Exam AWS Certified Cloud Practitioner topic 1 question 342 discussion

For anyone who is confusing why the answer is B, please consider this 1.Fault-tolerant workloads: The workloads running on Amazon EC2 instances are designed to withstand failures or outages without causing significant disruption to the system or application. They are resilient to potential failures. 2.Perform periodic checkpoints: The workloads have a mechanism in place to periodically save or checkpoint their state or data. This ensures that in the event of a failure or outage, the workload can recover from the most recent checkpoint, minimizing data loss or downtime. so this mean our instance can be interrupted, so the answer is B.

Spot Instances allow you to request spare Amazon EC2 instances at a significantly reduced cost compared to On-Demand instances. However, there's a catch: Spot Instances can be interrupted if the capacity you requested becomes unavailable or if the Spot price exceeds your bid price. This makes Spot Instances suitable for fault-tolerant workloads that can handle interruptions by utilizing checkpoints and state-saving mechanisms, as mentioned in the scenario. By using Spot Instances, you can achieve the greatest cost savings, but it's important to be prepared for possible instance interruptions and design your application to work well with such interruptions.

C. Spot Instances "Amazon EC2 Spot Instances let you take advantage of unused EC2 capacity in the AWS cloud. Spot Instances are available at up to a 90% discount compared to On-Demand prices. You can use Spot Instances for various stateless, fault-tolerant, or flexible applications such as big data, containerized workloads, CI/CD, web servers, high-performance computing (HPC), and test & development workloads." https://aws.amazon.com/ec2/spot/

Keyword here is "Fault tolerant workload" - so most cost effective option is EC2 Spot Instance

This question is incredibly unclear. It needs to specify if the additional instances should be always available or simply, cheapest.

But I see if they bought spot instances already this would be the way to go

It states the company is already using fault-tolerant on aws why would they want more. The answer is a

C is the answer. Spot instances can provides the greatest cost saves compare to other services.

C is the answer.

C. Spot Instances Spot Instances is an AWS pricing model that enables customers to bid on spare Amazon EC2 capacity and potentially save up to 90% on the cost of running their workloads. Spot Instances are ideal for workloads that can be interrupted, such as big data, containers, CI/CD, and batch processing. These workloads can take advantage of the low cost and high availability of Spot Instances. Capacity Reservations is a feature that allows you to reserve capacity for your Amazon EC2 instances, which may reduce the costs associated with running those instances, but it's not as cost-effective as Spot Instances. Amazon Lightsail is a service that simplifies web hosting and management of web applications, but it may not be a good fit for the company's workloads. Dedicated Hosts is a service that allows you to run Amazon EC2 instances on dedicated physical servers, which can be useful in certain compliance scenarios but it will not provide the greatest cost savings.

Vote for C

#7 Use Amazon EC2 Spot Instances to reduce EC2 costs If your workload is fault-tolerant, use Spot instances to reduce costs by up to 90%. Typical workload examples include big data, containerized workloads, CI/CD, web servers, high-performance computing (HPC), and other test & development workloads. Using EC2 Auto Scaling you can launch both On-Demand and Spot instances to meet a target capacity. Auto Scaling automatically takes care of requesting for Spot instances and attempts to maintain the target capacity even if your Spot instances are interrupted

it's C

I definitely think it's C

it should be spot - "fault-tolerant workloads"

Vote for option C because the company supports fault-tolerant applications.

Option C, seems the best option, because the question states that the company is already running fault tolerant applications, So spot instances are suitable for this requierment.