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My Exam > Exam 03 Storage and Cfront > Flashcards

Exam 03 Storage and Cfront 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? (2)

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? (5)

A

Key - Name of the object

Value - Binary data

Version ID

Metadata

ACL - individual permissions (access control list)

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7
Q

What are the S3 SLA guarantees for availability and durability? (2)

A

99.9% Available

11 x 9 Durability

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8
Q

What are the features that S3 buckets support? (5)

A

Lifecycle Management

Versioning

Encryption

ACL Security (individual files)

Bucket Level Policies

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9
Q

What are the 6 available S3 storage classes? (6)

A

S3 Standard

S3 - IA

S3 One Zone - IA

S3 Intelligent Tier

Glacier

Glacier Deep Archive

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10
Q

What are the 7 features of the S3 Standard storage class? (7)

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 One Zone IA storage class? (7)

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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12
Q

What are the features of the Glacier storage class? (4)

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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13
Q

What are the potential sources of charges for S3 buckets? (5)

A

Storage

Requests

Tags

Data Transfer (replication)

Transfer Acceleration

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14
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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15
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

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16
Q

Edge Location

A

Seperate from an AWS region. The location where content will be cached

17
Q

CDN Origin

A

Origin of the files to be distributed by the CDN

18
Q

What is a CDN? (4)

A

Content Delivery Network

Cache Locations in Edge Locations all over world

Cache files from an origin on first request

Reduces stress on web servers

19
Q

What is a Cloudfront Distribution?

A

Specifies where you want your content origin and how to track and manage content delivery

20
Q

How can Cloudfront support dynamic content?

A

It accepts querystring parameters and matches them to a cached response

21
Q

What are possible Cloudfront Origin types? (5)

A

S3 Bucket

EC2 Instance

Elastic Load Balancer

Route 53

Your own web server

22
Q

What are the types of Cloudfront distributions? (2)

A

Web

RTMP (Flash streaming)

23
Q

What are the features of the S3 - IA storage class? (7)

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

24
Q

What is a series of Edge Locations called for CDN?

A

A distribution

25
Q

Valid sections in CloudFormation template

A

Format Version

Description

Metadata

Parameters

Mappings

Conditions

Transform

Resources

Outputs

My Exam (7 decks)

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