python.quiz Python fundamentals Lists, dicts, and the stuff you use every day. 5 questions · pass 80% open
git.quiz Git & collaboration Branching, history, and not rewriting shared main. 5 questions · pass 80% open
sql.quiz SQL fundamentals SELECT with intent — joins, nulls, and indexes. 5 questions · pass 80% open
javascript.quiz JavaScript essentials Types, async, and the DOM-adjacent mental model. 5 questions · pass 80% open
security.quiz Web security basics XSS, CSRF, secrets, and least privilege. 5 questions · pass 80% open
typescript.quiz TypeScript essentials Types that catch bugs before runtime. 5 questions · pass 80% open
linux.quiz Linux shell essentials Paths, pipes, permissions, and processes. 5 questions · pass 80% open
testing.quiz Testing fundamentals What to test, how to isolate, when to stop. 5 questions · pass 80% open
algorithms.quiz Data structures Arrays, hashes, trees, heaps — choose the right shape. 5 questions · pass 80% open
algorithms.quiz Algorithms patterns Two pointers, sliding window, DP state — recognize the pattern. 5 questions · pass 80% open
systems.quiz System design basics Requirements, estimates, caches, queues, and failure modes. 5 questions · pass 80% open
networking.quiz Networking fundamentals DNS, TCP, TLS, HTTP — the path of a request. 5 questions · pass 80% open
devops.quiz CI/CD & DevOps Pipelines, artifacts, gates, and safe deploys. 5 questions · pass 80% open
devops.quiz Observability basics Metrics, logs, traces — and alerts that don't lie. 5 questions · pass 80% open
databases.quiz Databases internals Indexes, plans, isolation — make SQL scale. 5 questions · pass 80% open
systems.quiz Distributed systems basics Partial failure, retries, and consistency trade-offs. 5 questions · pass 80% open