Attached is a screenshot of a question from the exam and the statistics for it. Please tell us the cost difference of using a Reserved Instance EC2 on AWS for 1 year with Barracuda's Cloudgen firewall vs buying a Barracuda rack-mounted appliance. For those unfamiliar with AWS, you can find this device on the AWS Marketplace. Also, explain some reasons why you might choose one solution or the other.

What is the most cost-effective option to purchase an EC2 Reserved Instance (RI)?

A research group wants to provision an Amazon EC2 instance for a flexible application that can be interrupted. As a Cloud Practitioner, which option would you recommend as the MOST cost-optimal option?Question 42Answera.Dedicated Hostb.On-Demand Instancec.Spot Instanced.Reserved Instance (RI)

A company would like to reserve Amazon Elastic Compute Cloud (Amazon EC2) compute capacity for three years to reduce costs. The company also plans to increase their workloads during this period. As a Cloud Practitioner, which Amazon Elastic Compute Cloud (Amazon EC2) reserved instance (RI) type would you recommend?Question 27Answera.Convertible reserved instance (RI)b.Standard reserved instance (RI)c.Scheduled reserved instance (RI)d.Adaptable reserved instances (RI)

What is the most cost-effective option to purchase an EC2 Reserved Instance (RI)?Question 38Answera.All upfront payment option with the standard 1-year termb.No upfront payment option with standard 1-year termc.No upfront payment option with standard 3-years termd.Partial upfront payment option with standard 3-years term

Reserved Instance (RI) pricing is available for which of the following AWS services? (Select two)Question 15AnswerA.AWS Identity and Access Management (AWS IAM)B.Amazon Elastic Compute Cloud (Amazon EC2)C.Amazon Simple Storage Service (Amazon S3)D.Amazon CloudFrontE.Amazon Relational Database Service (Amazon RDS)