AWS Certified Solutions Architect Associate · Free Practice Question Medium
Question 8
A financial services company is looking to move its on-premises IT infrastructure to AWS Cloud. The company has multiple long-term server bound licenses across the application stack and the CTO wants to continue to utilize those licenses while moving to AWS.
As a solutions architect, which of the following would you recommend as the MOST cost-effective solution?
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A
Use Amazon EC2 reserved instances (RI)
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B
Use Amazon EC2 dedicated instances
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C
Use Amazon EC2 dedicated hosts
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D
Use Amazon EC2 on-demand instances
Reveal correct answer
Correct answer: C
Explanation
Correct option:
Use Amazon EC2 dedicated hosts
You can use Dedicated Hosts to launch Amazon EC2 instances on physical servers that are dedicated for your use. Dedicated Hosts give you additional visibility and control over how instances are placed on a physical server, and you can reliably use the same physical server over time. As a result, Dedicated Hosts enable you to use your existing server-bound software licenses like Windows Server and address corporate compliance and regulatory requirements.
Incorrect options:
Use Amazon EC2 dedicated instances - Dedicated instances are Amazon EC2 instances that run in a VPC on hardware that's dedicated to a single customer. Your dedicated instances are physically isolated at the host hardware level from instances that belong to other AWS accounts. Dedicated instances may share hardware with other instances from the same AWS account that are not dedicated instances. Dedicated instances cannot be used for existing server-bound software licenses.
Use Amazon EC2 on-demand instances
Use Amazon EC2 reserved instances (RI)
Amazon EC2 presents a virtual computing environment, allowing you to use web service interfaces to launch instances with a variety of operating systems, load them with your custom application environment, manage your network’s access permissions, and run your image using as many or few systems as you desire.
Amazon EC2 provides the following purchasing options to enable you to optimize your costs based on your needs:
On-Demand Instances – Pay, by the second, for the instances that you launch.
Reserved Instances (RI) – Reduce your Amazon EC2 costs by making a commitment to a consistent instance configuration, including instance type and Region, for a term of 1 or 3 years.
Neither on-demand instances nor reserved instances can be used for existing server-bound software licenses.
References:
https://aws.amazon.com/ec2/dedicated-hosts/
Discussion
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