Amazon Web Services Updated SOA-C02 Exam Questions and Answers by nylah

To reduce S3 storage costs while ensuring the images remain highly available and immediately accessible, transitioning the images to S3 Standard-IA after 7 days is the most cost-effective solution.

Understand Storage Classes:

S3 Standard-IA (Infrequent Access) is designed for data that is accessed less frequently but requires rapid access when needed. It offers lower storage costs compared to S3 Standard, but higher retrieval costs.

To achieve a limited rollout of the new website to 20% of the company's customers using Amazon Route 53, a weighted routing policy is the most appropriate solution.

Weighted Routing Policy:

Weighted routing lets you associate multiple resources with a single domain name and choose how much traffic is routed to each resource.

Configuration:

Open the Route 53 console.

Select the hosted zone and choose "Create Record Set."

Create two records for your domain:

One record for the original resource with a weight of 80.

Another record for the new resource with a weight of 20.

References:

Amazon Route 53 Weighted Routing

When experiencing slow file retrieval from an EFS file system as usage increases, configuring the file system for Provisioned Throughput can improve performance.

Provisioned Throughput:

Amazon EFS offers two throughput modes: Bursting Throughput and Provisioned Throughput.

With Provisioned Throughput, you can set a fixed throughput limit for your file system independent of the amount of data stored.

Configuring Provisioned Throughput:

Go to the EFS console and select your file system.

Click on "Manage File System" and then "Edit."

Choose the "Provisioned Throughput" option and set the desired throughput limit.

Benefits:

Provisioned Throughput ensures consistent performance and is beneficial for applications with high throughput requirements.

It helps in cases where the default Bursting Throughput mode might not provide sufficient throughput during peak times.

References:

Amazon EFS Performance

Managing Amazon EFS File Systems

To ensure CloudTrail is re-enabled immediately if it is disabled, you can use AWS Config with an automatic remediation action.

Create AWS Config Rule:

Configure an AWS Config rule that triggers when there are changes to the CloudTrail configuration.