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AWS SAA-CO3 > S3 > Flashcards

S3 Flashcards

(52 cards)

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1
Q

What is S3?

A

Simple Storage Service

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2
Q

Where are files stored in S3?

A

Buckets (similar to folders)

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3
Q

What is the maximum object size in S3?

A

5 TB

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4
Q

What is the minimum object size in S3?

A

0 bytes

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5
Q

Is an S3 bucket name globally unique across all AWS accounts?

A

Yes, namespace already in use are not available.

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6
Q

S3 URLS follow a naming convention. Is this correct?
Https://bucketname.s3.region.amazonaws.com/keyname

A

Correct. The URL always has the bucket name, region, and keyname (filename).

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7
Q

What is the success code when uploading a file to an S3 bucket?

A

HTTP 200

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8
Q

What is a key in S3?

A

The name of an object (filename). An example is picture.jpg.

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9
Q

What is the value in S3?

A

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

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10
Q

What is a version ID in S3?

A

Multiple versions of the same object

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11
Q

What is metadata?

A

Data about the data you are storing.
An example is content-type, last modified, etc.

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12
Q

True or false: S3 is data that is spread across multiple devices and facilities to ensure availability and durability.

A

True

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13
Q

What is the guaranteed uptime of S3 availability?

A

x4 nines
99.95% - 99.99%

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14
Q

What is the guaranteed durability for data stored in S3?

A

x11 nines
99.999999999%

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15
Q

What is S3 Standard?

A

1) Data stored redundantly across 3 or more availability zones
High availability of 99.99%
Durability of 99.999999999%

2) Designed for frequent access

3) Suitable for most workload
Websites, content distribution, mobile/gaming apps, and big data analytics.

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16
Q

Is there tiered storage in S3?

A

Yes, they are known as S3 classes.

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17
Q

True or false: you can install an OS or run a DB in S3?

A

False. It’s only for storing files.

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18
Q

Is storage in S3 limited?

A

No, it’s unlimited.

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19
Q

True or false: S3 buckets uses an universal namespace.

A

True

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20
Q

What level does an object ACL work on?

A

The individual object level

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21
Q

What level does a bucket policy work on?

Study These Flashcards
A

The entire bucket level

22
Q

True or false: creating a bucket namespace is at the global not the regional level.

Study These Flashcards
A

True. The bucket namespace is universal and spans all aws accounts.

23
Q

What are the three steps to make an object publicly accessible?

Study These Flashcards
A

Enable the following:
Bucket Level
1) Under bucket settings: Uncheck Block Public Access
2) Under Object Ownership, choose ACLs enabled
Object Level
3) Under the object, choose Make public

24
Q

Are S3 buckets private by default?

25
True or false: S3 can be used to host only static websites.
True. S3 cannot host dynamic websites, such those that require database connections.
26
What is S3 automatic scaling?
A feature that automatically scales to high request rates.
27
S3 bucket configuration is encompassed in what type of file?
JSON Javascript object notation
28
What needs to be enabled in order to host a static website?
Static website hosting
29
What are the steps to creating a static website?
1) Enable static website hosting 2) Specify the html home file (index page) 3) Enable public access by applying a bucket policy 3) Upload the html files - home page file should match in step 2
30
What is S3 versioning?
Multiple versions of an object within S3. This needs to be enabled.
31
True or false: you can disable versioning once it's enabled.
False. It can only be suspended.
32
How can you see all the versions of an object?
Select list versions to enable it
33
Will a previous version of an object still be publicly available?
No, by default, previous versions do not retain public access. You'll need to make the object public.
34
What is a delete marker?
A placeholder for a versioned object when the object is deleted. It behaves as if the object is deleted.
35
Can S3 versioning use MFA?
Yes
36
What is the reason for versioning?
It's a backup tool.
37
What are the seven S3 classes?
1) S3 Standard 2) S3 Intelligent Tiering 3) S3 Standard IA (Infrequent Access) 4) S3 one-zone IA (Infrequent Access) 5) S3 Glacier Instant Retrieval 6) S3 Glacier Flexible Retrieval 7) S3 Glacier Deep Archive
38
What is S3 Standard class?
Features: - Low latency/high throughput - Durability of x11 9s across multiple AZ - Availability of x4 9s - Supports SSL data in transit and encryption of data at rest - Life cycle management for automatic migration of objects to other S3 storage class
39
What is S3 Intelligent Tiering class?
This moves data to the most cost-effective tier based on how frequently you access each object. - Uses AI & machine learning to see how often data is accessed and can move objects around to different S3 classes to save money. - 99.9% Availability - x11 9s durability - Moves data into the tiers: frequent, infrequent, and archive instant access
40
What is S3 Standard IA (Infrequent Access) class?
This is for data that is accessed less frequently but requires rapid access when needed. - Low per GB storage and per GB retrieval price. - Ideal for long-term storage, backups, and data store for DR files. - Can use life cycle management to automatically transition objects between S3 classes.
41
What is S3 one-zone IA (Infrequent Access) class?
This is for data that is accessed less frequently but requires rapid access when needed. Only redundant within a single AZ. - For non-critical data - Costs 20% less than S3 Standard-IA - Low per GB storage and per GB retrieval price. - Ideal for storing secondary backup copies of on-prem data or easily re-creatable data. - Can use life cycle management to automatically transition objects between S3 classes. - Availability is only 99.95% - Durability is x11 9s, but still within only one AZ - Data can be afford to lose
42
If data is in the S3 Intelligent tiering class isn't accessed for 30 days, where will this data be automatically moved?
Infrequent Access tier
43
If data is in the S3 Intelligent tiering class isn't accessed for 90 days, where will this data be automatically moved?
Archive Instant access tier
44
If using S3 Intelligent tiering and objects do not need immediate access and have not been accessed for 180 days, where will it be moved?
Deep Archive Access tier
45
Are there retrieval charges for S3?
No
46
How many Glacier options are available?
Three - Glacier Instant Retrieval - Glacier Flexible Retrieval - Glacier Deep Archive
47
What is the cheapest S3 storage class?
Glacier Deep Archive
48
What is Glacier Instant Retrieval?
This is for long-lived data that is rarely accessed and requires retrieval in milliseconds. - Availability is 99.9% - Durability is x11 9s - Minimum 128KB object size
49
What is Glacier Flexible Retrieval?
For achived data that is accessed 1-2 times a year and retrieved asynchronously. Flexible in retrieving data at no cost so it can be accessed in mins to 12 hours. - For backups or DR use cases - Availability is 99.99% - Durability is x11 9s
50
What is Glacier Deep Archive?
Supports long-term retention and digital preservation for data that is accessed 1-2 times a year. Typical for highly regulated industries. - Retrieval time is 12 hours, bulk retrieval is 48 hours - Data stored across three AZs - Durability is x11 9s
51
Which S3 class is the most expensive?
S3 Standard
52
Of the three Glacier classes, which is the most expensive?
S3 Instant Retrieval

AWS SAA-CO3 (4 decks)

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