AWS Cloud Practitioner > Storage > Flashcards

Storage Flashcards

Contrast AWS storage options like S3, EBS, and Glacier for durability, accessibility, and pricing. (14 cards)

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1
Q

How much data can a company store in the Amazon S3 service?

  1. 1 PB
  2. 100 TB
  3. 100 PB
  4. Virtually unlimited
A

4. Virtually unlimited

The Amazon Simple Storage Service (S3) offers virtually unlimited storage. The total volume of data and number of objects you can store are unlimited. Individual Amazon S3 objects can range in size from a minimum of 0 bytes to a maximum of 5 terabytes. The largest object that can be uploaded in a single PUT is 5 gigabytes.

  • 1 PB is incorrect. There is no such limit.
  • 100 TB is incorrect. There is no such limit.
  • 100 PB is incorrect. There is no such limit.

Reference:
Amazon S3 FAQs

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2
Q

Which AWS hybrid storage service enables a user’s on-premises applications to seamlessly use AWS Cloud storage?

  1. AWS Backup
  2. Amazon Connect
  3. AWS Direct Connect
  4. AWS Storage Gateway
A

4. AWS Storage Gateway

AWS Storage Gateway is a hybrid cloud storage service that gives you on-premises access to virtually unlimited cloud storage. Customers use Storage Gateway to simplify storage management and reduce costs for key hybrid cloud storage use cases.

These include moving tape backups to the cloud, reducing on-premises storage with cloud-backed file shares, providing low latency access to data in AWS for on-premises applications, as well as various migration, archiving, processing, and disaster recovery use cases.

  • AWS Backup is incorrect. AWS Backup is a fully managed backup service that makes it easy to centralize and automate the backup of data across AWS services. It is not used for connecting on-premises storage to cloud storage.
  • Amazon Connect is incorrect. Amazon Connect is an easy to use omnichannel cloud contact center that helps companies provide superior customer service at a lower cost. It has nothing to do with storing data.
  • AWS Direct Connect is incorrect. AWS Direct Connect is a cloud service solution that makes it easy to establish a dedicated network connection from your premises to AWS. It is not related to storage of data.

Reference:
AWS Storage Gateway

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3
Q

Amazon S3 is typically used for which of the following use cases?

(Select TWO.)

  1. Host a static website
  2. Install an operating system
  3. Media hosting
  4. In-memory data cache
  5. Message queue
A

1. Host a static website
3. Media hosting

Amazon S3 is an object storage system. Typical use cases include: Backup and storage, application hosting, media hosting, software delivery and hosting a static website.

  • Install an operating system is incorrect. You cannot install an operating system on an object-based storage system. Instead, you need a block-based storage system such as Amazon EBS.
  • In-memory data cache is incorrect. You cannot use Amazon S3 as an in-memory data cache; for this you need a service such as Amazon ElastiCache.
  • Message queue is incorrect. You cannot use Amazon S3 as a message queue (or at least it is not a typical use case). You should use a services such as Amazon SQS or Amazon MQ.

Reference:
Understand common use cases

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4
Q

Which service can be used to cost-effectively move exabytes of data into AWS?

  1. AWS Snowmobile
  2. AWS Snowball
  3. S3 Transfer Acceleration
  4. S3 Cross-Region Replication (CRR)
A

1. AWS Snowmobile

With AWS Snowmobile you can move 100PB per snowmobile. AWS call this an Exabyte-scale data transfer service.

  • AWS Snowball is incorrect. With AWS Snowball you can move up to 80TB per device. AWS call this a petabyte-scale data transfer service.
  • S3 Transfer Acceleration is incorrect. S3 Transfer Acceleration is meant speed up uploads to Amazon S3 but would not be used for exabytes of data.
  • S3 Cross-Region Replication (CRR) is incorrect. S3 Cross-Region Replication is used for copying data between regions, not into AWS. It is also unsuitable for moving such as huge amount of data.

Reference:
AWS Snowball

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5
Q

A company requires a single service which can manage their backup and restore requirements, their data lakes, and archives all in one place.

Which AWS service is suitable for all these use cases?

  1. Amazon Elastic File System (Amazon EFS).
  2. Amazon FSx for Lustre.
  3. Amazon Elastic Block Store (Amazon EBS).
  4. Amazon Simple Storage Service (Amazon S3).
A

4. Amazon Simple Storage Service (Amazon S3).

Amazon S3 is the only service out of the answers which can be used for backup and restore, data lakes and archival solutions. Because S3 is an object storage service, there are lots of different use cases.

  • Amazon Elastic File System (Amazon EFS) is incorrect because Amazon EFS is a fully managed service providing NFS shared file system storage for Linux workloads - and is not ideally suited for backup and restore, data lakes or archival storage.
  • Amazon FSx for Lustre is incorrect. This is simply not a good use case for backup and restore, data lakes or for archival storage. EFS for Lustre was designed to support terabytes per second of throughput and millions of IOPS.
  • Amazon Elastic Block Store (Amazon EBS) is incorrect as Amazon EBS is a block storage device which is massively scalable and resilient. It’s typically used for persistent HDD / SSD storage for EC2 instances, not for data lakes, archives or for backup and restore.

Reference:
Amazon S3

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6
Q

What are two components of Amazon S3?

(Select TWO.)

  1. Buckets
  2. Directories
  3. Objects
  4. Block devices
  5. File systems
A

1. Buckets
3. Objects

Amazon S3 is an object-based storage system that is accessed using a RESTful API over HTTP(S). It consists of buckets, which are root level folders, and objects, which are the files, images etc. that you upload.

The terms directory, file system and block device do not apply to Amazon S3.

Reference:
What is Amazon S3?

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7
Q

Which storage type can be mounted using the NFS protocol to many EC2 instances simultaneously?

  1. Amazon Instance Store
  2. Amazon EBS
  3. Amazon S3
  4. Amazon EFS
A

4. Amazon EFS

EFS is a fully-managed service that makes it easy to set up and scale file storage in the Amazon Cloud. EFS uses the NFSv4.1 protocol. Can concurrently connect 1 to 1000s of EC2 instances, from multiple AZs.

  • Amazon Instance Store is incorrect. Amazon Instance Store is a type of ephemeral block-based volume that can be attached to a single EC2 instance at a time.
  • Amazon EBS is incorrect. EBS volumes can only be attached to a single EC2 instance at a time and are block devices (not NFS).
  • Amazon S3 is incorrect. Amazon S3 is an object store and is connected to using a RESTful protocol over HTTP.

Reference:
Amazon Elastic File System

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8
Q

Which AWS service enables hybrid cloud storage between on-premises and the AWS Cloud?

  1. Amazon S3 Cross Region Replication (CRR)
  2. AWS Storage Gateway
  3. Amazon Elastic File System (EFS)
  4. Amazon CloudFront
A

2. AWS Storage Gateway

The AWS Storage Gateway service enables hybrid cloud storage between on-premises environments and the AWS Cloud. It seamlessly integrates on-premises enterprise applications and workflows with Amazon’s block and object cloud storage services through industry standard storage protocols.

  • Amazon S3 Cross Region Replication (CRR) is incorrect. Amazon S3 CRR is used for copying data from one S3 bucket to another S3 bucket in another region. That is not an examples of hybrid cloud.
  • Amazon Elastic File System (EFS) is incorrect. Amazon EFS is not a hybrid cloud storage solution. With EFS you can mount file systems from on-premises servers, however it does not offer a local cache or method of moving data into the cloud.
  • Amazon CloudFront is incorrect. Amazon CloudFront is a content delivery network. It is used to get content closer to users, it is not a hybrid cloud storage solution.

Reference:
AWS Storage Gateway Documentation

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9
Q

It is necessary for a company to have access to scalable, highly reliable, and fully managed file storage that runs on the Server Message Block (SMB) protocol.

Which AWS service will meet these requirements?

  1. Amazon S3.
  2. Amazon Elastic File System (Amazon EFS).
  3. Amazon FSx for Windows File Server.
  4. Amazon Elastic Block Store (Amazon EBS).
A

3. Amazon FSx for Windows File Server

Amazon FSx for Windows File Server provides fully managed Microsoft Windows file servers, backed by a fully native Windows file system. Amazon FSx supports a broad set of enterprise Windows workloads with fully managed file storage built on Microsoft Windows Server. Amazon FSx has native support for Windows file system features and for the industry-standard Server Message Block (SMB) protocol to access file storage over a network.

  • Amazon S3 is incorrect, as Amazon S3 is an object storage service, and does not use the SMB protocol.
  • Amazon Elastic File System (Amazon EFS) is incorrect. Although it is a file, it is a Linux based file system which uses the NFS protocol, not the SMB like a Windows server.
  • Amazon Elastic Block Store (Amazon EBS) is incorrect. This service is a block-based storage system, not a file-based storage system. SMB is a file-based storage protocol.

Reference:
Amazon FSx for Windows File Server

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10
Q

Which type of storage stores objects comprised of key, value pairs?

  1. Amazon DynamoDB
  2. Amazon EBS
  3. Amazon EFS
  4. Amazon S3
A

4. Amazon S3

Amazon Simple Storage Service is storage for the Internet. It is designed to make web-scale computing easier for developers. Amazon S3 is an object-based storage system that stores objects that are comprised of key, value pairs.

  • Amazon DynamoDB is incorrect. Amazon DynamoDB stores items, not objects, based on key, value pairs.
  • Amazon EBS is incorrect. Amazon EBS is a block-based storage system.
  • Amazon EFS is incorrect. Amazon EFS is a file-based storage system.

Reference:
What is Amazon S3?

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11
Q

Which type of EBS volumes can be encrypted?

  1. Non-root volumes only
  2. Both non-root and root volumes
  3. Only non-root volumes created from snapshots
  4. Only root volumes can have encryption applied at launch time
A

2. Both non-root and root volumes

Amazon EBS encryption offers a straight-forward encryption solution for your EBS resources that doesn’t require you to build, maintain, and secure your own key management infrastructure. It uses AWS Key Management Service (AWS KMS) customer master keys (CMK) when creating encrypted volumes and snapshots.
Encryption operations occur on the servers that host EC2 instances, ensuring the security of both data-at-rest and data-in-transit between an instance and its attached EBS storage.
All volumes can now be encrypted at launch time and it’s possible to set this as the default setting.

  • Non-root volumes only is incorrect as this is not true.
  • Only non-root volumes created from snapshots is incorrect as you can encrypt all EBS volumes whether created from snapshots or not.
  • Only root volumes can have encryption applied at launch time is incorrect as all volumes can have encryption applied at launch time.

Reference:
Amazon EBS encryption

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12
Q

What feature of Amazon S3 enables you to set rules to automatically transfer objects between different storage classes at defined time intervals?

  1. Elastic Data Management
  2. Object Lifecycle Management
  3. Auto Lifecycle Scaling
  4. S3 Archiving
A

2. Object Lifecycle Management

Object lifecycle management can be used with objects so that they are stored cost effectively throughout their lifecycle. Objects can be transitioned to another storage class or expired.
All other options are incorrect as they are not services that can automatically transfer objects between S3 storage classes.

Reference:
Managing the lifecycle of objects

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13
Q

What charges are applicable to Amazon S3 Standard storage class?

(Select TWO.)

  1. Per GB/month storage fee
  2. Retrieval fee
  3. Minimum capacity charge per object
  4. Data ingress
  5. Data egress
A

1. Per GB/month storage fee
5. Data egress

With the standard storage class you pay a per GB/month storage fee, and data transfer out of S3. Standard-IA and One Zone-IA have a minimum capacity charge per object. Standard-IA, One Zone-IA, and Glacier also have a retrieval fee. You don’t pay for data into S3 under any storage class.

Reference:
Amazon S3 pricing

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14
Q

How can a company protect their Amazon S3 data from a regional disaster?

  1. Archive to Amazon Glacier
  2. Use Cross-Region Replication (CRR) to copy to another region
  3. Use lifecycle actions to move to another S3 storage class
  4. Enable Multi-Factor Authentication (MFA) delete
A

2. Use Cross-Region Replication (CRR) to copy to another region

Cross-Region replication (CRR) is used to copy objects across Amazon S3 buckets in different AWS Regions. The only option here that will help is to use CRR to copy the data to another region. This will provide disaster recovery.

  • Archive to Amazon Glacier is incorrect. Moving to Glacier does not copy the data out of the region.
  • Use lifecycle actions to move to another S3 storage class is incorrect as this will not move the data to another region.
  • Enable Multi-Factor Authentication (MFA) delete is incorrect. Enabling MFA delete will not protect the data from a regional disaster.

Reference:
Replicating objects within and across Regions

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