Practice & Get Certified

Master any topic with category-wise MCQ tests

Attempt real-exam style tests, get instant AI-reviewed results, and earn shareable certificates.

15+ tests 33 attempts 18+ certificates
Intermediate

System Design Basics

Scalability, caching, load balancing, data partitioning and reliability fundamentals.

20 Questions 20 min 0
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Advanced

DSA (Interview Level)

Data structures, algorithms and complexity commonly tested in interviews.

20 Questions 20 min 0
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Intermediate

Authentication & Security

Web security essentials: tokens, hashing, common attacks and defenses.

20 Questions 20 min 0
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Intermediate

DevOps: Git, Docker, AWS & CI/CD

Version control, containers, core AWS services and continuous integration/delivery.

20 Questions 20 min 0
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Intermediate

Node.js & NestJS

Node runtime, modules, async I/O, Express middleware and NestJS building blocks.

20 Questions 20 min 0
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Intermediate

Databases: SQL, MongoDB & Redis

Relational SQL, document stores (MongoDB) and in-memory key-value (Redis).

20 Questions 20 min 0
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Intermediate

React & Next.js

Component model, hooks, rendering, and Next.js routing/data fetching.

20 Questions 20 min 0
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Intermediate

HTML, CSS, JavaScript & TypeScript

Core frontend language fundamentals: markup, styling, modern JavaScript and TypeScrip...

20 Questions 20 min 0
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