BladeSkill

BladeSkill — boost your skills

Interview training and IT questions database

Practice questions and answers, prepare for interviews, track progress.

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AI Analytics

Answer Score: 8.5/10

Learning Progress: 87%

CHOOSE YOUR SPECIALTY

Thousands of questions on the most popular directions for interview preparation

Frontend

HTML, CSS, JavaScript and modern frameworks

ReactVueAngular

Backend

Databases, API, architecture and security

Node.jsGoPython

Data Science

Build predictions and automate decisions

SQLPandasML

Mobile Dev

Development for iOS and Android platforms

SwiftKotlinFlutter

Machine Learning

How machine learning changes the world of technology

Neural NetworksNLP

Game Dev

Game development basics: important points

UnityUnrealC#

Question 5 of 20

What is Virtual DOM and how does it work?

Your answer...

AI Score

Instant feedback

Interview Trainer

Turn preparation into a game

Our interactive trainer will help you effectively memorize information and pass interviews with confidence. Get instant feedback from AI and track your progress.

  • Learning mode — memorize new topics

  • Smart repetition algorithms

  • Flexible difficulty settings

Why Choose Bladeskill

Our AI assistant helps thousands of developers successfully pass interviews

AI Interviewer

Realistic simulation of a technical or HR interview by voice. AI listens, asks follow-up questions, and evaluates your answers.

Interactive Quizzes

Quick interactive tests across all IT fields for instant knowledge checks and theory reinforcement.

AI Score & Feedback

AI assesses the technical depth of your answers on a 10-point scale and gives concrete advice on improving explanations.

Active Recall Mode

Practices based on spaced repetition and active recall to help you reliably memorize complex technical terms.

8000+ Questions

A complete database of current questions from real IT interviews covering dozens of specialties and tech stacks.

Progress Analytics

Track detailed learning dynamics, the percentage of correct answers, and your readiness level for a real interview.