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AWS Certified Solutions Architect Associate > AWS Certified Solutions Architect Associate > Flashcards

AWS Certified Solutions Architect Associate Flashcards

1
Q

Is S3 an object based storage service?

A

Yes

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2
Q

In S3, do you have to be concerned about file systems or disk space?

A

No

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3
Q

What is a data storage architecture that manages data as object as opposed to file systems for block storage?

A

Object Storage

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4
Q

What is an S3 Object?

A

Objects contain your data. They are like files.

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5
Q

What do S3 Objects consist of?

A
  1. Key - the name of the object
  2. Value - the data itself made up of a sequence of bytes
  3. Version ID - the version of the object when versioning is enabled
  4. Metadata - additional information attached to the object
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6
Q

How much data can you store in a S3 Object?

A

0 bytes to 5 Terabytes

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7
Q

Does a S3 bucket name have to be unique like a domain name?

A

Yes

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8
Q

What do S3 buckets hold?

A
  1. Objects

2. Folders which in turn hold objects

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9
Q

What are the S3 Storage Classes?

A
  1. Standard (default)
  2. Intelligent Tiering
  3. Standard Infrequently Accessed (IA)
  4. One Zone IA
  5. Glacier
  6. Glacier Data Archive
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10
Q

What is the availability and durability of the Standard S3 Storage Class?

A

Availability - 99,99%

Durability - eleven 9’s

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11
Q

How many AZs is Standard S3 Storage Class replicated across?

A

At least 3

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12
Q

What S3 Storage Class is fast and cheaper than the Standard Storage Class if you access files less than once per month?

A

Standard Infrequently Accessed (IA)

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13
Q

Is there a charge for accessing Standard Infrequently Accessed files?

A

Yes, there is a retrieval fee.

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14
Q

How much less is Standard Infrequently Accessed file storage than Standard Storage?

A

50% less because of reduced availability

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15
Q

Which Storage Class is still fast, but objects exist in only one AZ?

A

One Zone IA

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16
Q

What is the Availability of One Zone IA?

A

99.5%

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17
Q

How much cheaper is One Zone IA than Standard S3 Storage?

A

20% lower (reduced durability)

18
Q

Can data get destroyed on a One Zone IA?

A

Yes

19
Q

Is there a retrieval fee for One Zone IA?

A

Yes

20
Q

What is a long-term cold storage class?

A

Glacier

21
Q

What are the advantages and disadvantages of Glacier?

A

Advantage - very cheap

Disadvantage - retrieval can take minutes to hours

22
Q

What is the lowest cost storage class?

A

Glacier Data Archive

23
Q

What is the data retrieval time for Glacier Data Archive?

A

12 hours

24
Q

What Storage Class used Machine Learning to analyze object usage and determine the appropriate storage class?

A

Intelligent Tiering

25
Q

What Storage Class moves data to the most cost-effective access tier without any performance impact or added overhead?

A

Intelligent Tiering

26
Q

What are the S3 availability and durability guarantees?

A
  • Platform is built for 99.99% availability
  • Amazon guarantees 99.9% availability
  • Amazon guarantees eleven 9’s of durability
27
Q

Are all new buckets private when created by default?

A

Yes

28
Q

Access control is configured using what two things?

A

Bucket Policies - to define complex rule access

Access Control Lists - simple way of granting access

29
Q

Traffic between your local host and S3 is achieved via

A

SSL/TLS

30
Q

What is Encryption at Rest

A

Server Side Encryption (SSE)

31
Q

Does Amazon help you encrypt object data with SSE?

A

Yes

32
Q

Who manages all of the S3 managed keys with SSE?

A

Amazon

33
Q

What is S3 handles the key and uses AES-256 Algorithm called

A

SSE-AES

34
Q

What is S3 envelope encryption, AWS KMS and you manage the keys

A

SSE-KMS

35
Q

What is customer provided key and you manage the keys

A

SSE-C

36
Q

What is it called when you encrypt your own files before uploading them to S3?

A

Client-Side Encryption

37
Q

With S3 Data Consistency, when is a new S3 object that has been put to S3 available for read action

A

immediately

38
Q

With S3 Data Consistency, how long before an overwrite (put) or delete objects (deletes) are available?

A

It takes time for S3 to replicate versions to AZ. If you were to read immediately, S3 may return an old copy. You need to generally wait a few seconds before reading.

39
Q

Can you automatically replicate objects from one region to another?

A

Yes - it is called Cross Region Replication or CRR

40
Q

Can you use Cross Region Replication with a different AWS account?

A

Yes

41
Q

What do you have to have turned on with both the source and destination buckets to use Cross Regional Replication (CRR)?

A

versioning

42
Q

Explain S3 Versioning

A
  • Store all versions of an object in S3
  • Once enabled it cannot be disabled, only suspended on the bucket
  • Fully integrates with S3 Lifecycle rules
  • MFA delete feature provides extra protection against deletion of your data

AWS Certified Solutions Architect Associate (1 decks)

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