Target groups concept in AWS - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a target group in AWS Elastic Load Balancing?

A target group is a set of resources, like EC2 instances or IP addresses, that a load balancer directs traffic to. It helps organize and manage where requests go.

beginner

How does a load balancer use target groups?

The load balancer routes incoming traffic to one or more target groups based on rules. Each target group contains targets that receive the traffic.

intermediate

What types of targets can be registered in a target group?

Targets can be EC2 instances, IP addresses, or Lambda functions, depending on the load balancer type and configuration.

intermediate

Why is health checking important in target groups?

Health checks monitor if targets are healthy and able to handle requests. Unhealthy targets are removed from routing until they recover, ensuring reliable service.

advanced

Can a target group be used by multiple load balancers?

No, a target group can only be used by one load balancer at a time. Each load balancer must have its own target groups to route traffic.

What does a target group in AWS primarily contain?

A A list of resources to receive traffic

B Security rules for instances

C User access policies

D Billing information

A target group contains resources like EC2 instances or IP addresses that receive traffic from a load balancer.

Which of the following can NOT be a target in a target group?

A S3 bucket

B EC2 instance

C Lambda function

D IP address

S3 buckets cannot be targets in a target group; targets are compute resources or IPs.

What happens if a target in a target group fails health checks?

A It continues to receive traffic

B It is terminated automatically

C It is removed from routing until healthy

D It is replaced by a new instance

Unhealthy targets are temporarily removed from routing to avoid sending traffic to failing resources.

Can one target group be associated with multiple load balancers?

A Yes

B No

C Only with Classic Load Balancers

D Only with Network Load Balancers

A target group can only be associated with one load balancer at a time.

What is the main benefit of using target groups?

A Monitoring billing costs

B Encrypting data in transit

C Storing user credentials

D Organizing and managing traffic routing

Target groups help organize resources and manage how traffic is routed by load balancers.

Explain what a target group is and how it works with a load balancer in AWS.

Think about how a load balancer decides where to send incoming requests.

Describe the importance of health checks in target groups and what happens when a target is unhealthy.

Consider what happens if a server is down or not responding.