Objective 4.1CLF-C02

4.1 Compare AWS pricing models.

Objective 4.1 sits in Billing, Pricing, and Support, which carries 12% of the Cloud Practitioner exam. The questions below are original, written from the official objective title above, and each explanation cites the Amazon Web Services (AWS) page it rests on.

Objective title verbatim from the official objectives. Amazon Web Services (AWS) exam page

A worked example

Shown solved, with the whole explanation open: this is what every question here carries.

4-1Billing, Pricing, and SupportModerate

A nightly data analysis job can be stopped and restarted at any time. The team wants the lowest EC2 price available. Which purchase option fits?

On-Demand InstancesOn-Demand charges the full published rate. It is the right answer when the work cannot survive being interrupted.
Reserved InstancesA Reserved Instance discounts matched usage in return for a one or three year term, which a nightly job does not need.
Spot InstancesCorrect · your answerCorrect. Interruptible work is the case this option exists for.
Dedicated HostsA Dedicated Host allocates a physical server to you, usually to satisfy licensing rules, and it costs more rather than less.

Correct.

Concept

Price tracks the guarantee attached to capacity. Work that can be paused and resumed does not need a guarantee, so it can run on capacity the provider is willing to take back.

Why C

Spare capacity is offered well under the standard rate, and the trade is that the instance can be reclaimed. Batch analysis that restarts cleanly loses nothing when that happens.

Source

#ec2-pricing#spot-instances#cost-optimization

Now you: objective 4.1 questions

No account needed. The explanation opens when you answer.

Sample question 1 of 3

4-1Billing, Pricing, and SupportModerate

A pilot application runs for six weeks with unpredictable hours and cannot tolerate interruption. Which purchase option should the team choose?

Sample question 2 of 3

4-1Billing, Pricing, and SupportModerate

A company will commit to a steady hourly spend, but wants the discount to follow workloads as they move between instance families, Regions and Lambda. Which option?

Sample question 3 of 3

4-1Billing, Pricing, and SupportHard

A team buys a Reserved Instance and then cannot find the reserved server anywhere in the console. What did the purchase actually buy?

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Read the sources

These are the official pages the questions above cite. Reading them is studying the objective from the primary source, which is what the explanations point you toward anyway.

More objectives in Billing, Pricing, and Support