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AWS SAA-C03 > TD Exam 4 - Long review > Flashcards

TD Exam 4 - Long review Flashcards

1
Q

What kind of store is instance store

A

Block storage

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2
Q

What EC2 storage gives the best performance

A

Instance store

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3
Q

Is instance store included in price

A

Yes

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4
Q

When are instance store volumes attached

A

At launch

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5
Q

Can an instance have more than one instance store

A

Yes

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6
Q

Where are instance store voumes

A

On an EC2 host

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7
Q

Are instance store volumes persistent

A

No

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8
Q

Are instance store volumes resilient

A

No

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9
Q

How can you have instance volume that is isolated from instance lifecycle

A

EBS

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10
Q

If you need Resilience and your app has built-in replication

A

it depends, but instance store is an option

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11
Q

What should you use if you need super-high performance for storage

A

Instance store

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12
Q

What storage should be preferred if cost is an issue (for an instance)

A

Instance store

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13
Q

What is cheap EBS

A

ST1 or SC1 (disk-based)

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14
Q

What os good EBS for throughput, streaming

A

ST1

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15
Q

Can you use ST1 or SC1 EBS for boot

A

No

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16
Q

What are high-performance EBS up to 16k IOPS

A

GP2/3

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17
Q

What is up to 64k IOPS EBS

A

IO1/2

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18
Q

How can you get up to 260k IOPS from EBS

A

RAID0 (need optimized EBS and Iinstance)

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19
Q

How can you gete more than 260k IOPS

A

Instance store

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20
Q

What is Provisione dIOPS SSD

A

EBS, io1/2, consistent low latency and jitter

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21
Q

What are ACID and BASE

A

DB transation models

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22
Q

What is the focus of ACID

A

Consistency

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23
Q

What is the focus of BASE

A

Availability

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24
Q

What is RDS, ACID or BASE

A

ACID

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25
Q

What is DynamoDB by default, ACID or BASE

A

BASE

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26
Q

Can you have ACID DynamoDB

A

Yes, with dynamodb transactions

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27
Q

What is ACID usually

A

RelationalW

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28
Q

hat is BASE usually

A

NoSQL

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29
Q

What are the steps to have S3 websote hosting

A

Allow public access
Enable static website hosting
Update bucket policy to allow all principals to get object

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30
Q

Where do you enable CORS, on the bucket that has the requester html, or the one that has the requested html

A

Requested html bucket

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31
Q

What do Launch Configurations and Templates do

A

Define EC2 configuration in advance

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32
Q

Are Launch Configurations and Templates editable

A

No, but you have versions for Launch Templates

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33
Q

Are versions available for Launch Configurations

A

No

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34
Q

Can Launch templates be used elsewhere than ASG

A

Yes, from CLI and UI

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35
Q

Can Launch Configurations be used elsewhere than ASG

A

No

36
Q

Whare are you responsible for renewing certificates in ACM

A

When you imported them

37
Q

Does ACM automatically renew certificates

A

If it generated it, yes

38
Q

Can ACM deploy certificates to anything

A

No, only to supported services (eg not EC2)

39
Q

What kind of service in ACM

A

Regional service

40
Q

Can ACM certificates leave the region theyr are generated or imported in

A

No

41
Q

Can you use a certificate from another region for an ALB in another region

A

No, the certificate must be in the same region as the ALB
Except CloudFront, US-east-1

42
Q

What region are global services (like CloudFront) from the perspective of ACM

A

US-EAST-1

43
Q

How do ACM certs make it to edge locations

A

The distribution takes it from us-east-1 and sends it to the edge location

44
Q

How many ENIs do EC2 have by deafult

A

One, it’s primary

45
Q

Can an instance have ENIs in different subnets

A

Yes, but they have to be in the same AZ

46
Q

Can you have source/destination checks on ENIs

A

Yes

47
Q

Can you detach and move ENIs

A

Yes, but only secondary ENIs

48
Q

How many DNS names does an instance have

A

Can have one for its public IP
One for a public IP

49
Q

What does the public IP DNS name of an instance resolve to

A

Private IP inside subnet
Public IP outside

50
Q

What happens when you assign an elastic IP

A

It removes the other public IP

51
Q

How can you do something sneaky with MAC-based licensing

A

Use secondary ENI MAC address and move it between instances

52
Q

Does an instance lose its public IPv4 address when it stops and start

A

Yes, unless it has an elastic public IP

53
Q

What does Requester pays do

A

Requester pays for cost of request and data download

54
Q

What is AWS Application Migration Service

A

Automated lift and shift solution

55
Q

What are the steps when using AWS Migration service

A

Install AWS Replication Agent
Replicate source servers to AWS
Perform acceptance tests on servers
Execute cutover instance

56
Q

What is the IP for metadata

A

169.254.169.254

57
Q

How can apps on instances get an instance’s public IP

A

instance metadata

58
Q

Is instance metadata encrypted or secured

A

No

59
Q

Do ASGs need Scalng policies

A

No

60
Q

What is manual scaling

A

Adjust manually min, max and desired

61
Q

What is simple scaling

A

Set alarm and do action based on it

62
Q

WHat is step scaling

A

Scale based on step adjustments
Eg set CPU amounts in steps, say how many CPUs to add

63
Q

What is target tracking

A

Define ideal value
Then it adjusts

64
Q

Can you scale based on an SQS queue length

A

Yes

65
Q

What value does scaling adjust

A

Desired

66
Q

What are ASG Lifecycle hooks

A

Allow you to defin custom actions on instances during ASG actions

67
Q

What is AWS Health

A

It provides ongoing visibility into your resource performance and the availability of your aws services and accounts

68
Q

What can you use to detect and react to AWS Health events

A

EventBridge

69
Q

What does AWS Service health dashboard do

A

Shows public events that may affect several customers in particular regions
Not events related to specific EC2 instances on individual AWS accounts

70
Q

What does AWS Personal health dashboard do

A

Visibility into your resource performance and the availability of your AWS services and accounts

71
Q

For an ALB, how many listeners can you have on a given port

A

Only one

72
Q

Can a listener on ALB support mutliple domains

A

Yes

73
Q

What is ElastiCachr

A

In-memory database, high-performance

74
Q

What are the 2 engines for ElastiCache

A

Redis
Memcached

75
Q

What kind of workload is good for elasticache

A

Read heavy workloads with low latency requirements

76
Q

What is 2 advantages of Elasticache

A

Reduces database workload
Can be used to store Session Data so servers are stateless

77
Q

Does ElastiCache require code changes

A

yes

78
Q

Should you use ElastiCache with DnamoDB

A

No

79
Q

Which elasticache engine supports advanced data structures

A

Redis

80
Q

Which elasticache engine supports Multi-AZ replication

A

Redis

81
Q

Which elasticache engine supports backup and restore

A

Redis

82
Q

Which elasticache engine is multithreaded

A

Memcached

83
Q

Which elasticache engine supports transactions

A

Redis

84
Q

What is AWS COnfig used for

A

To evaluate the configuration settings of your AWS resources

85
Q

Can AWS Config send events to Amazon EventBridge

A

Yes

86
Q

What is an OAI (Origin access identity)

A

An identity, not a role or a user

87
Q
A

AWS SAA-C03 (18 decks)

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