Choose a subject to practice
Keep each round focused. Pick a course topic to get questions drawn only from that subject.
Java & Spring Boot
JVM behavior, Spring internals, concurrency, and production troubleshooting.
10 focused questionsPython & Async APIs
Python runtime fundamentals, async service design, and debugging under concurrency.
8 focused questionsSecurity & Authentication
Trust boundaries, sessions, authentication, and authorization.
4 focused questionsDistributed Systems
Kafka delivery, idempotency, transactions, consensus, and trace propagation.
7 focused questionsDevOps & Delivery
Build security, immutable delivery, schema evolution, and infrastructure operations.
8 focused questionsDatabases & SQL
MVCC, isolation, optimizer behavior, storage trade-offs, and safe production tuning.
13 focused questionsUnix & Linux
Linux process, memory, filesystem, shell, and network diagnostics.
9 focused questionsHTTP & APIs
HTTP semantics, API contracts, caching, and reliable clients.
4 focused questionsKubernetes & Platform
Pod lifecycle, traffic routing, resource behavior, and controller operations.
9 focused questionsTypeScript & Node.js
Typed boundaries, Node runtime behavior, and reliable services.
4 focused questions