period.
- C
Review the packet loss metrics for all Google Cloud services globally, regardless of the affected regions.
- D
Drill down into specific virtual machine (VM) interface-level metrics to isolate the cause of packet loss.
- E
Enable packet mirroring to capture detailed packet-level data for the affected regions directly from the dashboard.
Show answer and explanation
Correct answers: A, B, D
Explanation
To effectively troubleshoot packet loss and latency using the Network Performance Dashboard, it is essential to narrow the scope of analysis by filtering data based on the time range and affected regions. The latency heatmap helps visualize network performance over time, while drilling down into VM interface-level metrics allows for detailed analysis of specific components. Broad global metrics and unrelated features like packet mirroring are not directly relevant to this use case.
- A. Correct.
Filtering by the affected time range and regions is critical to narrowing down the scope of the issue and focusing on the relevant data. This is a standard best practice when using the Network Performance Dashboard.
- B. Correct.
The latency heatmap is a valuable tool in the Network Performance Dashboard for identifying spikes in latency, which can indicate network issues during specific periods.
- C. Incorrect.
Reviewing packet loss metrics for all Google Cloud services globally may provide too broad a dataset and is not specific enough to identify the root cause in a particular multi-region architecture.
- D. Correct.
Drilling down into specific VM interface-level metrics helps isolate the issue further, allowing you to identify whether a particular VM or network interface is contributing to the packet loss.
- E. Incorrect.
Packet mirroring is not available directly from the Network Performance Dashboard. It is a separate feature in Google Cloud and involves setting up additional configurations outside of the dashboard.