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AWS - Certified Solutions Architect - Associate (SAA-C03) > S3 > Flashcards

S3 Flashcards

1
Q

Is S3 object based storage?

A

Yes

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2
Q

What is the max file size for S3?

A

5TB

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3
Q

Is S3 suitable for DB and OS Data?

A

No

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4
Q

Whats the limit of storage for S3?

A

There is none. Its unlimited

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5
Q

What does an S3 URL look like?

A

https://bucket-name.s3.region.amazonaws.com/key-name

Example:
alexcostasbucket.s3.us-east-1.amazonaws.com/babypicture.jpg

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6
Q

When it comes to S3 objects what is the Key?

A

The object name. Such as babypicture.jpg

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7
Q

When it comes to S3 objects what is the Value?

A

The data itself which is made up of a sequence of bytes.

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8
Q

When it comes to S3 objects what is the metadata?

A

Data about the data you are storing. Such as content-type, last-modified etc

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9
Q

Are S3 buckets private by default?

A

Yes

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10
Q

What are Object ACLs used for with S3

A

Object ACLs allow you to make individual objects public, or unable to delete. etc

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11
Q

In S3 can you make an entire bucket public using a bucket policy?

A

Yes

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12
Q

Will you get an http 200 code if you successfully upload an object to S3?

A

Yes

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13
Q

Can you disable versioning for an S3 bucket once you turn it on?

A

Nope, you can only suspend it.

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14
Q

Can you use Lifecycle Rules with S3 versioning?

A

Yes, You can set it so your old object versions get moved to cold storage.

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15
Q

What are the six different S3 Storage tiers?

A

1) Standard
2) Standard-infrequent Access
3) One Zone-Infrequent Access
4) Glacier
5) Glacier Deep Archive
6) Intelligent tiering

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16
Q

What is S3 Standard best used for?

A

Suitable for most workloads, generic workloads.

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17
Q

What is S3 Standard-Infrequent Access best used for?

A

Good for long term infrequently accessed but critical data. Like backups.

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18
Q

What is S3 One Zone-Infrequent Access best used for?

A

Long term infrequent accessed but non critical data.

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19
Q

What is S3 Glacier Flexible Retrieval? used for?

A

Long-term data archiving that occasionally needs to be accessed within a few hours or minutes.

20
Q

What is S3 Deep Archive used for?

A

Rarely accessed data archiving with default retrieval times of 12 hours. Used mostly for regulatory purposes.

21
Q

What is S3 Intelligent-Tiering used for?

A

Unknown or unpredictable access patterns.

22
Q

What is S3 Glacier Instant retrieval used for?

A

Low cost long term storage that you need to access within milliseconds.

23
Q

What does S3 Intelligent-Tiering do?

A

Uses machine learning to look at your data and automatically place it in tiers based on how often the data is accessed.

24
Q

What does WORM stand for?

A

Write Once Read Many

25
Q

What S3 feature would you use to make data follow the WORM model?

A

S3 Object Lock

26
Q

What are the two modes for S3 Object Lock?

A

1) Compliance
2) Governance

27
Q

What does S3 Object Lock’s governance mode do?

A

Makes it so users can not overwrite or delete an object version r alter its lock settings unless they have special permissions.

28
Q

What does S3 Object Lock’s compliance do?

A

Makes it so no user, not even root, can overwrite or delete the object.

29
Q

What does S3 Glacier Vault Lock do?

A

Allows you to easily deploy and enforce compliance controls for individual S3 Glacier vaults with vault lock policy. Can enforce WORM model on glacier

30
Q

Once you lock a policy with S3 Glacier Vault Lock can you edit it?

A

No

31
Q

What are the three encryption types for S3?

A

Encryption in Transit
1) SSL/TLS
2) HTTPS

Encryption at Rest: SEE
1) Server-Side
2) SSE-S3 (AES 256-bit)
3) SSE-KMS
4) SSE-C

Client-Side Encryption
You encrypt them yourself before uploading them.

32
Q

What are the four types of encryption at rest for S3?

A

1) Server-Side
2) SSE-S3 (AES 256-bit)
3) SSE-KMS
4) SSE-C

33
Q

Can you enforce encryption with a bucket policy?

A

Yes

34
Q

What are prefixes in S3?

A

Folders and sub folders essentially

35
Q

How many PUT/COPY/POST/DELET requests do you get per S3 prefix?

A

3,500

36
Q

How many GET/HEAD requests per second, per prefix?

A

5,500

37
Q

Can you get better performance by spreading your reads across different S3 prefixes?

A

Yes

38
Q

If you use SSE-KMS for S3 will uploading/downloading count towards your KMS quota?

A

Yes

39
Q

What is the KMS quota limit?

A

This is region specific and can either be the following:

1) 5,500
2) 10,000
3) 30,000

40
Q

Can you request a quota increase for KMS?

A

No

41
Q

How big does a file have to be where you SHOULD start using multipart uploads for S3?

A

100mb

42
Q

What size does a file have to be where you HAVE to start using multipart uploads for S3?

A

5GB

43
Q

What is the download version of S3 Multipart Uploads called?

A

S3 byte-range fetches

44
Q

When you do S3 Replication, are the objects in the bucket automatically replicated?

A

No

45
Q

When you do S3 Replication, are objects with delete markers replicated by default?

A

No

AWS - Certified Solutions Architect - Associate (SAA-C03) (17 decks)

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