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AWS Certified Solutions Architect study material · question 361 of 500

How many network ACLs can a subnet be associated with at one time?

  1. Up to five, evaluated in rule-number order
  2. One per protocol in use
  3. Any number, combined as a union
  4. Exactly one, and associating another drops the previous one
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Answer: D. Exactly one, and associating another drops the previous one

One network ACL can cover many subnets, but each subnet has exactly one at a time.

Source: Control subnet traffic with network access control lists (Amazon Web Services) — Network ACL associations

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