CLF-C02 Online Practice Questions and Answers

Correct Answer: AE

The statements that represent the cost-effectiveness of the AWS Cloud are: Users can trade fixed expenses for variable expenses. By using the AWS Cloud, users can pay only for the resources they use, instead of investing in fixed and upfront costs for hardware and software. This can lower the total cost of ownership and increase the return on investment. Users benefit from economies of scale. By using the AWS Cloud, users can leverage the massive scale and efficiency of AWS to access lower prices and higher performance. AWS passes the cost savings to the users through price reductions and innovations. AWS Cloud Value Framework

Correct Answer: A

Pay-as-you-go pricing is one of the main benefits of AWS. With pay-as-you- go pricing, you pay only for what you use, when you use it. There are no long-term contracts, termination fees, or complex licensing. You replace upfront expenses with lower variable costs and pay only for the resources you consume.

Correct Answer: AC

To meet the goals for sustainability impact, the company should follow the best practices of scaling infrastructure with user load and eliminating creation and maintenance of unused assets. Scaling infrastructure with user load means adjusting the capacity of the infrastructure to match the demand of the users, which can reduce the energy consumption and carbon footprint of the system. Eliminating creation and maintenance of unused assets means avoiding the waste of resources and money on assets that are not needed or used, which can also improve the environmental and economic efficiency of the system3.

Correct Answer: B

Refining operation procedures frequently is one of the design principles of the operational excellence pillar of the AWS Well-Architected Framework. It means that you should review and validate your processes regularly to ensure they are effective and that staff are familiar with them. Performing operations as code, making frequent, small, reversible changes, and structuring the company to support business outcomes are design principles of other pillars of the AWS Well-Architected Framework.

Correct Answer: A

Amazon S3 Glacier Deep Archive is the lowest-cost storage class in the cloud. It is designed for long-term data archiving that is rarely accessed. It offers a retrieval time of 12 hours and a durability of 99.999999999% (11 9's). It is ideal for data that must be retained for 7 years or longer to meet regulatory compliance requirements.

Correct Answer: C

Correct Answer: DE

Correct Answer: C

Explanation: AWS Local Zones are a type of AWS infrastructure deployment that place compute, storage, database, and other select services closer to large population, industry, and IT centers, enabling you to deliver applications that require single-digit millisecond latency to end-users.

Correct Answer: D

Correct Answer: CD

Explanation: 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. *Savings Plans ?Reduce your Amazon EC2 costs by making a commitment to a consistent amount of usage, in USD per hour, for a term of 1 or 3 years.

*Reserved Instances ?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.

*Spot Instances ?Request unused EC2 instances, which can reduce your Amazon EC2 costs significantly.

*Dedicated Hosts ?Pay for a physical host that is fully dedicated to running your instances, and bring your existing per-socket, per-core, or per-VM software licenses to reduce costs. *Dedicated Instances ?Pay, by the hour, for instances that

run on single-tenant hardware. *Capacity Reservations ?Reserve capacity for your EC2 instances in a specific Availability Zone for any duration. If you require a capacity reservation, purchase Reserved Instances or Capacity Reservations for

a specific Availability Zone. Spot Instances are a cost-effective choice if you can be flexible about when your applications run and if they can be interrupted. Dedicated Hosts or Dedicated Instances can help you address compliance

requirements and reduce costs by using your existing server-bound software licenses.