AWS Certified SysOps Administrator – Associate (legacy) — Question 473

Security groups in Amazon VPC ______.

Answer options

• A. control incoming traffic only
• B. control both inbound and outbound traffic
• C. control neither incoming nor outgoing traffic
• D. control outgoing traffic only

Correct answer: B

Explanation

Security groups in an Amazon VPC act as virtual firewalls at the instance level, allowing users to define rules that control both inbound and outbound traffic. Because they can regulate traffic in both directions, options focusing on only one direction or claiming no control are incorrect.