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AWS SAA-C03 > s3 > Flashcards

s3 Flashcards

1
Q

What is object storage?

A

When things are stored, they are stored as objects, not files or file hierarchies.

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2
Q

What size do you store data as?

A

0 Bytes to 5 TB

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3
Q

How do you name a bucket?

A

Unique name

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4
Q

What are the different storage classes?

A

Standard
Intelligent Tiering – Use ML to find the Storage class.
Standard Infrequent Access
One Zone IA
Glacier
Glacier Deep Archive

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5
Q

Which s3 storage class does not replicate across all three AZ?

A

One Zone IA

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6
Q

Place an order on s3 buckets for the ones that are cheaper

A

Intelligent Tiering – the most expensive
Standard- 2nd
Standard Infrequent Access 3rd 50% less than Standard.
One Zone IA 4th 20% less than Standard Infrequent Access. Reduced AV
Glacier 5th
Glacier Deep Archive 6th slow retrieval

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7
Q

How does data retrieval work with Glacier and Glacier deep archive?

A

Glacier- retrieval minutes to hours
Glacier Deep Archive- retrieval time is 12+ hrs.

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8
Q

Minimum storage duration charge?

A

Standard- NA
Intelligent Tiering, Standard IA, One Zone IA- 30 days
Glacier- 90 days
Glacier Deep Archive- 180

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9
Q

Are s3 buckets private or public by default?

A

Private
Can create logging per request that goes to a different bucket.

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10
Q

How do you control access to S3 bucket?

A

Access Control List
Bucket Policies- JSON

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11
Q

How do you manage control of an s3 bucket for a static hosting website?

A

Bucket Policies

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12
Q

How is traffic between the local host and the s3 bucket achieved?

A

SSL/TLS

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13
Q

What methods does s3 provide to achieve encryption at rest?

A

SSE-AES- s3 handles the key, AES-256
SSE-KMS- Envelope encryption- AWS KMS you manage the key. The Key is encrypted with another key.
SSE-C- Customer provides key
Client-Side Encryption- you encrypt your file before uploading it to s3

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14
Q

How do you manage control of an s3 bucket for a static hosting website?

A

Bucket Policies

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15
Q

How do you control access to S3 bucket?

A

Access Control List
Bucket Policies- JSON

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16
Q

Are s3 buckets private or public by default?

A

Private
Can create logging per request that goes to a different bucket.

17
Q

s3-Data consistency for New Objects

A

Provide Read After Write Consistency
Can read immediately after writing.

18
Q

How does data consistency work for overwrite (PUTS) or Delete Objects (DELETS)

A

Eventually Consistent.
Takes time to replicate in other AZ
You have to wait for new copies.

19
Q

How does data consistency work for overwrite (PUTS) or Delete Objects (DELETS)

A

Eventually Consistent.
Takes time to replicate in other AZ
You have to wait for new copies.

20
Q

What must be turned on for CRR to work?

A

Versioning in both the source and destination buckets.

21
Q

Can you turn on CRR between accounts?

A

Yes

22
Q

Can you disable bucket versioning?

A

No, only suspended

23
Q

How can you provide extra protection against your data being deleted in an s3 bucket?

A

MFA Delete

24
Q

How does s3 Lifecycle Management Work

A

It uses ML to move objects between storage classes or delete them.

25
Q

Can Lifecycle Management be applied to Versioning?

A

Yes, to both current and previous.

26
Q

Can you give an example of s3 Lifecycle Management?

A
27
Q

How does Transfer Acceleration work?

A

Though Cloud Front distributed Edge locations you can transfer files over long distances.

28
Q

How do users upload to s3 bucket via edge locations?

A

Distinct url for an Edge Location

29
Q

What are preassigned URLs for s3?

A

URL that provides temp access to object to either upload or download.

30
Q

How do you create pre-signed URLs?

A

AWS CLI or AWS SDK

31
Q

Under what conditions can MFA Delete be performed?

A

AWS CLI must be turned on MFA

32
Q

Is the interface for s3 Global or Regional

A

Interface is global, the bucket is regional.

AWS SAA-C03 (3 decks)

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