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Match each networking construct with what it does.
List I
A. Route table
B. Internet gateway
C. NAT gateway
D. Security group
List II
1. allows outbound traffic from private subnets only
2. decides where traffic leaving a subnet goes
3. a stateful firewall attached to an instance
4. allows two way traffic with the public internet

  • A.A-4, B-2, C-1, D-3
  • B.A-2, B-4, C-3, D-1
  • C.A-3, B-1, C-4, D-2
  • D.A-2, B-4, C-1, D-3

Answer: D

The distinction between the two gateways is what makes a subnet public or private. A subnet is private precisely because its route table sends traffic to the NAT rather than the internet gateway. Routes decide the character.

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