Node.js Skills Tests

Node.js — Beginner

Event loop, modules, buffers, streams basics, and npm tooling. Mix of single-answer and multiple-answer items.

Node.js + PostgreSQL + Docker — Intermediate

Compose networking, migrations, connection pools, secrets, volumes, and everyday incidents when a Node service talks to Postgres in containers.

Node.js — Intermediate

Cluster, worker_threads, HTTP server tuning, diagnostics, and error patterns. Includes single-select and multi-select items.

Node.js — Advanced

V8 JIT edges, snapshotting, security hardening, embedded patterns, and libuv internals at a practical level. Demanding items.

React + Next.js + Node.js — Advanced

Advanced full-path scenarios connecting React UI, Next.js App Router boundaries, and Node.js APIs across authentication, caching, streaming, uploads, and failure handling.

Cybersecurity + Node.js + Docker — Advanced

Advanced hardening of containerized Node.js services: least privilege, secure images, supply-chain controls, runtime isolation, network threats, and vulnerability response.