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Amazon CLF-C02 Exam > S3 Storage Classes > Flashcards

S3 Storage Classes Flashcards

1
Q

What are the S3 Storage Classes in order from most frequently accessed to least?

A

Express One-Zone
Standard - General Purpose
Standard - Infrequent Access (IA)
One Zone - Infrequent Access (IA)
Glacier Instant Retrieval
Glacier Flexible Retrieval
Glacier Deep Archive

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2
Q

How do you upload objects

A

Via the console, the CLI, or programmatically from within code using SDK’s

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3
Q

What is the S3 Standard - General Purpose Storage class and what is it recommended for?

A
  • This is the default and is for frequently accessed data
  • Low latency & high throughput
  • use cases: Big Data analytics, mobile & gaming, content distribution, dynamic websites
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4
Q

What is S3 Intelligent Tiering and what is it recommended for?

A
  • automatically moves your data to the most cost-effective storage class
  • small monthly and auto-tiering fee; NO retrieval fees
  • automatically moves downward thru these types depending on when last accessed:
    Frequent (default)
    Infrequent Access obj not accessed after 30 days
    Archive Instant Access: obj not accessed after 90 days
    Archive Access: configurable from 90-700+ days
    Deep Archive Access: config from 180-700+ days
  • rec: data with unknown or changing access patterns. Uses machine learning behind-the-scenes
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5
Q

What is S3 Express One-Zone and what is it recommended for?

A
  • Your most frequently accessed data
  • single AZ which you can select
  • storage auto scales
  • save 50% over S3 standard
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6
Q

What is S3 Standard - Infrequent Access (IA)?

A
  • Infrequent Data Access but requires rapid access
  • Cheaper than S3 standard but cost on retrieval
  • rec: long lived data, infrequently accessed, millisecond access access when needed
  • examples: Disaster recovery, backups
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7
Q

What is S3 One Zone - Infrequent Access (IA)?

A
  • Not frequently accessed but stored in only one AZ
  • 20% less than S3 Standard- IA
  • Data can be lost
  • rec: re-creatable data
    infrequently accessed with millisecond access
    availability and durability not essential
    use case: store 2ndary backup copies of on-premise or re-creatable data
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8
Q

What is S3 Glacier Instant retrieval and what is it recommended for?

A
  • lowest-cost storage for long-lived data that is rarely accessed
  • requires retrieval in milliseconds
  • rec: needs immediate access such as medical images, news media assets, user-generated content archives
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9
Q

What is S3 Glacier Flexible retrieval and what is it recommended for?

A
  • Long-term data storage and archival for lower costs
  • 3 retrieval options: 1-5 min, 3-5 hours, 5-12 hours(free)
  • rec: backup, disaster recovery, offsite data storage needs, media editing
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10
Q

What is S3 Glacier Deep archive recommended for?

A
  • access once or twice per year
  • long term storage like 7-10 years
  • rec: retaining data for regulatory compliance or where lowest cost is critical (more critical than accessing data quickly)
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11
Q

What is S3 Outposts and what is it recommended for?

A
  • Provides object storage on-premises
  • single storage class only
  • can store data across multiple devices and servers
  • rec: data that needs to be kept local
    demanding app performance needs
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12
Q

Which S3 storage classes are NOT stored across multiple AZ’s?

A

S3 Express One-zone
S3 One Zone - IA

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13
Q

What would you use S3 for in the real world?

A
  1. Static Websites: Deploy static websites to S3 and use CloudFront for global distribution
  2. Data archive: Glacier
  3. Analytics systems: use with analytics systems like Redshift(a data warehouse thing) and Athena
  4. Mobile apps: use s3 transfer acceleration to speed up the process of getting the files from s3
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14
Q

What are the retrieval options for S3 Glacier Instant Retrieval?

A

-lowest-cost storage for long-lived data that is rarely accessed and requires retrieval in milliseconds
- min storage duration is 90 days(once per quarter)
- examples: medical images, news media assets, user-generated content archives; backup that needs to be accessed in milliseconds

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15
Q

What are the retrieval options for S3 Glacier Flexible Retrieval ?

A
  • Has 3 flexibilities:
    Expedited: 1-5 min; Standard: 3-5 hrs; Bulk: 5-12 hrs and FREE
  • min storage duration is 90 days
    Archive data that does not require immediate access
  • Backup and archive data that is rarely accessed and low cost
  • Needs to retrieve large datasets at no cost
  • examples: backup or disaster recovery
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16
Q

What are the retrieval options and use cases for S3 Glacier Deep Archive ?

A
  • the lowest cost storage in the cloud
  • 2 types: Standard (12 hrs) Bulk(48 hrs)
  • min storage duration is 180 days
  • Archive data that is very rarely accessed and very low cost
  • examples: regulatory compliance archives and digital media preservation
17
Q

How can you move data between classes?

A

Manually or by using S3 Lifecycle configurations

18
Q

Describe the Glacier storage category

A
  • Low-cost object storage meant for archiving & backup
  • pricing: pricing for storage + retrieval cost
  • there are 3 classes
19
Q

Which s3 options do not have retrieval fees?

A

Standard and Intelligent-Tiering

20
Q

Rank the Glacier classes with respect to Retrieval Time and Cost

A

fast retrieval and higher cost

S3 Glacier Instant Retrieval
S3 Glacier Flexible Retrieval
S3 Glacier Deep Archive

slow retrieval and lower cost

21
Q

What are the cloud pricing models?

A

Compute: pay for compute time
Storage : Pay for data stored in the cloud
Networking : only pay for when data leaves the cloud. Data in the cloud is free

22
Q

What are availability zones?

A
  • 1 or more physically separated data centers
  • Redundant power, networking, connectivity
  • They allow for high availability
  • It’s where you deploy to
23
Q

What are the different Content Delivery Systems?

A

Cloud Front
Global Accelerator
S3 Transfer Acceleration

24
Q

What origins does Cloud Front pull from when the content is not in the cache?

A

S3 bucket
EC2 Instance
Elastic Load Balancer

Amazon CLF-C02 Exam (24 decks)

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