Which of the following is an INCORRECT statement about Scaling, a design principle of Reliability pillar of the AWS Well-Architected Framework?Question 11Answera.A scale out operation implies you scale by adding more instances to your existing pool of resourcesb.A scale up operation implies you scale by adding more power (CPU, RAM) to your existing machine/nodec.Fault tolerance is achieved by a scale out operationd.Fault tolerance is achieved by a scale up operation
Question
Which of the following is an INCORRECT statement about Scaling, a design principle of Reliability pillar of the AWS Well-Architected Framework?Question 11Answera.A scale out operation implies you scale by adding more instances to your existing pool of resourcesb.A scale up operation implies you scale by adding more power (CPU, RAM) to your existing machine/nodec.Fault tolerance is achieved by a scale out operationd.Fault tolerance is achieved by a scale up operation
Solution
The incorrect statement about Scaling, a design principle of the Reliability pillar of the AWS Well-Architected Framework is:
d. Fault tolerance is achieved by a scale up operation
Explanation:
Fault tolerance is not achieved by a scale up operation. Instead, it is achieved by a scale out operation. Scaling up (vertical scaling) involves adding more power to an existing machine, but it does not increase the system's fault tolerance. If the single, more powerful machine fails, the system fails. On the other hand, scaling out (horizontal scaling) involves adding more instances to the existing pool of resources. This increases the system's fault tolerance because if one instance fails, others can take over.
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Which of the following is an INCORRECT statement about Scaling, a design principle of Reliability pillar of the AWS Well-Architected Framework?
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