Google Professional Cloud Network Engineer Question 761
Single answerGoogle Cloud PlatformYou are managing a GCP project for a multi-tier web application, and you suspect that the application’s performance issues are due to high latency and bandwidth bottlenecks between services. You decide to use the Network Topology tool in the Google Cloud Console to analyze the traffic flows. During the analysis, you notice unusually high egress traffic between the application server and the database server. What step should you take next to troubleshoot and optimize the network traffic?
- A
Enable VPC Flow Logs to capture and analyze network traffic patterns between the application and database servers.
- B
Increase the bandwidth of the application server's network interface to handle the high egress traffic.
- C
Redesign the application to distribute database queries across multiple zones to reduce traffic.
- D
Configure firewall rules to block all egress traffic from the application server to the database server.
Show answer and explanation
Correct answer: A
Explanation
The Network Topology tool provides a high-level view of traffic flows and throughput in your GCP environment, helping you identify anomalies such as high egress traffic. By enabling VPC Flow Logs, you can gather detailed insights into network traffic to pinpoint the root cause, such as inefficient queries, misconfigured services, or excessive data transfers. This is the correct next step for troubleshooting before making changes to the architecture or network configuration.
- A. Correct.
Enabling VPC Flow Logs will allow you to capture detailed information about network traffic. This is a critical step to identify the root cause of high egress traffic and understand the traffic patterns.
- B. Incorrect.
Increasing the bandwidth of the application server's network interface is not a valid first troubleshooting step. The issue may not be related to bandwidth limitations but could be due to inefficient communication or misconfigured components.
- C. Incorrect.
Redesigning the application is a complex and costly solution that should only be considered after validating the root cause of the issue. It is not the immediate next step in troubleshooting.
- D. Incorrect.
Blocking all egress traffic from the application server to the database server would break the application and is not a valid solution. The goal is to analyze and optimize traffic, not disrupt it.