CLF-C02 Cloud Concepts practice questions

Cloud Concepts is 24% of the AWS Certified Cloud Practitioner (CLF-C02) exam, the third-heaviest of its 4 domains: roughly 12 of the 50 scored questions, and every 10% of accuracy here moves your scaled score about 24 points. Below are 6 free questions from this domain only, each with the answer explained and why every wrong option misses. Last updated 2026-07-19.

Every question is verified against official AWS documentation, linked below each answer.

  1. Question 1Cloud Concepts

    A company's data platform team explains that their system can add many more database read replicas over the next year to support permanent growth in the user base, but that this expansion is planned and carried out manually rather than happening automatically within minutes. Which term best describes this characteristic?

    Reveal answer & explanation

    Answer: A. Scalability

    Scalability is the broader capacity of a system to grow (or shrink) to meet demand over time; it can be planned and executed manually, as in this scenario of adding replicas over a year for permanent growth.

    Go deeper: What's the key difference between scaling that happens automatically and scaling that's planned out manually? Why doesn't a year-long, manually-executed expansion count as elasticity?

    Source: official AWS documentation · verified 2026-07-19

  2. Question 2Cloud Concepts

    An e-commerce company's engineering team has historically had to predict server demand months in advance for the holiday shopping season, often over-provisioning and wasting money, or under-provisioning and causing outages. Which cloud benefit directly solves this problem?

    Reveal answer & explanation

    Answer: C. Stop guessing capacity

    Cloud computing lets you access as much or as little capacity as you need and scale up or down with only minutes' notice, eliminating the need to guess infrastructure capacity in advance, which is exactly the problem described.

    Go deeper: How does being able to provision capacity within minutes remove the need to forecast demand months out? Why is this benefit about avoiding guesswork rather than about the CapEx-to-OpEx shift?

    Source: official AWS documentation · verified 2026-07-19

  3. Question 3Cloud Concepts

    A photo-sharing application experiences a sudden tenfold spike in traffic when a post goes viral, then returns to normal traffic levels a few hours later. The application's infrastructure automatically adds compute capacity during the spike and automatically removes the extra capacity afterward. Which cloud characteristic does this describe?

    Reveal answer & explanation

    Answer: D. Elasticity

    Elasticity is the ability of a system to automatically grow and shrink capacity in near real time to match changing demand, exactly as shown by the automatic add-and-remove behavior in this scenario.

    Go deeper: What makes this scenario different from plain scalability, which also involves adding capacity? Why does 'automatically removes the extra capacity afterward' matter for identifying elasticity?

    Source: official AWS documentation · verified 2026-07-19

  4. Question 4Cloud Concepts

    A marketing team wants to test a new promotional website and, thanks to AWS, can provision the needed servers within minutes instead of submitting a hardware purchase request that used to take weeks under the old on-premises process. Which cloud benefit does this scenario best illustrate?

    Reveal answer & explanation

    Answer: B. Increased speed and agility

    In a cloud computing environment, new IT resources are only a click away, reducing the time to make resources available from weeks to minutes, which increases organizational agility and the ability to experiment quickly and cheaply - exactly what the marketing team experiences.

    Go deeper: How does cutting provisioning time from weeks to minutes change what a team is willing to try? Why isn't this scenario about AWS's lower per-unit pricing?

    Source: official AWS documentation · verified 2026-07-19

  5. Question 5Cloud Concepts

    A developer wants to run backend code that responds to events without provisioning, patching, or managing any servers, and wants to pay only for the compute time actually used while the code is running. Which cloud computing concept does this describe?

    Reveal answer & explanation

    Answer: C. Serverless computing

    Serverless computing lets you run code without provisioning or managing servers, with the underlying provider handling scaling and availability, and you pay only for the compute time you actually consume, with no charge when code is not running - matching the developer's requirements exactly.

    Go deeper: What does 'no charge when code isn't running' tell you about how this billing model works? Why doesn't a Reserved Instance commitment fit an event-driven workload like this?

    Source: official AWS documentation · verified 2026-07-19

  6. Question 6Cloud Concepts

    A startup founder wants to launch a new mobile app but does not want to spend a large amount of money upfront purchasing physical servers before knowing whether the app will succeed. Which AWS Cloud benefit addresses this concern?

    Reveal answer & explanation

    Answer: A. Trading capital expense for variable expense

    A core AWS Cloud value proposition is trading upfront capital expenditure - buying servers and data centers before you know your needs - for variable operating expenditure, where you pay only for what you consume. This directly matches the founder's concern about large upfront spending.

    Go deeper: Why does paying only for what you use reduce the risk of launching an unproven idea? How is trading CapEx for OpEx different from economies of scale?

    Source: official AWS documentation · verified 2026-07-19

More CLF-C02 practice