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Answer: Security groups are stateful, while network ACLs are stateless
Security groups are stateful, meaning they remember the state of traffic and automatically allow return traffic, whereas network ACLs are stateless and must have rules to allow return traffic.
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What is the difference between security groups and network ACLs in a VPC?
A
Security groups are stateful, while network ACLs are stateless
B
Security groups are stateless, while network ACLs are stateful
C
Security groups can't be applied to VPC resources
D
Network ACLs can't be applied to individual instances