Given an Auto Scaling group with minimum size 2, maximum size 4, and desired capacity 3, integrated with an ELB, what happens if one instance fails ELB health checks?

medium📝 service behavior Q4 of 15

AWS - Auto Scaling

AAuto Scaling terminates all instances and stops scaling.

BAuto Scaling does nothing, ELB continues to send traffic to the unhealthy instance.

CELB automatically fixes the unhealthy instance without replacement.

DAuto Scaling launches a new instance to replace the unhealthy one, ELB stops sending traffic to the failed instance.

Step-by-Step Solution

Solution:

Step 1: Understand Auto Scaling reaction to unhealthy instances
Auto Scaling detects unhealthy instances via ELB health checks and replaces them.
Step 2: Confirm ELB traffic behavior
ELB stops sending traffic to instances failing health checks.
Final Answer:
Auto Scaling replaces unhealthy instance; ELB stops traffic to it. -> Option D
Quick Check:
Unhealthy instance replaced = C [OK]

Quick Trick: Auto Scaling replaces unhealthy instances detected by ELB [OK]

Common Mistakes:

Thinking ELB fixes instances automatically
Assuming Auto Scaling ignores unhealthy instances
Believing Auto Scaling stops scaling on failure

Master "Auto Scaling" in AWS

9 interactive learning modes - each teaches the same concept differently

Learn Why Deep Visual Try Challenge Project Recall Time

Want More Practice?

15+ quiz questions · All difficulty levels · Free

Free Signup - Practice All Questions

More AWS Quizzes

Given an Auto Scaling group with minimum size 2, maximum size 4, and desired capacity 3, integrated with an ELB, what happens if one instance fails ELB health checks?

Step 1: Understand Auto Scaling reaction to unhealthy instances

Step 2: Confirm ELB traffic behavior

Final Answer:

Quick Check:

Want More Practice?