Architecting on AWS Certification Equipment Maintenance & Calibration 5

Question 1

An architect wants to calibrate CloudFront cache behavior so that dynamic API responses are never cached while static assets are cached for 24 hours. How should cache policies be configured?

Accepted Answer

Use separate cache behaviors with CachingDisabled policy for the API path and a custom TTL policy for static paths

Answer

CloudFront supports multiple cache behaviors per distribution; assigning CachingDisabled to the /api/* path and a custom TTL policy to /static/* provides precise per-path cache control.

Question 2

A company runs a fleet of IoT-connected industrial sensors that send telemetry to AWS IoT Core. The team needs to calibrate alert thresholds centrally and push updated configuration to all devices. Which feature enables this?

Accepted Answer

AWS IoT Jobs

Answer

AWS IoT Jobs allows you to define and send remote operations — such as configuration updates or firmware pushes — to a set of devices, tracking execution status per device.

Question 3

An operations team must ensure that AWS Lambda function concurrency is capped at 200 to prevent downstream database overload during traffic spikes. How should this be configured?

Accepted Answer

Configure a reserved concurrency limit of 200 on the specific Lambda function

Answer

Setting a reserved concurrency limit on a specific Lambda function ensures it never scales beyond that threshold, protecting downstream resources from overload.

Question 4

A data engineering team needs to recalibrate Kinesis Data Streams throughput by adjusting the shard count in response to sustained backlog growth. What is the correct approach?

Accepted Answer

Use the UpdateShardCount API to rescale the stream

Answer

The UpdateShardCount API allows online resharding of a Kinesis Data Stream, increasing or decreasing shard count without data loss or stream recreation.

Question 5

During a maintenance window, an architect needs to temporarily suspend an Auto Scaling group from launching or terminating instances while manual work is performed. Which action achieves this?

Accepted Answer

Suspend the Launch and Terminate scaling processes

Answer

Suspending the Launch and Terminate processes in an Auto Scaling group halts all scale-out and scale-in activities while preserving the existing running instances.

Architecting on AWS Certification Practice Test

Architecting on AWS Certification Practice Test

Architecting on AWS Certification Equipment Maintenance & Calibration 5