AWS AI Practitioner — Day 13: Mock Interview & Architecture
Learn: clear, concise architecture explanations and tradeoff reasoning are key in interviews.
Hands-on: record a 5-minute explanation covering data flow, security, monitoring, and rollback.
Practice question:
Q1: What is an important rollback consideration for endpoints?
A) Have infrastructure-as-code for easy redeploy B) Always delete all artifacts on rollback C) Rely on manual ad-hoc scripts only D) Avoid monitoring during rollback
Answer: A — use IaC to reliably redeploy previous working versions.
Daily Practice Questions (new)
Q1: How long should you practice to prepare a 5-minute architecture explanation?
A) 30–60 minutes practice B) 1 minute only C) 1 day only D) 10 days
Answer: A — short, focused practice sessions work well.
Q2: What should a concise 5-minute architecture talk include?
A) Data flow, storage, serving, monitoring, security B) Only cost numbers C) Only code snippets D) Only personal history
Answer: A — cover core system aspects and tradeoffs.
Q3: How to show tradeoffs concisely?
A) State pros/cons and one key metric (cost or latency) B) Use long essays C) Avoid metrics D) Use only diagrams
Answer: A — concise tradeoff framing with a metric is effective.
Q4: What quick diagram tool is useful?
A) draw.io or simple ASCII diagrams in README B) A random image editor C) A spreadsheet only D) None needed
Answer: A — lightweight diagram tools are quick and clear.
Q5: How to practice mock interviews effectively?
A) Pair with a peer or record and review B) Never practice C) Only read slides D) Use random websites only
Answer: A — practice with feedback improves delivery.
Q6: What should you emphasize to examiners or interviewers?
A) Reproducibility and monitoring plans B) Only performance claims C) Non-technical hobbies D) Secret keys
Answer: A — explain how you’d ensure reproducibility and observability.
Q7: How to demonstrate rollback in an explanation?
A) Show IaC and previous stable artifact tag B) Say you’ll never rollback C) Delete all artifacts D) Ignore rollback entirely
Answer: A — reference IaC and artifact versioning for rollbacks.
Q8: What is useful to bring to interviews?
A) Concise notes and diagrams B) Full codebase only C) Passwords D) Large printouts
Answer: A — focused notes and diagrams help communicate clearly.
Q9: How to answer “why this architecture” when unsure?
A) Tie decisions to requirements (latency, cost) and assumptions B) Make up numbers C) Avoid answering D) Criticize others
Answer: A — relate choices to constraints and assumptions.
Q10: How to handle unknown questions in an interview?
A) Outline assumptions and propose a pragmatic approach B) Guess wildly C) Remain silent D) Refuse to answer
Answer: A — clarify assumptions and offer a sensible plan.
Review Questions (previous lessons)
Q1: Which metrics are crucial to monitor model endpoints?
A) Latency, error rate, and throughput B) DNS TTL only C) IAM password age D) File name length
Answer: A — latency, errors, and throughput capture endpoint health.
Q2: How should you secure model artifacts in S3?
A) Encrypt artifacts and restrict access with IAM policies B) Make buckets public C) Store in /tmp only D) Use no encryption
Answer: A — encryption plus IAM controls secure artifacts.
Q3: What is a practical rollback approach for deployments?
A) Reapply previous IaC configuration or redirect traffic to stable version B) Delete everything C) Change DNS randomly D) Ignore failures
Answer: A — IaC and traffic switches support fast rollback.
Q4: Why include health checks in production systems?
A) To detect failures and enable automated remediation B) To slow down responses C) To avoid monitoring D) To increase costs
Answer: A — health checks trigger alerts and recovery steps.
Q5: What is a canary deployment?
A) Rolling out changes to a small subset first to validate behavior B) Immediate global rollout C) Deleting previous version D) Changing logs only
Answer: A — canaries limit exposure while verifying changes.
Q6: How to explain cost tradeoffs concisely?
A) Compare instance-hours and scaling options vs latency/cost needs B) Use only buzzwords C) Avoid numbers D) Provide no info
Answer: A — tie tradeoffs to measurable metrics like instance-hours.
Q7: What common security control protects S3 content?
A) KMS for encryption and bucket policies for access control B) Route 53 only C) EC2 instance roles only D) Local OS permissions
Answer: A — KMS and bucket policies are core controls.
Q8: How to validate architecture during an interview?
A) Reference tests, monitoring, and rollback plans you would use B) Recite code only C) Ignore monitoring D) Provide no evidence
Answer: A — show how you’d test and monitor the design.
Q9: Why prefer small pull requests in deployment workflows?
A) Easier review and faster, lower-risk merges B) To increase complexity C) To avoid testing D) To delay releases
Answer: A — small PRs make changes easier to validate.
Q10: What indicates readiness for production?
A) Reproducible deploys, automated tests, and monitoring in place B) No tests at all C) Only local runs D) Manual steps only
Answer: A — these components signal production readiness.