AWS - VPC Fundamentals
You have a public subnet and a private subnet in a VPC. To allow instances in the private subnet internet access without exposing them directly, how should you configure the route tables?
You have a public subnet and a private subnet in a VPC. To allow instances in the private subnet internet access without exposing them directly, how should you configure the route tables?
hard📝 Architecture Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Understand subnet roles
Public subnet has direct internet access via Internet Gateway.Step 2: Private subnet internet access
Private subnet uses NAT Gateway in public subnet for outbound internet.Step 3: Configure route tables accordingly
Public subnet route table points 0.0.0.0/0 to IGW; private subnet route table points 0.0.0.0/0 to NAT Gateway.Final Answer:
Public subnet route table directs 0.0.0.0/0 to an Internet Gateway; private subnet route table directs 0.0.0.0/0 to a NAT Gateway -> Option DQuick Check:
Private subnet uses NAT Gateway for internet [OK]
Quick Trick: Private subnet routes 0.0.0.0/0 to NAT Gateway [OK]
Common Mistakes:
- Assigning Internet Gateway directly to private subnet
- Using same route table for both subnets
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