AWS DevOps Monitoring and Logging 3

Question 1

When configuring a CloudWatch Alarm, what does setting the 'Treat missing data as' option to 'breaching' cause?

Accepted Answer

The alarm transitions to ALARM state when data is missing, treating absence as a failure

Answer

Setting missing data to 'breaching' means the alarm treats absent data points as if the threshold were exceeded, triggering an ALARM state.

Question 2

A Lambda function processes deployment events and writes structured JSON logs. Which CloudWatch feature lets the team count error events per minute without changing the function code?

Accepted Answer

CloudWatch Metric Filters

Answer

Metric Filters scan incoming log data for patterns and increment a custom metric each time a match is found, requiring no code changes.

Question 3

Which X-Ray concept represents the end-to-end journey of a single request as it passes through multiple services?

Accepted Answer

Trace

Answer

A Trace in X-Ray is the complete collection of segments and subsegments generated by a single request across all services it touches.

Question 4

A DevOps engineer needs to alert on-call staff when deployment error rates exceed 5% over a 5-minute window. The alerting must include a runbook link. Which SNS feature supports this?

Accepted Answer

SNS message attributes in the alarm description or action notification

Answer

CloudWatch Alarm descriptions and SNS message bodies can include runbook URLs, which are delivered to on-call staff via the SNS notification.

Question 5

Which CloudWatch Logs feature identifies which log sources (IP addresses, users, URLs) contribute most to log volume or error counts?

Accepted Answer

Contributor Insights

Answer

Contributor Insights analyzes log data to identify the top contributors (heavy hitters) to a metric, such as the IPs generating the most errors.

AWS Practice Test

AWS Practice Test

AWS DevOps Monitoring and Logging 3