Cloud Concepts Fundamentals — CLF-C02 practice questions

Practice questions for this topic, with explained answers.

Domain: Cloud Concepts ·100 questions · 30 easy · 40 intermediate · 30 hard · page 6 of 7

Question 76 clf-cloud-concepts-fundamentals-076

Easy · Choose one

Which of the six advantages of cloud computing describes paying only when computing resources are consumed, instead of investing heavily in data centers and servers before you know how you will use them?

  1. a Go global in minutes
  2. b Increase speed and agility
  3. c Trade fixed expense for variable expense
  4. d Stop guessing capacity
Show answer & explanation

Answer: C

Why C is correct

AWS words this advantage as "trade fixed expense for variable expense." The fixed expense is the up-front purchase of data centers and servers that must be made before demand is known; the variable expense is a charge that accrues only while resources run, and only in proportion to how much is consumed.

Why the others are wrong

  • A — Go global in minutes concerns deploying into Regions worldwide to lower latency, which is a reach benefit rather than a spending model.
  • B — Increase speed and agility concerns the drop in time to make resources available to developers, from weeks to minutes.
  • D — Stop guessing capacity concerns removing the need to forecast infrastructure size in advance. It is closely related but describes provisioning rather than how the expense is incurred.

Last verified: 2026-08-26

Question 77 clf-cloud-concepts-fundamentals-077

Easy · Choose one

A fixed-cost (capital expenditure) model and a variable-cost (operating expenditure) model differ in which fundamental way?

  1. a CapEx is paid annually and OpEx is paid monthly, but both purchase the same assets
  2. b CapEx is used by small businesses and OpEx is used by enterprises
  3. c CapEx is an up-front purchase of assets that will be used over time, while OpEx is an ongoing charge for consuming a service
  4. d CapEx applies only to hardware and OpEx applies only to software
Show answer & explanation

Answer: C

Why C is correct

A capital expenditure buys an asset up front, before the benefit is realized, and that asset is then owned and depreciated over its useful life. An operating expenditure is incurred as the service is consumed. Moving to the cloud shifts spending from the first pattern to the second, which is what AWS means by trading fixed expense for variable expense.

Why the others are wrong

  • A — The distinction is about ownership and timing relative to use, not about the billing interval. An annually invoiced subscription is still operating expenditure.
  • B — Organizations of every size use both. The choice is driven by what is being acquired, not by company size.
  • D — Both categories can contain hardware and software. A perpetual software license bought outright is capital spending; a subscription is operating spending.

Last verified: 2026-08-26

Question 78 clf-cloud-concepts-fundamentals-078

Easy · Choose one

AWS states that because usage from hundreds of thousands of customers is aggregated in the cloud, providers can achieve a lower variable cost than an individual customer could achieve alone. Which concept does this describe?

  1. a Bring your own license
  2. b Total cost of ownership
  3. c Rightsizing
  4. d Massive economies of scale
Show answer & explanation

Answer: D

Why D is correct

This is AWS's "benefit from massive economies of scale" advantage. Because demand from a very large customer base is pooled, AWS buys, builds, and operates at a scale no single customer can match, and passes the resulting efficiency on as lower pay-as-you-go prices. AWS has reduced prices many times over the life of the platform as a result.

Why the others are wrong

  • A — Bring your own license is a licensing arrangement in which the customer applies existing software licenses to cloud resources.
  • B — Total cost of ownership is a comparison method that accounts for all direct and indirect costs of an option over time.
  • C — Rightsizing is matching the size of a provisioned resource to the workload's actual requirement. It lowers a customer's own bill but does not describe the provider's cost structure.

Last verified: 2026-08-26

Question 79 clf-cloud-concepts-fundamentals-079

Easy · Choose one

What does "rightsizing" mean in the context of cloud economics?

  1. a Selecting the largest available instance type to guarantee headroom
  2. b Committing to a multi-year term in exchange for a discounted rate
  3. c Distributing resources evenly across all Availability Zones in a Region
  4. d Matching the size and type of provisioned resources to the workload's actual requirements
Show answer & explanation

Answer: D

Why D is correct

Rightsizing means analyzing actual utilization and then adjusting the resource so that it fits the workload, which usually means downsizing or terminating instances that are consistently underused. It attacks waste directly, because an oversized instance costs the same whether or not the capacity is used.

Why the others are wrong

  • A — Choosing the largest instance for headroom is the opposite of rightsizing and is a common source of overspending.
  • B — A multi-year commitment is a purchasing discount. It lowers the rate but does nothing about an instance that is too large for its job.
  • C — Spreading resources across Availability Zones is a resilience practice. It affects availability, not whether each resource is correctly sized.

Last verified: 2026-08-26

Question 80 clf-cloud-concepts-fundamentals-080

Easy · Choose one

Under a bring your own license (BYOL) model, who supplies the software license used on AWS?

  1. a AWS Support provides a license for the duration of any open case
  2. b The license is waived because the software runs on AWS infrastructure
  3. c The customer applies licenses they already own to the AWS resources
  4. d AWS supplies the license and includes its cost in the hourly rate
Show answer & explanation

Answer: C

Why C is correct

Under BYOL the customer uses software licenses they have already purchased to run that software on AWS. The alternative is a license-included model, in which AWS holds the license and its cost is bundled into the service rate, so the customer buys nothing separately from the vendor.

Why the others are wrong

  • A — AWS Support provides technical guidance and case handling. It does not grant third-party software licenses.
  • B — Licensing obligations do not disappear in the cloud. Vendor terms continue to apply and some require specific tenancy arrangements.
  • D — That describes license-included, which is the opposite arrangement.

Last verified: 2026-08-26

Question 81 clf-cloud-concepts-fundamentals-081

Easy · Choose one

Which of the following is a cost of running an on-premises data center that a company no longer pays directly once its server workloads run in an AWS Region?

  1. a End-user laptop purchases
  2. b Application developer salaries
  3. c Facility power, cooling, and physical floor space for the servers
  4. d Corporate insurance premiums
Show answer & explanation

Answer: C

Why C is correct

Data center and facilities costs, which include space, cooling, power, racks, uninterruptible power supplies, cabling, and physical security systems, are borne by AWS once the workload runs in an AWS Region. Companies frequently overlook these when comparing costs because they are often carried in a facilities budget rather than an IT budget.

Why the others are wrong

  • A — End-user devices remain the company's responsibility regardless of where its server workloads run.
  • B — Developers are still needed to build and maintain the application. Migration changes where the workload runs, not who writes it.
  • D — Corporate insurance is a general business expense unrelated to where a workload is hosted.

Last verified: 2026-08-26

Question 82 clf-cloud-concepts-fundamentals-082

Easy · Choose one

What is total cost of ownership (TCO) intended to capture?

  1. a Only the monthly charges billed by a cloud provider
  2. b The full set of direct and indirect costs of an option over its lifetime, so alternatives can be compared fairly
  3. c Only the purchase price of the hardware being compared
  4. d The revenue a workload is expected to generate
Show answer & explanation

Answer: B

Why B is correct

TCO exists because a purchase price is a poor basis for comparison. It adds the costs that accumulate over the life of the option, such as facilities, power and cooling, network links, software licensing, maintenance contracts, and refresh cycles, so that an on-premises option and a cloud option are compared on the same footing.

Why the others are wrong

  • A — Cloud charges alone would ignore the on-premises side of the comparison entirely, which defeats the purpose of a TCO exercise.
  • C — Hardware purchase price is only the first line. It typically understates the true cost by a wide margin once facilities and operations are counted.
  • D — Expected revenue belongs to a return on investment or business case calculation. TCO measures cost, which is one input to that.

Last verified: 2026-08-26

Question 83 clf-cloud-concepts-fundamentals-083

Intermediate · Choose one

A development and test environment is used for roughly eight hours a day on weekdays. Which cloud economics practice most directly reduces its cost?

  1. a Moving the environment to a Region on a different continent
  2. b Enabling versioning on the environment's storage
  3. c Increasing the instance size so that tests complete sooner
  4. d Adopting a consumption model by stopping the resources when they are not in use
Show answer & explanation

Answer: D

Why D is correct

Adopting a consumption model means paying only for the resources you consume and increasing or decreasing usage with business need. AWS uses this exact example: an environment needed 40 hours a week rather than 168 can be stopped when idle, for a potential saving of around 75 percent.

Why the others are wrong

  • A — Prices vary between Regions, but moving a development environment across the world for a small rate difference adds latency for the team and does nothing about the 128 idle hours each week.
  • B — Versioning protects against accidental overwrite and deletion, and it increases storage consumed. It is a data protection feature, not a cost reduction.
  • C — A larger instance costs more per hour. Unless the tests are genuinely compute bound and the environment is then stopped, this usually raises the bill.

Last verified: 2026-08-26

Question 84 clf-cloud-concepts-fundamentals-084

Intermediate · Choose one

A company compares the cost of hosting a workload on premises with the cost of hosting it on AWS, but counts only server hardware on the on-premises side. Why is this comparison misleading?

  1. a Because hardware costs are not tax deductible while cloud charges are
  2. b Because on-premises hosting also incurs facilities, power and cooling, network, software licensing, and hardware refresh costs that the AWS charge already covers or replaces
  3. c Because AWS charges are always higher than hardware costs, so the comparison cannot be fair
  4. d Because AWS prices are fixed for the life of the workload while hardware prices fluctuate
Show answer & explanation

Answer: B

Why B is correct

Server hardware is only one line in the on-premises current operating model. A complete comparison must also include data center and facilities costs such as space, power, cooling, racks and uninterruptible power supplies, network services such as wide area links and VPNs, application and infrastructure software licensing, and the refresh and maintenance cycle for the hardware itself. Omitting them systematically understates the on-premises option.

Why the others are wrong

  • A — Tax treatment differs between capital and operating spending, but that is a separate accounting consideration and not why this comparison is incomplete.
  • C — The outcome depends entirely on the workload and how it is architected. The problem here is the incomplete method, not a predetermined result.
  • D — AWS publishes prices that can and do change, and AWS has reduced prices many times. Price stability is not the flaw in the comparison.

Last verified: 2026-08-26

Question 85 clf-cloud-concepts-fundamentals-085

Intermediate · Choose one

An Amazon EC2 fleet runs consistently at 8 percent CPU and 12 percent memory utilization, and the workload has no seasonal peak. Which action best reflects cloud economics practice?

  1. a Move the fleet to a Region with a lower published price and keep the current sizes
  2. b Add more instances so that utilization per instance falls further
  3. c Rightsize the instances to a smaller type that fits the observed utilization, then consider a commitment
  4. d Purchase a three-year commitment for the current instance size to lower the rate
Show answer & explanation

Answer: C

Why C is correct

Rightsizing comes before commitment. Committing to three years of an oversized instance locks in the waste at a discount, whereas resizing first reduces the baseline and any commitment is then made against what the workload actually needs. Fixing the size and then buying the commitment compounds two savings; doing it in the other order does not.

Why the others are wrong

  • A — A cheaper Region reduces the rate slightly but leaves the fleet oversized, and it may add latency for users and complicate the architecture.
  • B — Adding instances raises cost and lowers utilization further. Utilization is a symptom to fix, not a number to drive down.
  • D — A discount on the wrong size still pays for capacity that is never used, and the commitment makes it harder to correct later.

Last verified: 2026-08-26

Question 86 clf-cloud-concepts-fundamentals-086

Easy · Choose one

Which AWS service analyzes the configuration and utilization metrics of AWS resources and provides rightsizing recommendations along with identification of idle resources?

  1. a AWS CloudFormation
  2. b AWS Service Catalog
  3. c AWS Compute Optimizer
  4. d AWS Config
Show answer & explanation

Answer: C

Why C is correct

AWS Compute Optimizer analyzes resource configuration and utilization metrics and returns rightsizing recommendations, along with identification of idle resources. Its coverage extends across Amazon EC2 instances and Auto Scaling groups, Amazon EBS volumes, AWS Lambda functions, Amazon ECS services on AWS Fargate, and several database and other resource types.

Why the others are wrong

  • A — AWS CloudFormation provisions resources from declarative templates. It creates infrastructure but makes no judgment about whether the sizes chosen are appropriate.
  • B — AWS Service Catalog publishes approved products for self-service deployment. It governs what can be launched, not how well-sized it is afterwards.
  • D — AWS Config records resource configurations and evaluates them against compliance rules. It can flag a configuration as non-compliant but does not produce utilization-based sizing recommendations.

Last verified: 2026-08-26

Question 87 clf-cloud-concepts-fundamentals-087

Intermediate · Choose one

A company's existing per-core database licenses cannot, under the vendor's terms, be applied to shared-tenancy cloud infrastructure. What is the correct economic conclusion for its migration business case?

  1. a The licences transfer to AWS at no cost, so licensing can be excluded from the business case
  2. b AWS waives third-party licensing charges for workloads that are migrated from on premises
  3. c Licensing cost is unaffected by the migration, so the existing figure can be carried across unchanged
  4. d The business case must budget either for a licensing-compatible deployment option or for license-included pricing, because the existing licences cannot be assumed to carry over
Show answer & explanation

Answer: D

Why D is correct

Existing entitlements are only worth what their terms allow. If the vendor forbids shared tenancy, the company either deploys on an option that satisfies those terms, which carries its own cost profile, or it pays for license-included capacity and treats the old licences as stranded. Either way the business case has a licensing line that a naive comparison would omit, and getting this wrong is one of the most common ways a migration business case turns out to be optimistic.

Why the others are wrong

  • A — License mobility is granted by the software vendor, not by AWS. Where the terms do not permit it, the entitlement simply cannot be used on that deployment.
  • B — AWS does not absolve customers of third-party licensing. It offers license-included options in some services, but that is a charge rather than a waiver.
  • C — The cost changes precisely because the deployment model changes. Tenancy, core counting, and whether AWS or the customer supplies the licence all move the figure.

Last verified: 2026-08-26

Question 88 clf-cloud-concepts-fundamentals-088

Intermediate · Choose one

Which AWS service helps an organization manage software licenses from vendors such as Microsoft, SAP, Oracle, and IBM across AWS and on-premises environments, and can enforce licensing rules to reduce the risk of non-compliance?

  1. a AWS Marketplace
  2. b AWS Artifact
  3. c AWS Trusted Advisor
  4. d AWS License Manager
Show answer & explanation

Answer: D

Why D is correct

AWS License Manager centralizes the tracking and enforcement of software license terms across AWS and on-premises environments. Administrators define licensing rules, such as counting sockets, physical cores, or virtual CPUs, and License Manager enforces usage limits, which reduces the risk of over-deployment and the cost exposure of a failed audit.

Why the others are wrong

  • A — AWS Marketplace is a catalog for finding, buying, and deploying third-party software. It is a purchasing channel rather than a license tracking and enforcement service.
  • B — AWS Artifact is a self-service portal for downloading AWS compliance reports and agreements. It concerns AWS's own compliance evidence, not customer software licensing.
  • C — AWS Trusted Advisor provides best-practice recommendations across categories including cost and security. It does not track third-party license entitlements.

Last verified: 2026-08-26

Question 89 clf-cloud-concepts-fundamentals-089

Intermediate · Select 2 answers

A company automates the provisioning, patching, and shutdown of its non-production environments. Which TWO economic benefits does this automation deliver? (Choose TWO.)

  1. a Automation removes the need to monitor the environments
  2. b Staff time previously spent on repetitive manual tasks is freed for higher-value work
  3. c Environments stop running when they are not needed, so compute charges accrue only while they are in use
  4. d AWS applies a discount to accounts that use automation
  5. e Automation eliminates data transfer charges between Availability Zones
Show answer & explanation

Answer: B and C

Why B and C are correct

Automating operations reduces the frequency of manual tasks, which both improves consistency and frees infrastructure and staff time for higher-value work and innovation. Automated shutdown then attacks the largest source of non-production waste directly: environments that sit running outside working hours accrue charges for capacity nobody is using.

Why the others are wrong

  • A — Monitoring remains essential. Automation increases the rate of change, which makes visibility more important rather than less.
  • D — There is no automation discount. The savings come from consuming fewer resource-hours, which appears in the normal usage-based bill.
  • E — Data transfer charges depend on the traffic the architecture generates, not on how the environment is provisioned.

Last verified: 2026-08-26

Question 90 clf-cloud-concepts-fundamentals-090

Intermediate · Choose one

Which statement best explains why a workload that is lifted unchanged onto oversized, always-on Amazon EC2 instances may cost more on AWS than it did on premises?

  1. a On-premises hardware has no ongoing cost once purchased, so it is always cheaper
  2. b Cloud savings come from elasticity, rightsizing, and managed services, none of which a straight lift and shift applies
  3. c AWS charges a premium for workloads that were migrated rather than built in the cloud
  4. d AWS prices are set higher than the equivalent on-premises hardware in every Region
Show answer & explanation

Answer: B

Why B is correct

Cost savings are not automatic; they follow from changing how capacity is consumed. Peak-sized instances that never scale in, running 24 hours a day, reproduce the on-premises waste while adding a per-hour charge for it. The levers that produce savings are rightsizing, scaling with demand, turning off idle environments, and moving operational burden to managed services.

Why the others are wrong

  • A — Owned hardware continues to consume power, cooling, floor space, network, maintenance, and staff attention, and it must eventually be refreshed.
  • C — No such premium exists. Pricing depends on the resources consumed, not on how the workload arrived.
  • D — There is no blanket price relationship. The outcome depends on utilization, architecture, and what the on-premises comparison includes.

Last verified: 2026-08-26