Q11. Explain decorators with a practical example.
A decorator is a callable that takes a function and returns a new one, adding behaviour without changing the original code. The @decorator syntax is sugar for func = deco...
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Q12. Explain Docker networking modes.
Docker creates network namespaces and connects containers using drivers. - bridge (default): containers get private IPs on a virtual bridge. Same-network containers resol...
Q13. How does BigQuery separate storage and compute?
BigQuery is a serverless, columnar data warehouse built on a separation of storage and compute. - Storage: data lives in Capacitor, a columnar format backed by Colossus d...
Q14. When should you not use microservices?
Avoid microservices when: - The domain is still being explored. Wrong boundaries are far more expensive to move than within a monolith. - The team is small. Each service ...
Q15. Explain the difference between computed, watch and watchEffect.
computed derives a cached value from reactive dependencies. The getter re-evaluates only when a dependency changes and something reads the value, which makes it ideal for...
Q16. When should you prefer composition over inheritance?
Inheritance is an is-a relationship: `Dog extends Animal` because every dog is an animal. Composition is a has-a relationship: `Car` holds an `Engine`. Inheritance gives ...
Q17. Explain Azure Blob Storage access tiers.
Blob Storage offers tiers that trade storage cost against access cost and latency. - Hot: frequent access, highest storage cost, lowest access cost. - Cool: infrequent ac...
Q18. What is the difference between ref and reactive, and what are the pitfalls?
ref creates a reactive reference that can hold any value, including primitives, and is accessed through .value in JavaScript while auto-unwrapping in templates. reactive ...
Q19. What is the difference between SQL and NoSQL and when do you choose each?
SQL (relational): rigid schema, ACID transactions, powerful joins and ad-hoc queries, mature tooling. Excel at structured, relational data with integrity requirements suc...
Q20. What is Composer and what does the autoload section do?
Composer is PHP's dependency manager. It reads composer.json, resolves a version graph and writes composer.lock to pin exact versions for reproducible installs. composer ...