AWS DevOps Incident and Event Response 2

Question 1

An EC2 instance is under memory pressure during an incident. Which CloudWatch metric would reveal this, and what is required to collect it?

Accepted Answer

MemoryUtilization — requires the CloudWatch Agent

Answer

MemoryUtilization is not published by default because AWS hypervisors cannot see guest OS memory; the CloudWatch Agent must be installed on the instance to collect and publish this metric.

Question 2

Which AWS service uses machine learning to proactively detect anomalies in your application and infrastructure behavior without requiring you to configure manual thresholds?

Accepted Answer

Amazon DevOps Guru

Answer

Amazon DevOps Guru applies ML to your CloudWatch metrics, logs, and events to surface anomalous behavior and actionable recommendations without predefined alarm thresholds.

Question 3

During an incident, your runbook must execute shell commands simultaneously on 50 EC2 instances. Which Systems Manager feature is designed for this use case?

Accepted Answer

Systems Manager Run Command

Answer

Systems Manager Run Command executes commands or scripts across a fleet of managed instances simultaneously without requiring SSH or RDP access.

Question 4

Your incident response plan must automatically page on-call engineers via PagerDuty when a critical CloudWatch alarm fires. Which AWS service provides native integration for this?

Accepted Answer

AWS Systems Manager Incident Manager

Answer

Systems Manager Incident Manager supports native contact and escalation plan integrations with third-party tools like PagerDuty and OpsGenie through response plans.

Question 5

What is the correct sequence of phases in the AWS incident management lifecycle?

Accepted Answer

Prepare → Detect → Respond → Recover → Learn

Answer

The AWS incident lifecycle starts with Prepare (runbooks and plans), then Detect, Respond, Recover, and Learn (post-incident analysis) — you must prepare before you can respond effectively.

AWS Practice Test

AWS Practice Test

AWS DevOps Incident and Event Response 2