AWS Solutions Architect - Associate

what do ENIs do?

gives EC2 network connectivity

Where does EBS encryption leverage its keys from?

KMS (AES-256)

What is EBS volume IO1/IO2 great for?

Database workloads

EFS is only compatible with..?

Linux AMI

Network Load Balancer:

forwards TCP/UDP traffic to your instances

only has 1 static IP per AZ

what port does the Gateway Load Balancer use?

GENEVE (port 6081)

What do you need to do to utilize Storage Auto Scaling?

set a Maximum Storage Threshold

at-rest encryption for RDS

AWS KMS

in-flight encryption for RDS

TLS-ready

what is Amazon Elasti-cache?

it helps reduce load off databases for read intenstive workflows

what is the difference between Redis and Memcached?

Redis is multi-AZ, read replicas, and backup/restore features

Memcache uses multi-node for partitioning of data

what is an Alias record used for?

an Elastic Load Balancer (ever changing IPs)

is Elastic Beanstalk fully managed?

Yes

Does SQS scale automatically?

Yes

Amazon Data Firehose:

near real-time data streaming from source into target destination

CloudFront uses what scripting language?

Javascript. Used for high-scale, latency-sensitive CDN customization only for viewer request and response

Lambda@Edge’s scripting language:

Node.js, Python - used to change CloudFront requests and responses: viewer request, origin request, origin response, and viewer response

Since RDS Proxy is not publicly accessible, what must be deployed in the VPC first?

A Lambda function

DynamoDB - what is unique?

NoSQL, fast and consistent performance (single-digit millisecond), you can rapidly evolve schemas

what is DAX?

DynamoDB Accelerator - microseconds latency for cached data

Use case for Time to Live (TTL):

web session handling

key words for Amazon Cognito:

hundreds of users, web users

For Elasticache, what must be done before it can be leveraged?

Requires some application code changes

What is Document DB?

another NoSQL - it’s the Aurora version of MongoDB

Key words for Amazon KeySpaces

Apache Cassandra - NoSQL

What should you use Athena for?

Analyzing data in S3 using serverless SQL

Detail about Lake Formation

Centralized permissions

Managed Service for Apache Flink

Can be read from Kinesis Streams, but cannot be read from Amazon Data Firehose

Customizing the pronunciations of words in Amazon Polly

lexicons

What can AWS WAF be deployed on?

ALB, API Gateways, CloudFront, AppSync GraphQL API, and Cognito User Pool

When would we use the Internet Gateway?

when we want public subnets to auto-assign public IPs

Gateway Endpoints support what 2 AWS services?

DynamoDB and S3

For a site-to-site VPN, what 2 components do we need?

Virtual Private Gateway (VGW) and Customer Gateway (CGW)

What is something to note about Direct Connect?

lead times are often longer than 1 month to establish a new connection