CPC Prep Load Balancing & Auto Scaling Flashcards
Which service enables connections to be distributed across targets in multiple Availability Zones?
Elastic Load Balancing
Which service automatically distributes incoming application traffic across multiple targets, such as Amazon EC2 instances, containers, and IP addresses?
Elastic Load Balancing
Which service handles varying load of you application traffic in a single Availability Zone or across multiple availability zones and uses health checks to ensure the instance are available?
Elastic Load Balancing
Which service enables high availability, auto scaling, and robust security to make your applications fault tolerant?
Elastic Load Balancing
Which load balancer operates at the request level, routes traffic based on the content of the request (Layer 7) and is best suited for load balancing HTTP & HTTPS traffic?
Application Load Balancer
Which load balancer routes traffic base on IP protocol data (Layer 4) and is best suited for load balancing TCP traffic where extreme performance is required?
Network Load Balancer
Which load balancer performs routing at both Layer 4 and Layer 7 and operates at both request and connection level?
Classic Load Balancer
What is horizontal scaling in reference to EC2?
Adding additional instances
What service helps ensure that you have the correct number of EC2 instances available to handle the application load?
AutoScaling
How do you control when AutoScaling launches or terminates instances?
Specify scaling policies
How do you define triggers when instances should be provisioned/de-provisioned?
Setup Scaling plans
What is the Amazon EC2 AutoScaling launch configuration?
Template used to create new EC2 instances that include:
- instance family
- instance type
- AMI
- Key Pair
- Security Groups
What are EC2 instance Auto Scaling Groups used for?
- Specify the minimum number of instances
- specify the maximum number of instances
- ID desired capacity
