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❓ Quiz Question

Oct 25, 2026

Quiz: In the Saga Pattern, what is the key difference between Choreography and Orchestration?

In Choreography , microservices react to events autonomously. In Orchestration , an orchestrator orchestrates the sequence of commands and compensations.

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❓ Quiz Question

Oct 25, 2026

Quiz: What is the CQRS (Command Query Responsibility Segregation) pattern?

CQRS decouples the command (write) model from the query (read) model, often pairing with event sourcing to optimize read projections.

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❓ Quiz Question

Oct 25, 2026

Quiz: In GitHub Actions CI/CD workflows, which top-level YAML key declares the triggers or webhook events that initiate the pipeline?

The on key defines repository events (e.g., push , pull_request , schedule ) that trigger the workflow.

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❓ Quiz Question

Aug 30, 2026

Quiz: What does HTTP 502 Bad Gateway indicate?

… Nginx) fail to receive a valid response from backend web workers (e.g. Gunicorn/Flask).

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❓ Quiz Question

Aug 30, 2026

Quiz: What is the primary benefit of the OAuth 2.0 Authorization Code flow with PKCE?

PKCE (Proof Key for Code Exchange) protects OAuth 2.0 flows against authorization code injection and interception risks.

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❓ Quiz Question

Aug 30, 2026

Quiz: Which HTTP status code is used when a server understands the content type of a request payload, but the payload data fails domain validation rules?

422 Unprocessable Entity (often used by FastAPI/Pydantic) indicates syntactically valid JSON that fails semantic schema validation.

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❓ Quiz Question

Oct 25, 2026

Quiz: What is the primary role of a Protocol Buffers (`.proto`) definition file in gRPC architecture?

.proto files act as the single source of truth IDL, compiling via protoc into type-safe client stubs and server interfaces across languages.

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❓ Quiz Question

Oct 25, 2026

Quiz: In Docker Compose YAML, what is the architectural function of the 'depends_on' configuration key?

… expresses startup and shutdown sequencing between services when executing docker compose up .

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