Teach Cloud - Cloud, DevOps, and Python Backend Development Blog

❓ Quiz Question

Aug 12, 2026

Quiz: Which AWS serverless compute service executes code automatically in response to events?

AWS Lambda lets you run functions without provisioning or managing servers, scaling automatically from a few requests per day to thousands per second.

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❓ Quiz Question

Aug 12, 2026

Quiz: What does an Auto Scaling Group (ASG) do when traffic surges on an application?

An Auto Scaling Group dynamically adjusts instance count to maintain steady performance during traffic spikes and reduce costs during quiet periods.

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❓ Quiz Question

Aug 12, 2026

Quiz: What is a Container Runtime (e.g. <code>containerd</code>, <code>CRI-O</code>)?

A Container Runtime handles the lifecycle of containers on a node, interacting with Linux cgroups and namespaces to isolate processes.

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❓ Quiz Question

Aug 30, 2026

Quiz: What is the key difference between HTTP status code 401 Unauthorized and 403 Forbidden?

401 Unauthorized means credentials are missing or invalid; 403 Forbidden means the server understands identity but refuses authorization.

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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

Aug 30, 2026

Quiz: Which SQL window function assigns a unique sequential integer to rows within a partition starting at 1?

ROW_NUMBER() generates a strictly incremental sequence number for each row inside a window partition.

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❓ Quiz Question

Aug 30, 2026

Quiz: What is Database Normalization (e.g. Third Normal Form - 3NF)?

Normalization organizes tables into logical entities to ensure data dependencies are properly maintained without redundant duplication.

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❓ Quiz Question

Aug 30, 2026

Quiz: What is the role of Write-Ahead Logging (WAL) in database engine persistence?

WAL guarantees that transaction modifications are safely recorded in non-volatile storage before confirming commits to clients.

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