AWS Solutions Architect Professional (SAP-01)- Quiz 1

Q1.
A company wants to run an application on AWS. The company plans to provision its application in Docker containers running in an Amazon ECS cluster. The application requires a MySQL database and the company plans to use Amazon RDS. What is the MOST cost-effective solution to meet these requirements?

Create an ECS cluster using a fleet of Spot Instances with Spot Instance draining enabled. Provision of the database using On-Demand Instances.

Create an ECS cluster using On-Demand Instances. Provision of the database using On-Demand Instances.

Create an ECS cluster using a fleet of Spot Instances, with Spot Instance draining enabled. Provision the database using Reserved Instances.

Create an ECS cluster using On-Demand Instances. Provision the database using Spot Instances.

WHY A IS False?	CONCEPT: On-Demand Instances & Spot Instances	On-Demand Instances have the highest cost but no upfront payment. no long-term commitment. Spot Instances Can get a discount of up to 90% compared to On-demand. Instances that you can “lose” at any point in time if your max price is less than the current spot price. MOST cost-efficient instances in AWS Here, the question specifically asks for a MOST cost-effective solution. So, provisioning the database using On-demand Instances is not definitely the correct option.
WHY B IS False?	CONCEPT: On-Demand Instances	On-Demand Instances have the highest cost but no upfront payment. no long-term commitment. Here, the question specifically asks for a MOST cost-effective solution. So, definitely not On-demand Instances.
WHY C IS True?	CONCEPT: Spot Instances & Reserved Instances	Reserved instances Reserve a specific instance type. Up to 72% discount compared to On-demand. Recommended for steady-state usage applications (like a database) Spot Instances Can get a discount of up to 90% compared to On-demand. Instances that you can “lose” at any point in time if your max price is less than the current spot price. MOST cost-efficient instances in AWS
WHY D IS False?	CONCEPT: On-Demand Instances & Spot Instances	On-Demand Instances have the highest cost but no upfront payment. no long-term commitment. Spot Instances Can get a discount of up to 90% compared to On-demand. Instances that you can “lose” at any point in time if your max price is less than the current spot price. MOST cost-efficient instances in AWS Here, the question specifically asks for a MOST cost-effective solution. So, provisioning the ECS cluster using On-demand Instances is not definitely the correct option.
Short Trick	MOST cost-effective solution - Out of On-demand, Reserved & Spot, Spot Instances are the most cost-effective instances in AWS.
References:	REFERNCED DOCS