A company is using EC2 instances on non-production environment and processing non-priority batch loads, which can be interrupted at any time.

What is the best instance purchasing option which can be applied to the EC2 instances in this case?

• On-Demand Instances

• Spot Instances

• Reserved Instances

• Compute Savings Plan

A company needs to use Amazon S3 to store financial documents. For their quarterly reporting, the files are required to be retrieved after a period of 3 months.

What will you do to satisfy this requirement in a cost-effective way?

• Use Amazon Glacier Deep Archive

• Use Amazon S3 -Intelligent Tiering

• Use Amazon S3 Standard – Infrequent Access

• Use Amazon S3 Standard

A company plans to set up a cloud infrastructure in AWS. In the planning, it was discussed that you need to deploy two EC2 instances that should continuously run for three years. The CPU utilization of the EC2 instances is also expected to be stable and predictable.

Which is the most cost-efficient Amazon EC2 Pricing type that is most appropriate for this scenario?

• Savings Plan

• Dedicated Hosts

• On-Demand instances

• Spot instances

A FinTech company has been running its compute workload on the AWS Cloud. In order to quickly release the application, the developers have deployed several Amazon EC2 instances, Auto Scaling groups and AWS Lambda functions for the different components of the application stack. After a few weeks of operation, the Financial team would like to know if we can optimize costs for the application

Which of the following actions should be taken to verify and resolve the above issue?

• Use AWS Cost Explorer to gather cost information on all compute-related resources. Increase the size of the instances based on how much budget is allowed by the company.

• Use AWS CloudTrail to view performance metrics of the compute resources. Create a CloudTrail dashboard to identify overutilized or underutilized resources.

• Use AWS CloudWatch to view performance metrics of the compute resources. Create a CloudWatch dashboard to identify overutilized or underutilized resources.

• Enable AWS Compute Optimizer to see recommendations on optimal sizing of compute-related resources. Implement changes based on the recommendations.

A tech company is running two production web servers hosted on EC2 instances with Savings Plan for 1 year. These instances have a consistent CPU load of 90%. Traffic is being distributed to these instances by an Application Load Balancer. In addition, they also have Multi-AZ RDS MySQL databases for their production, test, and development environments.

What recommendation would you make to reduce cost in this AWS environment without affecting availability and performance of mission-critical systems? Choose the best answer.

• Consider using Spot instances

• Consider not using a Multi-AZ RDS deployment for the development and test database

• Consider using Dynamo instead of RDS MySQL

• Consider removing the Elastic Load Balancer