learn-aws's Introduction

learn-aws

Preparing for AWS certifications

TODO

Levels of support: Enterprise, Business, Developer, Basic (free)
EC2
- Spot instance
  - Termination scenarios
- Host vs Dedicated vs Default
- ENI cold attach (when the instance is being launched)
S3
- Multi-part uploads (benefits)
- Put - S3 Request Headers
- key namespace
DynamoDB
- multi-az deployment
- Partition key
- Table
- ProvisionedThroughputExceededException
- Local Secondary Indexes
Termination policy (Autoscaling)
Direct Connect
SQS
- VisibilityTimeout (12 hours)
- DelayedSeconds
- ReceiveMessageWaitTimeSeconds
- FIFO! / LIFO?
AMIs
- Launch permissions (who can launch this AMI), user-defined tags, s3 bucket permissions
WAF (Web Application Firewall)
VPN connections (on-premise to VPC)
EMR
- Core and Task nodes
Storage Gateway
- VTL
Import/Export Service

Owner refers to the identity and email address used to create the AWS account

VPC Peering does not support edge to edge routing
The names of the AZs are randomly applied, so "eu-west-1b" is not necessarily the same physical location for all three accounts.
S3 minimum size: 0 bytes
Entire VPC can be set to dedicated hosting
- Must recreate VPC if you want default hosting
S3, SQS & DynamoDB are already built in a fault tolerant fashion, you do not need to provision these services across multiple availability zones. Therefore the correct answers are RDS and EC2
A placement group can span peered VPCs
You can have one Elastic IP (EIP) address associated with a running instance at no charge (multiple EIPs on one instance incurs a charge)
Route53 supports the following DNS record types: NAPTR & SPF
Default network interface (eth0) of an instance
Make objects in S3 public by either the object ACL or bucket policy (recommended)