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AWS Cloud Practitioner > Domain 3: Technology - Storage > Flashcards

Domain 3: Technology - Storage Flashcards

1
Q

How large can individual S3 files be?

A

5 TB

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2
Q

What is the S3 maximum storage allowed?

A

No limit

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3
Q

What are the types of URL formats for S3 bucket access?

A

Virtual hosted style

Path style

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4
Q

When you upload a file to S3, success is indicated by …..

A

An HTTP 200 code

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5
Q

What is the data consistency model for S3?

Why does it work that way?

A

Read after Write - New object PUTS

Eventual Consistency - Overwrite PUTS and DELETES

Propagation across AZs can take time for updates and deletes

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6
Q

What are the characteristics of an S3 object?

A

Key - Name of the object

Value - Binary data

Version ID

Metadata

ACL - individual permissions

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7
Q

What are the S3 SLA guarantees for availability and durability?

A

99.9% Available

11 x 9 Durability

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8
Q

What are the features that S3 buckets support?

A

Lifecycle Management

Versioning

Encryption

ACL Security (individual files)

Bucket Level Security

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9
Q

What are the available S3 storage classes?

A

S3 Standard

S3 - IA

S3 One Zone - IA

Glacier

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10
Q

What are the features of the S3 Standard storage class?

A

99.99% Availability

11 x 9 Durability

  1. 9% Availability Design
  2. 9% Availability SLA

No data retrieval fee

Stored across multiple disks and AZs

Designed to sustain loss of 2 facilities

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11
Q

What are the features of the S3 - IA storage class?

A

Used for data accessed less frequently but requires rapid retrieval when needed

11 x 9 durability

99.9% Availability Design

99% Availability SLA

Per GB retrieval fee

Multiple AZ storage

Lower cost the standard but charges for retrieval

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12
Q

What are the features of the S3 One Zone IA storage class?

A

Lower cost than S3 - IA

Only stored in 1 AZ

11 x 9 durability

99.5% Availability Design

Per GB retrieval fee

99% Availability SLA

No multiple AZ storage

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13
Q

What are the features of the Glacier storage class?

A

Very inexpensive

Used for archival purposes only

3 retrieval levels:
Expedited (minutes),
Standard(3-5 hours)
Bulk (5-12 hours)

Per GB retrieval fee

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14
Q

What are the potential sources of charges for S3 buckets?

A

Storage

Requests

Tags

Data Transfer (replication)

Transfer Acceleration

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15
Q

What are the parts of a virtual hosted S3 bucket URL?

A

The bucket name is part of the domain name

http://bucket_name.s3.amazonaws.com

or

http://bucket_name.s3-aws-region.amazonaws.com

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16
Q

What are the parts of a path style S3 bucket URL?

A

The endpoint must match the region

http://s3-aws-region.amazonaws.com/bucket_name

17
Q

Where are EBS volumes stored?

A

Virtually and Replicated across an AZ

18
Q

What are the available EBS Volume Types?

A

GP2 - General Purpose 2

IO1 - Provisioned IOPS

ST1 - Throughput Optimized

SC1 - Cold HDD

Standard - Magnetic

19
Q

What are GP2 volumes and when are they used?

A

General Purpose SSD

< 10,000 IOPS

20
Q

What are IO1 volumes and when are they used?

A

Provisioned IOPS SSD

I/O intensive apps

large RDS or NoSQL DBs

> 10,000 IOPS

21
Q

What are ST1 volumes and when are they used?

A

Throughput Optimized HDD

Big Data

Data Warehouses

Log Processing

Cannot be a boot volume

22
Q

What are Cold HDD volumes and when are they used?

A

Lowest Cost per GB of all EBS bootables

Infrequently accessed workloads

lowest storage cost important

23
Q

What are Magnetic Standard EBS volumes?

A

Previous generation magnetic

Can be boot volume

24
Q

How does S3 Transfer Acceleration Work?

A

Users worldwide upload to Edge Locations

Edge Locations replicate to your S3 bucket

25
Q

How can objects in transit to S3 be encrypted?

A

Using SSL

26
Q

Websites can be hosted on S3 but what are the limitations?

A

Static files only (html, javascript)

Cannot use database connections

AWS Cloud Practitioner (14 decks)

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