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Objective 3.6

CLF-C02

Identify AWS storage services.

Objective 3.6 sits in Cloud Technology and Services, which carries 34% 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.

3-6Cloud Technology and Services

A bucket holds objects whose access pattern nobody can predict and which shifts over time. Which storage class fits, with no retrieval fees?

S3 One Zone-IAOne Zone-IA saves money by keeping a single copy in a single Availability Zone. It still charges to retrieve, and it is not resilient to losing that zone.
S3 Standard-IAStandard-IA charges a retrieval fee and assumes you already know the data is cold. Guessing wrong on a busy object costs you twice.
S3 Intelligent-TieringCorrect · your answerCorrect. There are no retrieval fees for S3 Intelligent-Tiering, which monitors access patterns and moves objects to lower-cost tiers on its own.
S3 Glacier Instant RetrievalGlacier Instant Retrieval targets data you rarely touch but need in milliseconds. A minimum storage duration and retrieval charges come with it.

Correct.

Checked against docs.aws.amazon.com, August 2026

Concept

Tiered storage saves money only if something moves objects at the right moment. When the access pattern is unknown, picking a tier by hand and writing a lifecycle rule is a bet you will lose.

Why C

One class watches how each object is used and shifts it between tiers on its own, for a small monthly monitoring charge and nothing to read the data back. That is the right shape when demand is unpredictable.

Source

S3 Intelligent-Tiering is the ideal storage class when you want to optimize storage costs for data that has unknown or changing access patterns. There are no retrieval fees for S3 Intelligent-Tiering…

AWS Docs: Amazon S3 storage classes, checked August 2026
#s3#storage-classes#cost-optimization

Now you: objective 3.6 questions

No account needed. The explanation opens when you answer.

Sample question 1 of 3

3-6Cloud Technology and Services

A log processing job streams large sequential reads where throughput matters far more than IOPS. Which EBS volume type fits?

Sample question 2 of 3

3-6Cloud Technology and Services

Twenty EC2 instances need to read and write the same directory tree over NFS at the same time. Which storage service fits?

Sample question 3 of 3

3-6Cloud Technology and Services

A team stores object replicas it can regenerate if a zone is lost, and wants the cheapest infrequent access class. Which one?

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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 Cloud Technology and Services