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Mixed skills
10 original practice questions · Untimed · Follow each question’s response instructions
1. A fictional school sells tickets during unpredictable registration bursts. The team wants computing capacity to rise during bursts and fall when demand subsides. Which property directly addresses that requirement?
aws-clf-q-0012. A fictional team has not launched its project. It wants to model the cost of assumed service configurations and usage before committing to the plan. Which tool purpose is the direct fit?
aws-clf-q-0453. A fictional legacy reporting component still depends on a data service whose replacement has not been tested. The migration brief requires a recoverable cutover. What is the most justified next planning step?
aws-clf-q-0074. A fictional team wants a managed relational engine so it can reduce common database-host operations. It still needs to design its schema, tune queries, and decide data access. Which proposal preserves that boundary?
aws-clf-q-0355. A fictional service has measured unused compute capacity but must preserve its current performance target. Staff also recreate the same environment settings manually each week and want a reusable declared definition to replace that repeated manual provisioning. Which TWO proposals directly address these sizing and repeatability requirements? Select exactly TWO.
Select all that apply.
aws-clf-q-0046. A volunteer analyst keeps tabular event files in S3 and wants occasional standard-SQL exploration without setting up a persistent database server. Which AWS service is directly presented as an interactive query service for this S3-data analysis task?
aws-clf-q-0537. A fictional translation company installs its application on an EC2 instance. A security notice requires an update to the instance's guest operating system. Under the shared responsibility model, who is responsible for managing that update?
aws-clf-q-0098. A fictional operations lead investigates a user slowdown. The immediate question is how response latency and resource utilization changed over the afternoon, not which identity edited a setting. Which service purpose fits this evidence need?
aws-clf-q-0179. A fictional procurement reviewer needs AWS security and compliance reports as evidence for its own due-diligence assessment. Which statement correctly identifies the resource and its limit?
aws-clf-q-01910. A fictional group of Linux application instances must access the same files through a shared NFS file-system interface. Which storage service category most directly matches that stated requirement?
aws-clf-q-031Answers & reasoning
1. Adjusting consumed capacity with demand · Choice C
The controlling requirement is a change in capacity in both directions as workload demand changes, rather than simply a high fixed peak capacity. Cloud consumption can adjust with demand. Keeping peak capacity permanently running addresses a peak but misses the requested reduction afterward. Choose demand-matched capacity. Check that the conclusion is about elasticity; it neither proves lower total cost nor guarantees availability during every failure.
aws-clf-q-0012. AWS Pricing Calculator for an input-based estimate · Choice D
There is no recorded project usage yet; the team needs a scenario model from explicit assumptions. Pricing Calculator supports cost estimates from selected service/configuration inputs before using the services. Choose Calculator for the assumed configuration model. Recorded-cost analysis, threshold tracking, and allocation reports are useful for different questions but do not supply the requested pre-launch estimate.
aws-clf-q-0453. Map and validate the dependency, then plan a migration wave with cutover and rollback checks · Choice A
The blocker is an untested dependency and the explicit requirement for a recoverable cutover. Migration waves use portfolio and dependency information along with cutover and rollback planning. Validate that relationship before fixing a move sequence. Choose dependency-aware readiness planning. Check that standalone tests, moving first, or preparing rollback instructions alone do not establish that the required replacement dependency works before cutover.
aws-clf-q-0074. Use RDS for managed common database operations while retaining customer query and security work · Choice B
The team asks to reduce common operations, not to delegate its entire data model and business authorization policy. RDS manages common database tasks including backups and software patching. Query tuning and controls matched to the customer's data and organization remain customer responsibilities. Choose managed common database operations with retained customer work. Keeping EC2 host administration does not supply the desired reduction; neither RDS query tuning nor customer access rules become AWS infrastructure decisions.
aws-clf-q-0355. Evaluate a smaller appropriate resource allocation against the measured workload and performance target; Define reusable infrastructure settings in a template for the repeated provisioning task
There are two separate problems: capacity exceeds the measured need, and repeated provisioning depends on manual recreation. Evaluate resource size against workload and the retained performance target; use a reusable declared template to address repeated provisioning. Neither proposal supplies a measured savings result. Select both scoped proposals. Check that unit price or a proportional cut does not establish workload fit, and that inspection notes leave the requested reusable provisioning definition unresolved.
aws-clf-q-0046. Amazon Athena · Choice D
The files already exist in S3 and the missing operation is interactive SQL execution, not capture or preparation. Athena directly matches interactive serverless SQL analysis of S3 data. Glue preparation and catalog metadata can support analytics but are not the requested query runtime by themselves. A stream-ingestion proposal would address an earlier arrival stage. This is a purpose comparison, not a claim that no other AWS analytics service can ever query S3.
aws-clf-q-0537. The customer operating the EC2 application · Choice B
Identify the layer: the notice concerns the guest OS inside a customer-managed EC2 instance, rather than the physical host. For this service model the customer manages guest OS security updates and installed application software. AWS manages the underlying infrastructure. Therefore assign the update to the customer. Check the allocation by asking whether the same notice instead concerned AWS host infrastructure; that different layer would change the owner.
aws-clf-q-0098. CloudWatch operational observability · Choice D
Identify the requested evidence as performance over time, including latency and resource utilization. CloudWatch provides operational observability for performance, health, and utilization. The fact that CloudTrail records actions does not make an action list the requested metric series. Choose CloudWatch for this purpose. Check the narrow conclusion: this is not a claim that CloudWatch has no logs or that metrics prove who made a change.
aws-clf-q-0179. AWS Artifact supplies relevant AWS documents, which the reviewer still evaluates alongside customer controls · Choice C
The needed output is documentation about AWS controls, rather than a new permission, an operational metric, or a customer approval. AWS Artifact provides AWS security/compliance documents that can support an audit and evaluation of a customer's own controls. Use Artifact as evidence while continuing the customer assessment. Check that the conclusion does not promote a provider document into certification of the entire workload.
aws-clf-q-01910. Amazon EFS shared file storage · Choice B
The decisive requirement is multiple instances using a shared NFS interface to the same files. EFS supplies shared file storage using NFS. The other storage interfaces do not become NFS simply because their contents can be represented as files. Choose EFS for live shared NFS access. EBS volumes and snapshots serve block/recovery roles; S3 serves object access. Actual file-system availability and behavior remain configuration-dependent.
aws-clf-q-031Original source-grounded practice. Content and reasoning checks are separate from professional educator review, which remains pending. Not an official exam paper.