Amazon Web Services DOP-C02 Exam With Confidence Using Practice Dumps

To meet the requirements of migrating its on-premises Windows and Linux applications to AWS and creating a pilot light DR environment in another AWS Region, the company should use Amazon FSx for NetApp ONTAP for the application storage. Amazon FSx for NetApp ONTAP is a fully managed service that provides highly reliable, scalable, high-performing, and feature-rich file storage built on NetApp’s popular ONTAP file system. FSx for ONTAP supports multiple protocols, including SMB for Windows and NFS for Linux, so the company can access the shared storage from both types of applications. FSx for ONTAP also supports NetApp SnapMirror replication, which enables the company to replicate the storage to the DR Region. NetApp SnapMirror replication is efficient, secure, and incremental, and it preserves the data deduplication and compression benefits of FSx for ONTAP. The company can use automation to launch and configure the EC2 instances in the DR Region and then use NetApp SnapMirror to restore the data from the primary Region.

The other options are not correct because they do not meet the requirements or follow best practices. Using Amazon S3 for the application storage is not a good option because S3 is an object storage service that does not support SMB or NFS protocols natively. The company would need to use additional services or software to mount S3 buckets as file systems, which would add complexity and cost. Using Amazon EBS for the application storage is also not a good option because EBS is a block storage service that does not support SMB or NFS protocols natively. The company would need to set up and manage file servers on EC2 instances to provide shared access to the EBS volumes, which would add overhead and maintenance. Using a Volume Gateway in AWS Storage Gateway for the application storage is not a valid option because Volume Gateway does not support SMB protocol. Volume Gateway only supports iSCSI protocol, which means that only Linux applications can access the shared storage.

1: What is Amazon FSx for NetApp ONTAP? - FSx for ONTAP

2: Amazon FSx for NetApp ONTAP

3: Amazon FSx for NetApp ONTAP | NetApp

4: AWS Announces General Availability of Amazon FSx for NetApp ONTAP

Replicating Data with NetApp SnapMirror - FSx for ONTAP

What Is Amazon S3? - Amazon Simple Storage Service

What Is Amazon Elastic Block Store (Amazon EBS)? - Amazon Elastic Compute Cloud

What Is AWS Storage Gateway? - AWS Storage Gateway

Installing the CloudWatch agent and instrumenting the application to push custom metrics to the agent is the easiest and lowest overhead method.

Prometheus (B) adds operational complexity.

Lambda polling (C) introduces unnecessary complexity and latency.

Using Logs Insights (D) requires extracting metrics from logs, which is less efficient.

Comprehensive and Detailed Explanation From Exact Extract:

AWS CodeDeploy supports automatic rollback capabilities, which allow the deployment to automatically revert to the last known good revision if a failure occurs during the deployment or if health checks fail.

You can enable automatic rollback on CodeDeploy deployments by configuring rollback settings in the deployment group.

Automatic rollback triggers can include failed deployments and alarms failing during the deployment lifecycle, which means if the health check fails, CodeDeploy will automatically roll back without manual intervention.

Lifecycle event hooks (Option A) provide custom scripting capabilities during deployment but do not provide built-in rollback automation.

CloudFormation (Option B) can deploy and manage infrastructure but does not control CodeDeploy rollback.

CloudWatch alarms (Option C) can trigger notifications but require manual or additional automation to trigger rollback.Hence, enabling CodeDeploy’s automatic rollback settings is the simplest and most reliable method for automatic rollback upon health check failure.

Reference from AWS Official Documentation and Study Guide:

AWS CodeDeploy Automatic Rollback:"You can configure automatic rollback in AWS CodeDeploy to roll back a deployment if it fails or if specified CloudWatch alarms are triggered."(AWS CodeDeploy User Guide - Automatic Rollbacks)

AWS Certified DevOps Engineer Professional Study Guide:"Leverage CodeDeploy automatic rollback features to reduce downtime and ensure application stability during deployments."