SOA-C02 Exam Dumps - Amazon Web Services AWS Certified Associate Questions and Answers

To reduce the time required for new instances to become available in an Auto Scaling group, pre-installing the necessary software in the AMI used by the Auto Scaling group is the most effective solution.

Use EC2 Image Builder:

Utilize EC2 Image Builder to create a custom AMI that includes all the required software and configurations.

This reduces the setup time during instance launch, as the user data script will no longer need to install the software.

To view a list of security groups that are open to the internet on port 3389, the most appropriate tool is AWS Trusted Advisor.

AWS Trusted Advisor:

AWS Trusted Advisor provides real-time guidance to help you provision your resources following AWS best practices.

It includes a security check that identifies security groups with unrestricted access.

Using Trusted Advisor:

Go to the AWS Trusted Advisor console.

In the "Security" category, look for the check that identifies security groups with unrestricted access.

Review the report to find security groups that allow unrestricted access on port 3389 (RDP).

AWS Trusted Advisor

AWS Trusted Advisor Best Practices

To handle the increased message load with minimal operational effort, implementing an Amazon Simple Queue Service (SQS) queue between the frontend and backend is an ideal solution. SQS decouples the frontend and backend by queuing messages, enabling the backend to process messages at its own pace without losing any.

SQS Queue: Acts as a buffer, ensuring messages are not lost if the backend application cannot immediately process them.

Decoupling: With SQS, the frontend can continue sending messages without concern for the backend's processing speed, providing a scalable solution with minimal management requirements.

Low Operational Overhead: SQS is fully managed, reducing the need for infrastructure management.

The most operationally efficient way to capture DHCP log files on 50 of the 100 EC2 instances is to create an additional CloudWatch agent configuration file and use AWS Systems Manager Run Command to update the CloudWatch agent configuration.

Create an Additional CloudWatch Agent Configuration File:

Create a new CloudWatch agent configuration file that includes the settings to capture DHCP log files.

Use AWS Systems Manager Run Command:

AWS Systems Manager Run Command allows you to remotely and securely manage the configuration of your managed instances.

Use the Run Command to restart the CloudWatch agent on each EC2 instance with the append-config option to apply the additional configuration file.

Steps:

Open the Systems Manager console.

Choose "Run Command."

Create a new command document or use an existing one that restarts the CloudWatch agent with the append-config option.

Target the 50 specific EC2 instances.

Amazon CloudWatch Agent Configuration

AWS Systems Manager Run Command

To address the issue of a fully utilized EBS volume causing application errors, the most efficient solution is to dynamically resize the existing EBS volume and extend the file system. AWS EBS supports Elastic Volumes, allowing you to increase volume size without detaching or stopping the instance.

Steps:

Modify the EBS Volume:

Navigate to the Amazon EC2 console.

Select the EBS volume attached to the instance.

Choose "Modify Volume" and increase the size as needed.

Confirm the modification.

Extend the File System:

Connect to the EC2 instance.

Use the lsblk command to identify the volume and partition.

If necessary, use the growpart command to extend the partition.

Depending on the file system:

For XFS: sudo xfs_growfs -d /mount-point

For ext4: sudo resize2fs /dev/xvda1

This approach minimizes downtime and avoids the need for creating new volumes or stopping the instance.

To allow CloudFormation templates in all accounts within the organization to reference the latest AMI ID:

Parameter Store in Standard Tier: Storing the AMI ID in Systems Manager Parameter Store provides a central and easy-to-update source.

Enable Resource Sharing with Organizations: This allows the parameter to be shared across accounts in the organization.

Resource Share in AWS RAM: AWS Resource Access Manager (RAM) can be used to share the parameter with the entire organization, allowing other accounts to access the AMI ID.

Using the standard tier in Parameter Store is sufficient, and an EventBridge rule with Lambda for updating AMIs would add unnecessary complexity.

To find security groups that are open to the internet on port 3389, using AWS Trusted Advisor is the most straightforward solution.

AWS Trusted Advisor:

AWS Trusted Advisor provides real-time guidance to help you provision your resources following AWS best practices.

It includes a security check that identifies security groups with unrestricted access.

Steps to Use Trusted Advisor:

Open the AWS Trusted Advisor console.

In the "Security" category, look for the check that identifies security groups with unrestricted access.

Review the report to find security groups that allow unrestricted access on port 3389 (RDP).

AWS Trusted Advisor

AWS Trusted Advisor Best Practices

To improve RDS performance during peak traffic when resources are over-utilized due to read traffic, the SysOps administrator can take the following actions:

Add a Read Replica:

Amazon RDS Read Replicas provide enhanced performance and durability for database instances.

By creating a read replica, you can offload read traffic from the primary database instance to the replica.

This reduces the load on the primary instance and improves overall performance.

Amazon RDS Read Replicas

Modify the Application to Use Amazon ElastiCache for Memcached:

Amazon ElastiCache is a web service that makes it easy to deploy, operate, and scale an in-memory cache in the cloud.

By using ElastiCache for Memcached, you can cache frequently accessed data, reducing the number of read requests to the RDS instance.

This can significantly improve the performance of the database during peak traffic.

To design a high-traffic static website that is highly available and provides low latency globally, you can use Amazon S3, CloudFront, and Route 53. This solution leverages the global edge locations of CloudFront to deliver content with low latency.

Create an Amazon S3 Bucket:

Open the S3 console at Amazon S3 Console.

Create a new bucket and upload your website content.

Configure S3 for Static Website Hosting:

Go to the Properties tab of your bucket.

Enable Static website hosting and set the index document (e.g., index.html).

Create a CloudFront Distribution:

Open the CloudFront console at Amazon CloudFront Console.

Create a new distribution and set the S3 bucket as the origin.

Configure distribution settings, including caching behaviors and SSL/TLS settings.

Create Route 53 Alias Record:

Open the Route 53 console at Amazon Route 53 Console.

Select the hosted zone for your domain.

Create a new record set, choose ALIAS as the record type, and point it to the CloudFront distribution.

Amazon S3 Static Website Hosting

Creating a CloudFront Distribution

Routing Traffic to a CloudFront Distribution

To retain application logs after instances are terminated, configure the EC2 instances to send logs to Amazon CloudWatch Logs.

Steps:

Create a New AMI:

Create a new AMI that includes the Amazon CloudWatch agent.

Install and configure the CloudWatch agent to send logs to CloudWatch Logs.