**IAM roles:** Service-to-service (Lambda→S3). Prefer over keys. **Service accounts:** Apps; rotate creds. **OAuth2/OpenID:** User-facing; PKCE for public. **API keys:** External partners; narrow scope; rotate. **Secrets managers:** Store keys; never commit. **Why each:** Least...
This easy-level General/Other question appears frequently in data engineering interviews at companies like Chubb. While less common, it tests deeper understanding that distinguishes strong candidates.
Start by clearly defining the core concept being asked about. Interviewers want to see that you understand the fundamentals before diving into implementation details. Structure your answer with a definition, then explain the practical application with a concise example.
IAM roles: Service-to-service (Lambda→S3). Prefer over keys. Service accounts: Apps; rotate creds. OAuth2/OpenID: User-facing; PKCE for public. API keys: External partners; narrow scope; rotate. Secrets managers: Store keys; never commit. Why each: Least privilege; workload identity when available. Cost: Key rotation adds ops; automation essential.
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Analyze My Answer — FreeAccording to DataEngPrep.tech, this is one of the most frequently asked General/Other interview questions, reported at 1 company. DataEngPrep.tech maintains a curated database of 1,863+ real data engineering interview questions across 7 categories, verified by industry professionals.