Aws Developer Associate pt4

34 cards·by luc-yahoo

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RCU strong =

???

SQS default visibility timeout

30s

Is CloudFront tied to a region?

Is DynamoDB tied to a region?

Yes

Step functions are written in

JSON

IAM policy doc must contain at least 3 things:

Effect, Actions, Resources

SSE-KMS: AWS manages ___ and you manage ___

aws=data key, you=master key

SSE-S3: AWS manages:

both data key and master key

Example API Gateway URL looks like

https://3833445d.execute-api.eu-west-3.amazonaws.com/dev/chapters

CodePipeline stages contain ___

actions

Using Elastic Beanstalk, one environment includes:

1 and only 1 application version

moving REST API / NGINX / java app to aws with no changes:

Elastic Beanstalk

WCU for 180 writes per minute at 9KB

180 per minute = 3 per seconds, 1 WCU = 1 KB, so 3 * 9 = 27 WCU

RCU for 10 items/sec at 6.6KB

6.6 KB gets rounded to 8 KB, one RCU for eventually consistent is two reads per second of 4 KB: (10/2) * (8/4) = 10

Strongly consistent RCU for 1200 per minute at 6KB

1200 per minute = 20 per seconds. 6 KB gets rounded to 8 KB. 1 RCU = 4 KB, 2 RCU = 8 KB. 20 * 2 RCU = 40 RCU

customize your Elastic Beanstalk environment using Elastic Beanstalk Configuration files in which dir?

.ebextensions, with a .config extension

Self-service password change is a feature of

Cognito user pools

STS is

temporary, limited-privilege credentials for IAM or federated users (users you authenticate)

STS example api

AssumeRole, AssumeRoleWithSAML, AssumeRoleWithWebIdentity

How to link events from Dynamo to Lamba

event source mapping in Lambda, AWSLambdaDaynamoDBExecutionRole

Allow multiple users to synchronize and collaborate in real time on shared data

AppSync

Simple & low cost SQL statements on S3 with

S3 Select

Step Functions

coordinate multiple AWS services into serverless workflows so you can build and update apps quickly

Lambda function which requires access to a MySQL RDS instance that is in a private subnet

Configure Lambda to connect to your VPC

Should a Lambda be in a VPC?

yes if needs anything else in the vpc. also NAT if it needs anything public

The unreserved concurrency can't go below

100

SWF is

state tracker and task coordinator service (but doesn't provide serverless orchestration)

ECS Spread configuration helps maximize

availability

true/false: ECS Random configuration will schedule only on instances with enough resources

true

Automatically handle multi-container ECS with

Beanstalk

RCU calc step 1:

avg item size rounded up to next 4k

RCU calc step 2:

rcu/item = size from step 1 / 2

RCU calc step 3:

rcu/item * items/sec from step 2

Queries on a global index support ___ consistency only

eventual