Follow-up · depth 7
Design a small subsystem that relies on AWS VPC, Subnets, and Security Groups
Design a small subsystem that relies on AWS VPC, Subnets, and Security Groups
Answers use simple, clear English.
Audio N/AQuick interview answer
Sketch components, data flow, failure modes, and metrics around AWS VPC, Subnets, and Security Groups. Example shape: ALB in public subnets; ECS tasks in private; NAT for egress.
Detailed answer
Mini design using AWS VPC, Subnets, and Security Groups: • Components: API edge, worker/queue, store, and observability. • Data flow: request → AWS VPC, Subnets, and Security Groups-related path → response/async side effects. • Failure modes: timeouts, overload, partial dependency loss. • Metrics: latency, errors, saturation for the AWS VPC, Subnets, and Security Groups path. Guardrails: Least privilege SG; VPC endpoints for S3/ECR; flow logs. Parent context: Baseline: VPC CIDR, public/private subnets, IGW/NAT, route tables. Security groups stateful allow-lists; NACLs stateless.
Full explanation
Interviewers want a crisp architecture story anchored on AWS VPC, Subnets, and Security Groups, not a buzzword list. VPC CIDR, public/private subnets, IGW/NAT, route tables. Security groups stateful allow-lists; NACLs stateless. Private workloads without public IPs.
Follow-up questions
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Parent context — AWS VPC, Subnets, and Security Groups
Baseline: VPC CIDR, public/private subnets, IGW/NAT, route tables. Security groups stateful allow-lists; NACLs stateless.
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