CLF-C02 - Cloud Technology and Services (34% of the exam) - Section 3.9

Identify AWS storage services and their uses, including Amazon S3 storage classes, Amazon EBS, Amazon EFS, Amazon FSx, AWS Storage Gateway, lifecycle policies and AWS Backup.

Match the right AWS storage service to a use case: Amazon S3 for object storage with configurable storage classes and lifecycle policies, Amazon EBS for block storage on EC2, Amazon EFS for shared file storage, Amazon FSx for managed file systems, and AWS Storage Gateway for hybrid access. Recognise AWS Backup as the central service for automating backup policies.

Amazon S3Amazon EBSAmazon EFSS3 storage classes

Practice question for this objective

Free sampleCloud Technology and Servicesmedium

A team is mapping AWS storage services to the kind of storage each one provides so they pick the right tool for each workload. Which two statements correctly match an AWS storage service to its storage type? (Select TWO.)

  • AAmazon S3 is an object storage service that holds files as objects in buckets and is reached over the network through an API. Correct
  • BAmazon EBS provides block storage volumes that attach to a single Amazon EC2 instance and behave like a raw disk. Correct
  • CAmazon EFS provides block storage volumes that can attach to only one Amazon EC2 instance at a time, just like a local disk.
  • DAmazon S3 Glacier Deep Archive is a block storage service that attaches directly to running Amazon EC2 instances as a boot volume.
  • EAmazon FSx provides object storage buckets that applications read and write only through the Amazon S3 API endpoints.
Distinguish AWS storage by type: Amazon S3 is object storage, Amazon EBS is block storage, and Amazon EFS is shared file storage. AWS separates storage into object, block, and file. Amazon S3 keeps data as objects in buckets accessed by API; Amazon EBS presents block volumes that attach to one EC2 instance like a disk; Amazon EFS is a shared file system many instances mount at once, so it is neither object nor single-attach block storage.

Why A is correct: Amazon S3 stores data as objects inside buckets and is accessed over the network through its API, which is exactly what object storage means.

Why B is correct: Amazon EBS delivers block-level volumes that attach to an EC2 instance and present as a disk, which is the definition of block storage.

Why C is wrong: It is tempting because EFS is EC2 storage, but EFS is a shared file system reachable by many instances at once, not single-attach block storage.

Why D is wrong: This sounds plausible as low-cost storage, but Glacier Deep Archive is an S3 archival object class, not a block volume you boot an instance from.

Why E is wrong: It is tempting as managed AWS storage, but Amazon FSx offers fully managed file systems over file protocols, not S3-style object buckets.

See more CLF-C02 practice questions, answers explained.

Exam traps in Cloud Technology and Services

Answers that look right on this material and are not. Each one is a distractor from a different question in the CLF-C02 bank for this domain.

  • Amazon Elastic File System, which gives Amazon EC2 instances inside AWS a shared file system that several instances mount together

    Why it is wrong: Amazon EFS provides a shared file system for EC2 instances within AWS and is tempting for file access, but it does not bridge an on-premises data centre to S3 with local caching.

  • AWS Storage Gateway, which connects on-premises servers to AWS storage so existing local backup tools can write their data into the cloud

    Why it is wrong: AWS Storage Gateway extends on-premises storage into AWS, but it does not centrally schedule and retain backups across these cloud services.

  • Amazon S3, which stores files as objects in buckets that the instances reach over the network using web requests rather than a mounted file system

    Why it is wrong: Amazon S3 is tempting because it scales and is shared, but it is object storage accessed over an API, not a mounted file system that many instances write to together.

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