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1. AWS ACloud Guru Summaries remix > S3 > Flashcards

S3 Flashcards

1
Q

Is S3 object or block based storage?

A

Object

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2
Q

What is the S3 availability SLA

A

99.9

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3
Q

What is the guarantee durability of S3

A

99.999999999%

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4
Q

What are the S3 tiers?

A

S3S3 - IAS3 One Zone -IAGlacier

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5
Q

What storage solution would you use for data archive?

A

Glacier

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6
Q

What is the proper format for a s3bucket name?

A

Https://s3-region.amazonaws/bucketname

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7
Q

What are the S3 object permissions?

A

OwnerAccountsPublic

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8
Q

How to control access to buckets?

A

ACLbucket policy

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9
Q

You’ve enabled bucket cross-region replication. There are existing files there and you add some new files. When you check the destination, only the new files are present. Why?

A

Existing files on sources are not replicated after replication is enabled. Only new or changed files will be present at the destination

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10
Q

You manually copy over items from one bucket to another. Items at the source were publically available, but are not at the destination. Why?

A

The object is copied but not permissions.

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11
Q

You’ve deleted an object in your source bucket. You observe this activity replicated to the destination bucket. You then go into versioning and delete the deletion marker. Will this change be replicated?

A

No

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12
Q

True or false: You can replicate buckets in the same region

A

false

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13
Q

You delete an object in a bucket. Will that deletion marker in versioning be replicated?

A

Yes

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14
Q

True or false. A new bucket is publically available and permissions are wide open.

A

false

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15
Q

What is an S3 lifecycle policy?

A

A mechanism to transition data to tiered storage.

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16
Q

What is the max file min file size eligible for transition?

A

128Kb

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17
Q

Do you need versioning enabled to use a lifecycle policy?

A

No

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18
Q

Can lifecycle policies capture versions also?

A

Yes

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19
Q

You have just setup a lifecycle policy. You notice not all files were transitioned to the next tier. Why?

A

The files creation date must be older than 30 days and the file larger than 128KB

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20
Q

What is cloudfront?

A

It is a CDN content delivery network

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21
Q

What does a CDN do?

A

It stores and delivers data to users based on geographic location to ensure reduced latency

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22
Q

What is an edge location?

A

A location where content will be cached?

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23
Q

Does an edge location have to be in a defined region?

A

No

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24
Q

What is an origin?

A

Data source, S3 bucket EC2 instance or ELB

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25
What is a distribution?
A collection of edge locations
26
What are the types of distributions?
Web and RTMP
27
Are edge location read only?
No, you can write and it will replicate to origin
28
What determines a time data will live in the edge location?
TTL
29
Can you clear data from edge cache?
Yes, but at a cost
30
How do you secure S3 buckets?
Bucket policies and S3
31
You want to ensure auditing of your buckets are enabled but are concerned the logs will take up to much space. Can the logs be redirected to another bucket?
Yes
32
What are the three types of server-side encryption at rest?
S3 managed keys - SS3-S3AWS Key mgmt - SSE-KMSserver-side encryption with customer-provided keys - SSE-CClient-side encryption
33
What encryption does S3 manage keys - SS3-S3use?
AES256
34
You need to ensure encryption is enabled on your S3 bucket. Governance has indicated its required to capture an audit trail of all encrypts and decrypts with the key. What type of encryption would you recomend
AWS Key mgmt - SSE-KMS
35
You need to ensure encryption is enabled on your S3 bucket. Governance has indicated its required to capture an audit trail of all encrypts and decrypts with the key. What type of encryption would you recommend
AWS Key mgmt - SSE-KMS
36
You need to ensure encryption is enabled on your S3 bucket. You want to use an existing key What type of encryption would you recommend
AWS Key mgmt - SSE-KMS
37
You need to ensure encryption is enabled on your S3 bucket. You want to manage the keys yourself. What type of encryption would you recommend
server side encryption with customer provided keys - SSE-C
38
What is client side encryption?
Data is encrypted then uploaded to S3
39
What is AWS storage GW?
a software service connects on-prem storage to AWS cloud storage
40
What are the five types of storage gateways?
File gateway (NFS)Volume gateway (iSCSI)-stored volumes-cached volumesVTL gateway (VTL)
41
What type of storage gateway would you use for file storage?
File gateway
42
What type of storage gateway would you use for installing an OS?
Volume gateway (iSCSI)
43
What are the two types of volume gateways?
stored volumes and cached volumes
44
You need to a storage gateway that will ensure all data that may be required is readily available. Which would you choose?
stored volumes
45
You need a storage gateway but have limited disk space on-prem, but need to ensure any frequently requested data is readily available. Which storage gateway should you use?
cached volumes
46
What is the ma size for cached volume gateway storage?
32 TB
47
When would you use file gateway
flat files
48
What would you use volume gateway for?
block based storage
49
What is snowball?
AMS import export service
50
What are the three types of snowballs?
snowballsnowball edgesnowmobile
51
What are the characteristics of the snowball service?
Disk appliance80 TB max
52
What are the security features of a snowball?
256 bit encrypt.TPM ensures security and chain of custody
53
What are the characteristics of snowball edge
100 TBContains compute as well as storage
54
What are the use cases for snowball edge
import/exporttemp storage or support workloads in remote sites
55
What are the characteristics of snowmobile?
45 foot container100 PB storage
56
What is S3 acceleration?
Leverages cloudfront edge locations to accelerate S3 uploads. Distinct URL
57
Describe the S3 consistency model
Read after write consistency for PUTS of new objectsEventual consistency for overwrite PUTS and DELETES
58
What are the core fundamentals of S3?
key (name)Value (data)version ID (metadata)MetadataSubresources - ACL and torrent
59
What is s3 versoning?
stores all versions of an object ( including writes and deletes)
60
You've enabled versioning. Can it be disabled?
No. only suspended
61
What can versioning integrate with to provide enhanced data protection?
lifecycle rules
62
You have an S3 bucket and want to provide an additional layer of protection from accidental deletion?
MFA delete
63
True or False.Newly created buckets are private
True
64
What type of in transit encryption does S3 use?
SSL/TLS
65
What are the characteristics of the file gateway service?
VM deployed onsiteFiles stored as objects in S3 bucketsperms are stored in the S3 user-metadata of the objectObjects can be managed like any other S3 object
66
What are the characteristics of the stored volume volume gateway service?
VM deployed onsiteOnprem virtual disk that backs up to AWSpresents an application with disk volumesISCSI block-based storageUses on-prem storagecan be synchronously backed up with snapshot and stored on EBS
67
What is the max size of store volumes?
16 TB
68
Which storage gateway service retains 100% of all data onsite?
Stored volume gateway
69
What are the characteristics of cached volume gateway service?
caches frequently accessed data on-siteminimizes on-prem storageMax 32 TBiSCSIStored in S3
70
What are the characteristics of tape gateway
leverage existing tape backuppreconfigured media changer and tape drives
71
Can you install a DB in S3?
No. Its object based not block based
72
What is the S3 bucket url format?
region.amazonaws.com/bucket name
73
S3 min and max files size?
0-5TB
74
What is the consistency of puts for S3
read after write consistency
75
What is the consistency for overwrite of PUTS and deletes for S3?
Eventual consistency
76
What serivce will provide an HTTP 200 status code and when?
S3 when uploading files
77
What are the attributes of S3 versioning?
Stores all versionsgreat for backupsversioning cannot be disabled, only suspendedIntegrates with lifecycle rulesMFA delete provides and additional layer of security
78
What is required to enable cross region replication?
versioning on both sidesunique regions
79
When performing cross region replication are delete markers replicated?
yes
80
When performing cross region replication are existing files in the bucket previous to configuration replicated?
no
81
Will deleted individual version or delete markers be replicated?
No
82
Are delete markers replicated
yes
83
Can you configure multiple bucket replication?
no
84
What are the two types of cloudfront distributions?
Web and RTMP
85
What is RTMP used for
media streaming
86
What type of locations cache content in cloudfront
Edge locations
87
What are the key components of cloud front?
Edge locationsOriginDistributions
88
S3 EC2 instances, ELB or R53 can all be what in relation to Cloudfront?
Origins
89
What is a distribution made up of?
Edge locations
90
Are Edge locations writable?
Yes
91
What happens whe an item is written to an edge location?
It is sent to the origin
92
Objects in the distribution are cahce for the life of what?
TTL
93
Will you be charged to clear objects in a cloudfront distribution?
Yes
94
By default all buckets are public?
No
95
What can you use to secure buckets?
Bucket policies and ACLs
96
What service utilizes the edge network to accelerate uploads to S3?
S3 transfer acceleration
97
Can you have two buckets with the same name?
No. S3 is a universal namespace and names must be globally unique
98
What does read after write consistency mean?
The file is available immediately after writing
99
What S3 classes changes a retrieval fee?
S3 IA
100
What S3 class is lowest cost and does not have redundancy?
S3 one zone - IA
101
How is S3 date encrypted in transit?
SSL/TLS
102
What snowball version has compute services?
Snowball edge
103
What aws service would be best for a static website?
S3

1. AWS ACloud Guru Summaries remix (8 decks)

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