Which setup is best practice for the network configuration?Use a single subnet in one availability zoneUse multiple subnets in different availability zonesUse only public subnetsUse subnets without any security groups

hard📝 Best Practice Q15 of 15

AWS - EKS

You want to create a highly available EKS cluster. Which setup is best practice for the network configuration?

AUse multiple subnets in different availability zones

BUse a single subnet in one availability zone

CUse only public subnets

DUse subnets without any security groups

Step-by-Step Solution

Solution:

Step 1: Understand high availability in EKS
High availability means the cluster stays up even if one zone fails. Using multiple subnets in different availability zones achieves this.
Step 2: Evaluate other options
Single subnet risks zone failure. Only public subnets expose resources unnecessarily. Subnets without security groups lack network protection.
Final Answer:
Use multiple subnets in different availability zones -> Option A
Quick Check:
Multi-AZ subnets = High availability [OK]

Quick Trick: Spread subnets across zones for reliability [OK]

Common Mistakes:

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