Chapter 11- Monitoring

Which of the following is like a filter that can be used to search for metrics; for example, if you wanted to check CPU utilization on a specific EC2 instance?

• Namespace

• Dashboard

• Dimension

• Metric

Answer explanation

A dimension is like a filter (e.g., you can use the InstanceId dimension to search for metrics related to a specific EC2 instance).

Which of the following CloudWatch actions enables you to create an alarm associated with a CloudWatch metric so that you can be alerted if a threshold has been reached?

• CreateMetricAlarm

• PutMetricAlarm

• SetAlarmState

• PutMetricData

Answer explanation

PutMetricAlarm creates an alarm associated with a metric to alert you if a threshold has been reached.

A web URL that you are trying to connect to is responding with the following HTTP status code: 404 File not found. Which of the following options could be the reason for receiving this error?

• The server is down.

• You typed the URL incorrectly.

• The application is experiencing an internal failure.

• The server is experiencing performance issues.

Answer explanation

404 File not found means that the requested file is not on the server. It could mean that you typed the URL incorrectly.

Which of the following services can you use to monitor and report on performance metrics for your AWS Infrastructure?

• CloudFormation

• CloudTrail

• CloudWatch

• X-Ray

Answer explanation

CloudWatch provides data with actionable insights and collects data in the form of logs, metrics, and events. CloudWatch can be used to monitor and report on performance metrics for your AWS Infrastructure.

Which of the following CloudWatch actions enables you to publish metric data points to CloudWatch?

• PutDashboard

• PutMetricData

• PublishMetricData

• PutMetricAlarm

Answer explanation

PutMetricData publishes metric data points to CloudWatch.

Which of the following services can you use to track all user activity and API usage in your AWS account?

• CloudWatch

• CloudFormation

• IAM

• CloudTrail

Answer explanation

CloudTrail enables governance, compliance, operational auditing, and risk auditing of your account. It tracks user activity and API usage.

Your application sends application logs to CloudWatch, and your team would like the ability to query the logs when troubleshooting application failures. Which of the following will enable the team to query the logs?

• CloudWatch Logs Insights

• Macie

• CloudWatch alarms

• OpenSearch service

Answer explanation

CloudWatch Logs Insights enables you to query logs that are stored in CloudWatch Logs and will enable the team to troubleshoot application failures.

Which of the following is a container for CloudWatch metrics?

• Namespace

• Dashboard

• Dimension

• Metric

Answer explanation

A namespace is a container for CloudWatch metrics (e.g., EC2 uses the AWS/EC2 namespace). Metrics in different namespaces are isolated from each other so that metrics from different applications are not mistakenly aggregated into the same statistics.

Which of the following tools can you use to monitor CPU utilization metrics for your EC2 instances?

• CloudWatch

• AWS Config

• X-Ray

• CloudTrail

Answer explanation

CloudWatch provides data with actionable insights and collects data in the form of logs, metrics, and events. CloudWatch can you use to monitor CPU utilization metrics for your EC2 instances.

A web URL that you are trying to connect to is responding with the following HTTP status code: 503 service unavailable. Which of the following options could be the reason for receiving this error?

• You are not authorized to access the URL.

• The requested page does not exist.

• The application could be experiencing a performance issue.

• You typed the website address incorrectly.

Answer explanation

503 service unavailable is a server-side error. It means that something is going wrong with the software running on the server and often indicates a performance issue.