Equipment Maintenance & Calibration Flashcards
7 cards from real Architecting on AWS Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Equipment Maintenance & Calibration flashcards as text
An architect wants to calibrate Auto Scaling to maintain exactly 60% average CPU utilization across a fleet. Which scaling policy type is most appropriate?
Answer: Target tracking scaling policy
Target tracking scaling policies automatically adjust capacity to keep a chosen CloudWatch metric at a specified target value, such as 60% average CPU.
A company needs to ensure RDS Multi-AZ failover completes within 60 seconds during maintenance events. Which action most directly reduces failover time?
Answer: Enable RDS Proxy to absorb connection storms
RDS Proxy maintains a warm connection pool and absorbs the reconnection spike during failover, making the failover effectively transparent to applications.
During scheduled maintenance, a DynamoDB table's provisioned throughput must be temporarily increased and then returned to baseline. What is the most operationally efficient way to automate this?
Answer: Lambda function triggered by EventBridge Scheduler
An EventBridge Scheduler rule can trigger a Lambda function on a cron schedule to update DynamoDB provisioned capacity before and after the maintenance window.
An operations team must track software inventory — installed packages, OS version, and running services — across 1,000 EC2 instances. Which AWS service collects this data without requiring custom scripts?
Answer: AWS Systems Manager Inventory
SSM Inventory collects metadata about installed applications, network configurations, and running services from managed instances and stores results in S3 or Systems Manager.
A solutions architect must ensure that EC2 instances in an Auto Scaling group are replaced with the latest approved AMI on a weekly cadence. Which approach achieves this with the least operational overhead?
Answer: Use EC2 Image Builder pipeline with a launch template update and instance refresh
EC2 Image Builder builds and distributes the new AMI; updating the launch template and triggering an Auto Scaling instance refresh replaces instances in a controlled, rolling manner.
A team needs to validate that critical Lambda functions respond within SLA thresholds after each deployment. Which AWS-native feature continuously invokes a function on a schedule to test availability?
Answer: CloudWatch Synthetics Canaries
CloudWatch Synthetics Canaries run scheduled, scripted checks against endpoints or functions, alerting when responses deviate from expected behavior.
An architect is designing a process to keep EC2 Systems Manager (SSM) agents up to date automatically across an entire fleet. What is the recommended approach?
Answer: Use SSM State Manager association with the AWS-UpdateSSMAgent document
An SSM State Manager association using the AWS-UpdateSSMAgent document runs on a defined schedule to keep SSM agents current across all managed instances.