AWS Certified Cloud Practitioner
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A company needs to use Amazon EC2 instances to conduct quality assurance tests. The EC2 instances must run continuously without interruption for 1 month. After 1 month, the company will not need the EC2 instances anymore.
Which EC2 instance purchasing option will meet these requirements most cost-effectively?
Real Exam
Community
RRitesh
A
Dedicated Hosts
B
On-Demand Instances
C
Reserved Instances
D
Spot Instances
Explanation:
Explanation
On-Demand Instances are the most cost-effective choice for this scenario because:
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Short-term usage: The instances are only needed for exactly 1 month with no long-term requirement
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No upfront commitment: On-Demand instances don't require any upfront payment or long-term contract
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Continuous availability: Unlike Spot Instances, On-Demand instances won't be interrupted
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Cost comparison:
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Reserved Instances require 1-3 year commitments and upfront payments, which are not cost-effective for just 1 month
-
Dedicated Hosts are physical servers dedicated to your use, typically more expensive and require longer commitments
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Spot Instances are cheaper but can be interrupted with little notice, making them unsuitable for continuous quality assurance tests
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For short-term, predictable workloads where continuous availability is required, On-Demand instances provide the best balance of cost and reliability without long-term commitments.
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