Career challenges
Short multiple-choice and scenario quizzes on the topics candidates search for most - pass odds, pay intuition, frontend level, mistakes, and job-market readiness.
HTTP methods in REST APIs
Verbs, safety, and idempotency in typical API design.
6 questionsStart test
Relational DB & SQL SELECT
Rows, keys, and reading data with SQL.
6 questionsStart test
HTTP status codes in APIs
2xx, 4xx, 5xx and when to use them.
6 questionsStart test
Authentication vs authorization
Login vs permissions for APIs and services.
6 questionsStart test
Caching in backend systems
HTTP caches, app caches, and invalidation in one line for interviews.
6 questionsStart test
ACID & database transactions
Commit boundaries, failure, and why payments need transactions.
6 questionsStart test