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CLF-C02 · Question #822

CLF-C02 Question #822: Real Exam Question with Answer & Explanation

The correct answer is D: Security group. A security group is a virtual firewall that controls inbound and outbound traffic for an Amazon EC2 https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-security-groups.html

Submitted by andres_qro· Mar 6, 2026Security and Compliance

Question

Which AWS service or feature acts as a firewall for Amazon EC2 instances?

Options

  • ANetwork ACL
  • BElastic network interface
  • CAmazon VPC
  • DSecurity group

Explanation

A security group is a virtual firewall that controls inbound and outbound traffic for an Amazon EC2 https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-security-groups.html

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