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What is the main purpose of a NAT Gateway in AWS for private subnets?

easy📝 Conceptual Q11 of 15
AWS - VPC Fundamentals
What is the main purpose of a NAT Gateway in AWS for private subnets?
ATo block all internet traffic from private subnets
BTo provide direct internet access to public subnets
CTo assign public IP addresses to private subnet instances
DTo allow instances in private subnets to access the internet securely
Step-by-Step Solution
Solution:

  1. Step 1: Understand NAT Gateway role

    A NAT Gateway enables instances in private subnets to initiate outbound internet traffic while preventing inbound internet connections.

  2. Step 2: Compare options

    Only To allow instances in private subnets to access the internet securely correctly describes this purpose; others describe unrelated or incorrect functions.

  3. Final Answer:

    To allow instances in private subnets to access the internet securely -> Option D

  4. Quick Check:

    NAT Gateway purpose = Allow private subnet internet access [OK]
Quick Trick: NAT Gateway = private subnet internet access [OK]
Common Mistakes:
  • Confusing NAT Gateway with Internet Gateway
  • Thinking NAT Gateway assigns public IPs
  • Believing NAT Gateway blocks internet traffic

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