AWS Certification Preparation

AWS Certified Solutions Architect – Associate Exam Preparation Notes

What's New in AWS Certification:

            https://aws.amazon.com/certification/?nc2=h_ql_le

AWS Certification

            https://aws.amazon.com/certification/certification-prep/

S3     - Simple Storage Service (S3)

SSM    - System Manager

ENI    - Elastic Network Interface

ECS    - Elastic Container Service

ECR    - Elastic Container Registry

ARN    - Amazon Resource Name (ARN)

RAM    - Resource Access Manager (AWS RAM)

AMI    - Amazon Machine Image

SNI    - Server Name Indication

ASG    - Auto Scaling Group

Edge Locations:

            Are AWS data centers (point of presence) located around the world designed to give low latency access to two AWS Services:

                        o> Route 53 -  DNS lookups

                        o> CloudFront:

                                    . Content Delivery Network (CDN)

                                    . Cached content, streaming distribution, acceleration

EC2 -  Elastic Compute Cloud (EC2)

VPC -  Virtual Private Cloud

            Logically isolated network in the AWS cloud

            Control of network architecture

            Enhanced security

            Internetwork with other organization

            Elastic IP (public IPs)

            Enable hybrid cloud (site to site VPN)

            VPC cost =0$

            VPN cost is $0.05/hr

            A VPC is an isolated portion of the AWS cloud populated by AWS objects, such as Amazon EC2 instances. Use the Classless Inter-Domain Routing (CIDR) block format to specify your VPC's contiguous IP address range, for example, 10.0.0.0/16 You can not create a VPC larger than /16

           

ELB - Elastic Load Balancing(ELB)

            Region wide load balancer

            Can be used internally or externally

            SSL Termination and processing

AWS Database Options:

            RDS - Relation database service

            Non RDS -  Non Relation database

            In-Memory - Redis

            Data Warehousing -

            http://aws.amazon.com/running_databases/

Amazon Lambda:

• A compute Service
• Event - Driven Compute service
• Runs code triggered by events
• Does not require an instance
• Does not require an infrastructure
• Stateless, request-driven code called Lambda functions

Triggered by events:

PUT is S3

Write to a DynamoDB table

Transition in an EC2 instance

Message in an SQS queue or Kinesis stream

Any API call or resource transition

Amazon Simple Services:

            SES - Simple Email Service

                        . Cost effective bulk email service

                        . Cost based on number of emails sent

                        . Outbound-only email-sending service

                        . Leverage Amazon email reputation

                        . Initially limited to 10,000 emails/day

            SQS - Simple Queue Service

                        . Fast, reliable, and scalable

                        . Unlimited messages and queue size

                        . Payload upto 256KB

                        . Billed in chunks of 64Kb payload

                        . First 1 million request are free

            SNS    - Simple Notification Service

                        . Push messaging service

                        . HTTP/HTTPS

                        . Email

                        . Email-JSON

                        . SMS

                        . Amazon SQS queues

• Website for resources and pricing

            www.cdn.awsnow.info

Elastic Load Balancers - SSL Certificates

•     Classic load balancer
• Support only one SSL certificate
• Must use multiple CLB for multiple hostname with multiple SSL certificates

•     Application Load Balancer
• Support multiple listeners with multiple SSL Certificates
• Users Server Name Indication (SNI) to make it work
• 
  
• Application Load Balancer
• Supports multiple listeners with multiple SSL certificates
• Use Server Name Indication (SNI) to make to work
• Auto Scaling Group
• The load on your websites and application can change
• You can create and get rid of servers very quickly

• The goal of an Auto Scaling Group (ASG) is :
• Scale out (add EC2 instances) to match an increased load
• Scale in (remove EC2 instances) to match a decrease load
• Ensure we have a minimum and maximum number of machines running
• Automatically Register new instances to a load balancer

For more Information please see below link

https://docs.aws.amazon.com/autoscaling/ec2/userguide/as-scale-based-on-demand.html

ASGs have the following attributes

• A launch configuration
• AMI instance type
• EC2 User Data
• EBS volumes
• Security Group
• SSH Key pair
• Min Size / Max Size / Initial Capacity
• Network + Subnet Information
• Load Balancer Information
• Scaling Policies

 

EC2 Pricing:

            AWS EC2 Pricing:

            http://aws.amazon.com/ec2/pricing

            . On demand

            . Reserved Instance

            . Spot Instance

            . Misc Pricing

CloudFront:

            . Global content delivery network

            . Leverages all AWS edge locations

            . Cache static content

            . Proxy dynamic information

CloudFormation:

            . Automate AWS resource provision

            . Free service

            . Deleting the CloudFormation deletes all instances except data

Elastic Beanstalk:

            . More for developers

            . Node.JS

            . Ruby

            . PHP

            . Python

            . IIS

            . Tomcat

CloudTrail:

            . Records API calls

            . Log file includes (Identity of API Caller, Time, Source IP address, Request parameter, Response elements returned)

            . Maintains history - management console, SDKs, command line tools, and other AWS services

Online courses:

1]         Amazon Web Services (AWS) Fundamentals for System Administrators by Elias Khnaser

www.eliaskhnaser.com