ANS-C01 Question 376
Select 2Your organization is experiencing intermittent connectivity issues between EC2 instances deployed in two different AWS Regions. To diagnose the issue, you want to assess network performance and investigate if there is any packet loss or latency. Which AWS tools or services should you utilize to gather the appropriate logs and metrics?
- A
Amazon CloudWatch Metrics for VPC Flow Logs
- B
VPC Flow Logs
- C
Amazon CloudWatch Logs Insights
- D
AWS CloudTrail
- E
AWS Reachability Analyzer
Show answer and explanation
Correct answers: B, C
Explanation
To diagnose network performance and reachability issues, VPC Flow Logs provide detailed traffic data, which can be analyzed using Amazon CloudWatch Logs Insights. These tools work together to help identify packet loss, latency issues, or other network anomalies. While other options like CloudWatch Metrics or Reachability Analyzer might provide supplementary information, they are not specifically designed for diagnosing packet loss or latency.
- A. Incorrect.
Amazon CloudWatch Metrics for VPC Flow Logs can provide high-level insights into the volume of traffic, but it does not directly assess packet loss, latency, or connection issues.
- B. Correct.
VPC Flow Logs capture detailed information about the network traffic flowing to and from network interfaces in your VPC. This data can help you identify anomalies such as dropped packets or connection failures.
- C. Correct.
Amazon CloudWatch Logs Insights enables you to query and analyze VPC Flow Logs data to pinpoint specific issues, such as packet loss or latency patterns.
- D. Incorrect.
AWS CloudTrail is primarily used for monitoring API activity and changes in your AWS account, not for assessing network performance or reachability issues.
- E. Incorrect.
AWS Reachability Analyzer is useful for analyzing network paths and configuration issues but does not provide metrics or logs for packet loss or latency.