A DevOps engineer needs to investigate a production issue. The application logs are in CloudWatch Logs. The engineer suspects that a specific error message appears frequently in the last hour. The engineer wants to count the occurrences of this error message and also see a sample of the log events. What is the most efficient way to do this?

Export the logs to S3 and use Athena to query them.

Use CloudWatch Logs Insights to run a query that filters for the error message and uses the stats count(*) function.

Use the CloudWatch Logs console to search for the error message in the log group.

Create a metric filter for the error message and check the metric's value.

What is the primary benefit of using CloudWatch metric streams?

Reducing the cost of storing metrics

Delivering metrics to external systems in near real time

Automatically creating dashboards

Increasing the resolution of metrics

What is the default value emitted by a metric filter when a pattern matches a log event?

The size of the log event in bytes

AWSCertified DevOps Engineer - Professional

Domain 4Objective 1

Task Statement 4.1: Configure the Collection, Aggregation, and Storage of Logs and Metrics. DOP-C02 Practice Questions (Page 5)

Part of the Content Domain 4: Monitoring and Logging domain, which accounts for 15% of the DOP-C02 exam. AWS does not publish an official question count, but from its 180-minute exam (~70–120 total, ~11–18 in this domain), expect 4–6 from this objective — we provide 30 practice questions to prepare you well beyond it. (estimate)

30questions here

6free pages

13concepts

15%of the exam

13 Concepts in This Objective

CloudWatch metrics fundamentals
Real-time log ingestion
Encryption for logs and metrics
IAM for log collection
Secure log storage and management
Metric filters
CloudWatch metric streams
Custom metrics collection
Log storage lifecycle management
CloudWatch log subscriptions
Log search with filter and pattern syntax
CloudWatch Logs Insights
KMS encryption for log data

Questions 21–25

21application · medium
A DevOps engineer needs to investigate a production issue. The application logs are in CloudWatch Logs. The engineer suspects that a specific error message appears frequently in the last hour. The engineer wants to count the occurrences of this error message and also see a sample of the log events. What is the most efficient way to do this?
Select an answer first
22foundation · easy
What is the primary benefit of using CloudWatch metric streams?
Select an answer first
23foundation · easy
Which AWS service or tool can collect custom metrics from on-premises servers and send them to CloudWatch?
Select an answer first
24foundation · easy
Which CloudWatch Logs feature allows you to search for specific terms within log events?
Select an answer first
25foundation · easy
What is the default value emitted by a metric filter when a pattern matches a log event?
Select an answer first

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Task Statement 4.1: Configure the Collection, Aggregation, and Storage of Logs and Metrics. DOP-C02 Practice Questions (Page 5)

Questions 21–25

What is the primary benefit of using CloudWatch metric streams?

Which AWS service or tool can collect custom metrics from on-premises servers and send them to CloudWatch?

Which CloudWatch Logs feature allows you to search for specific terms within log events?

What is the default value emitted by a metric filter when a pattern matches a log event?

Keep studying — Content Domain 4: Monitoring and Logging