AWS Environment Flashcards
Why would you want to divide resources across regions?
To put your infrastructure geographically closer to your users to allow for the lowest possible latency
To put your infrastructure within national borders to meet regulator compliance with legal/banking rules
Isolate groups of resources from each other (and larger networks) to allow for the greatest possible security
What is a globally based service?
An AWS resource that is not visibly tied to one region (even if the resources are running on hardware within a single region)
Which services are global?
IAM
CloudFront
S3
How many Availability Zones are in one region?
2
What is a subnet?
A single block of IP Addresses. You will only get the full value out of your resources within an AWS Region by properly organizing them into subnets.
How many subnets can be in one AZ?
200
How can you describe a single point of failure?
A resource running without backup
What is an effective way to prevent against application failure?
Distribute your resources across remote locations.
What is the primary goal of autoscaling?
To ensure that a predefined service level is maintained regardless of external demand or instance failures
What is load balancing?
It ORCHESTRATES the use of multiple parallel resources to direct user requests to the server resource that’s best able to provide a successful experience.
What is a Regional Edge Cache location?
Objects that are rejected by edge locations can be moved to the regional edge cache location, so that the object does have to go all the way back to its origin.
What are the responsibilities of AWS?
Making sure that its locations are secure, reliably powered, and maintained
Patching, encrypting, and maintaining the operating systems and virtualization software running its physical servers and for the software of its managed services
Basically, the hardware and network maintenance, the global infrastructure, and managed services
What are the responsibilities of the customer?
Customer Data
User applications, access management
Operating system, network, and access configuration
Data encryption
Give an example of an unmanaged resource.
EC2
What are the most significant architectural benefits of the way AWS designed its regions?
It can make applications available to end users with lower latency.
It can make applications more compliant with local regulations.
