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Cloud Academy - AWS Certified Solutions Architect - Professional > Simple Storage Service (S3) > Flashcards

Simple Storage Service (S3) Flashcards

1
Q

What geographical context are S3 buckets contained?

A

Regional

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2
Q

How is an object replicated in S3?

A

Multiple copies of an object in multiple availability zones

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3
Q

What is the durability of an object stored in S3 standard?

A

99.999999999%

Eleven 9s

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4
Q

What is the availability of an object stored in S3 standard?

A

99.99%

Four 9s

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5
Q

Difference between durability and availability?

A

Durability is the probability of data not suffering loss.

Availability is the uptime percentage of an object.

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6
Q

True or false: S3 buckets names must be unique in its given region?

A

False: Bucket names must be unique globally, meaning no other bucket may be named the same as another across all of AWS.

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7
Q

Define S3

A

Full managed, highly available, highly durable, cost-effective and widely accessible object-based storage service.

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8
Q

What is the maximum storage s3 offers?

A

Unlimited

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9
Q

What are the minimum and maximum storage sizes per object in S3?

A 
Minimum = 0 bytes
Maximum = 5 terabytes
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10
Q

What are the three storage classes in S3?

A

Standard
Standard - Infrequent Access
Reduced Redundancy

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11
Q

What security control access controls are present in S3?

A

Bucket policies, Access Control Lists, Data Encryption, SSL Support

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12
Q

What data management features are in available in S3?

A

Versioning

Lifecycle rules

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13
Q

True or False: S3 does not integrate with other AWS services?

A

False: S3 integrates with many AWS service

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14
Q

What are S3 charges primarily based upon?

A

Amount of storage used
requests
data transfer

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15
Q

Define Amazon Glacier

A

An extremely low cost, long term storage solution ideally suited for long term backup and archival requirements.

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16
Q

What is the durability rating of Glacier?

A

Eleven 9s.

17
Q

While Glacier is much cheaper than S3, what are some of the key differences between S3 and Glacier?

A

There is no instant access to data

Data is stored in vaults and archives

18
Q

How many archives are you allowed to make in Glacier?

A

Unlimited

19
Q

What can you do in the Glacier console?

A

You are limited to creating vaults

20
Q

To move data into and out of Glacier, what are your options?

A

Glacier service API
AWS SDK
Lifecycle policies

21
Q

What are the three storage retrieval options?

A

Expedited
Standard
Bulk

22
Q

True or False: Encryption is enabled by default in Glacier?

A

True

23
Q

What encryption algorithm is used in Glacier?

A

AES-256

24
Q

What access control options are available in Glacier?

A

IAM
Vault access policies
Vault lock policies

25
Q

True or false: The more storage you use in Glacier, the lower the price per GB?

A

False: In Glacier, the price is always the same regardless of the amount used.

26
Q

What is the primary function of Glacier?

A

Archival of data for extended periods of time for a very small cost.

27
Q

What is the terminology used to describe the archival of data for extended periods of time?

A

Cold storage

28
Q

How is an EC2 instance store volume attached to an EC2 instance?

A

Directly and physically on the same host as the EC2 instance.

29
Q

What is the primary function of EC2 instance store?

A

To provide ephemeral storage for EC2 instances

30
Q

Why should you not use EC2 storage for critical, valuable data or data with a long term availability need?

A

If the instance is stopped or terminated, the data on the instance store is lost.

31
Q

True or false: data stored on EC2 instance store will be lost upon reboot?

A

False: Data will persist across an instance reboot. Only stopping or terminating an instance will result in data loss.

32
Q

True or false: EC2 instance store is a separate charge from EC2 compute and memory charges?

A

False: Instance store is included in EC2 charges.

33
Q

What advantage does EC2 instance store have?

A

Very high I/O speeds

34
Q

Due to I/O speeds of an EC2 instance store, what use cases make sense for instance store?

A

As a cache or buffer.

Cloud Academy - AWS Certified Solutions Architect - Professional (1 decks)

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