Skip to content

Tracks Drills Topics Technologies Tech stacks Skill areas

Tracks Drills Topics

Loading

Aporeon

Technical interview practice, from one developer to another.

About Privacy Terms

Full-Stack Product Features

Forms & Contracts

Form validation, error mapping, API contracts, and frontend/backend boundaries.

4 drillsPractice one at a timeOrdered pathConcept question

Recommended start

Form Validation Boundary

Explains how client-side validation, server-side validation, DTOs, domain rules, and user feedback work together.

Medium~7 minStep 1 of 4

Practice this drill Choose another

Search

4 of 4 shown

1Form Validation BoundaryRecommended startExplains how client-side validation, server-side validation, DTOs, domain rules, and user feedback work together.Concept questionMedium~7 min.NETASP.NET CoreNext.jsPractice 2Validation Error MappingExplains field-level and form-level error mapping from API responses into a usable frontend form experience.Concept questionMedium~7 min.NETASP.NET CoreNext.jsPractice 3Feature ContractExplains how to design DTOs, response shapes, UI needs, API compatibility, and frontend/backend ownership for a feature.Concept questionMedium~7 min.NETASP.NET CoreNext.jsPractice 4Next.js BFF BoundaryExplains when a Next.js route layer helps with cookies, tokens, aggregation, and UI-specific API adaptation.Concept questionHard~9 min.NETASP.NET CoreNext.jsPractice

Practice order

4 drillsOne at a time

1Form Validation BoundaryUp next / Medium / ~7 min
2Validation Error MappingMedium / ~7 min
3Feature ContractMedium / ~7 min
4Next.js BFF BoundaryHard / ~9 min