In recommending network separation deployments for an ECS environment, which strategies ensure both security and efficiency?

Question

Options

• ADeploying all resources in a single subnet for simplicity
• BUsing private subnets for database servers and public subnets for web servers
• CImplementing network ACLs and security groups for fine-grained access control
• DIsolating development, testing, and production environments

• A
  22% (7)
• B
  78% (25)

Explanation

Network separation in ECS environments balances security with operational efficiency by placing resources where they belong: B keeps database servers off the public internet while allowing web servers to handle external traffic - a foundational security pattern. C adds layered defense by combining network ACLs (stateless, subnet-level rules) with security groups (stateful, instance-level rules), giving fine-grained control over what can communicate with what. D ensures a misconfiguration or breach in development doesn't cascade into production, which is both a security and compliance best practice.

Option A is wrong because consolidating everything in one subnet eliminates segmentation entirely - a single compromised resource can reach all others with no barriers.

Memory tip: Think "SID - Subnet separation, Inspection layers, Deployment isolation." If all three are present, your network architecture is exam-ready and production-ready.

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