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Exam AWS Certified DevOps Engineer - Professional DOP-C02 All Questions

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Exam AWS Certified DevOps Engineer - Professional DOP-C02 topic 1 question 349 discussion

Exam question from Amazon's AWS Certified DevOps Engineer - Professional DOP-C02
Question #: 349
Topic #: 1
[All AWS Certified DevOps Engineer - Professional DOP-C02 Questions]

A company runs a web application on Amazon Elastic Kubernetes Service (Amazon EKS). The company uses Amazon CloudFront to distribute the application. The company recently enabled AWS WAF. The company set up Amazon CloudWatch Logs to send logs to an aws-waf-logs log group.

The company wants a DevOps engineer to receive alerts if there are sudden changes in blocked traffic. The company does not want to receive alerts for other changes in AWS WAF log behavior. The company will tune AWS WAF rules over time.

The DevOps engineer is currently subscribed to an Amazon Simple Notification Service (Amazon SNS) topic in the environment.

Which solution will meet these requirements?

  • A. Create a CloudWatch Logs metrics filter for blocked requests on the AWS WAF log group to create a custom metric. Create a CloudWatch alarm by using CloudWatch anomaly detection and the published custom metric. Configure the alarm to notify the SNS topic to alert the DevOps engineer.
  • B. Create a CloudWatch anomaly detector for the log group. Create a CloudWatch alarm by using metrics that the CloudWatch anomaly detector publishes. Use the high setting for the LogAnomalyPriority metric. Configure the alarm to go into alarm state if a static threshold of one anomaly is detected. Configure the alarm to notify the SNS topic to alert the DevOps engineer.
  • C. Create a CloudWatch metrics filter for counted requests on the AWS WAF log group to create a custom metric. Create a CloudWatch alarm that activates when the sum of blocked requests in the custom metric during a period of 1 hour is greater than a static estimate for the acceptable number of blocked requests in 1 hour. Configure the alarm to notify the SNS topic to alert the DevOps engineer.
  • D. Create a CloudWatch anomaly detector for the log group. Create a CloudWatch alarm by using metrics that the CloudWatch anomaly detector publishes. Use the medium setting for the LogAnomalyPriority metric. Configure the alarm to go into alarm state if a sum of anomalies over 1 hour is greater than an expected value. Configure the alarm to notify the SNS topic to alert the DevOps engineer.
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Suggested Answer: A 🗳️
by uncledana at Nov. 19, 2024, 11:24 a.m.
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Srikantha
3 weeks, 6 days ago
Selected Answer: A
Option A is the most efficient solution because it directly monitors blocked requests through a custom CloudWatch metric and uses CloudWatch anomaly detection to identify significant deviations, which is precisely what the company needs to monitor.
upvoted 2 times
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CHRIS12722222
4 months ago
Selected Answer: A
I go with option A if we want to detect SUDDEN change in blocked request, we cant do so in 1hr period as that would be too long a time and what if the blocked request normalised quickly within that 1hr. I think using anomaly detection will provide some upper and lower limit and free us from defining and tuning a static threshold
upvoted 4 times
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Slays
4 months ago
Selected Answer: C
Unc the question said: "The company does not want to receive alerts for other changes in AWS WAF log behavior" They only want notifications when blocked traffic increase, so anomaly detection doesn't fit the requirements. Gotta be C
upvoted 1 times
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uncledana
5 months, 2 weeks ago
Selected Answer: A
Option A provides the most precise and scalable solution to meet the company’s requirements. It focuses on blocked requests, uses anomaly detection for adaptive monitoring, and provides alerting through SNS when a sudden change in blocked traffic occurs.
upvoted 4 times
Slays
4 months ago
Unc the question said: "The company does not want to receive alerts for other changes in AWS WAF log behavior" They only want notifications when blocked traffic increase, so anomaly detection doesn't fit the requirements. Gotta be C
upvoted 1 times
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