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Which route table entry correctly enables a private subnet to use a NAT Gateway for internet access?

easy📝 Syntax Q3 of 15
AWS - VPC Fundamentals
Which route table entry correctly enables a private subnet to use a NAT Gateway for internet access?
A10.0.0.0/16 -> NAT Gateway ID
B0.0.0.0/0 -> Internet Gateway ID
C0.0.0.0/0 -> NAT Gateway ID
D10.0.0.0/16 -> Internet Gateway ID
Step-by-Step Solution
Solution:

  1. Step 1: Understand route table for private subnet

    Private subnet routes internet traffic (0.0.0.0/0) to NAT Gateway for outbound access.

  2. Step 2: Differentiate from public subnet routing

    Public subnet routes 0.0.0.0/0 to Internet Gateway, not NAT Gateway.

  3. Final Answer:

    0.0.0.0/0 -> NAT Gateway ID -> Option C

  4. Quick Check:

    Private subnet route to NAT Gateway = correct [OK]
Quick Trick: Private subnet routes 0.0.0.0/0 to NAT Gateway [OK]
Common Mistakes:
  • Routing private subnet directly to Internet Gateway
  • Using wrong CIDR block in route
  • Confusing NAT Gateway ID with Internet Gateway ID

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