Compute technology & Services Flashcards
What is CPU and GPU?
Central Processing Unit
Grapics Processing Unit
What does EC2 mean?
Elastic Cloud Compute
What does pricing of EC2 looks like?
- Fixxed : billed per second
- Spot instances (low prices when capacity is available, high prices when less capacity)
-Dedicated hosts:
- Reserved instances: Contract for 1 to 3 years
- Sav
What is load balancing?
A load balancer distributes your incoming traffic evenly over EC2 instances
what are the 4 load balancing types?
Classic: EC-2 classic network + Layer 4/7
Gateway: Use network logging + layer 3/4 (most used)
Application: flex applicaiton mngt + Layer 7
Network: extreme performance and static IP + layer 4 (most used)
What is horizontal sclaing?
uses multiple AZ’s
adds or removes instances (add more T3 smalls to the current T3 small)
What is vertical Scaling?
Adding more power to an EC2 (T3 small -> T3 medium
What can the AWS Compute Optimizer do for you?
Help with right sizing and gives recommendations:
External data, historical data, stream migration to AWS…
SSH Trafic should normaly only from
a specific IP Address
What is instance connect?
Connect via the AWS console
Elastic Container Service (ECS) works best with
Containers = Docker
Elastic Kubernetes Service (EKS) works best with
Kubernetes
What is servleress?
Running service without having to manager the Servers. (ofc there are service but don’t have to manage them)
What lamda?
Lamda is a serverless compute service without you need to run a service.
When to use a lamda?
For example to send email notifications
