Developer D · Web

1. Verified gradeCWorkingQ&A 71.9%Medium confidence25 Aug 2026

   Good grasp of the concepts, and explains the happy path well. Could not yet talk through the failure modes without help.

   Q&A — 16 questions

   • CorrectWhy does semantic HTML matter? Give examples of semantic elements. · Web fundamentals · Basic 1pt
   • CorrectExplain the CSS box model. · Web fundamentals · Basic 1pt
   • CorrectWhen would you use flexbox and when grid? · Web fundamentals · Basic 1pt
   • CorrectWhat is the difference between `let`, `const` and `var`? · Web fundamentals · Basic 1pt
   • CorrectWhat are props and state in a component, and how do they differ? · Application development · Basic 1pt
   • CorrectExplain the event loop, and in what order `setTimeout(…, 0)` and a resolved Promise callback run. · Web fundamentals · Intermediate 2pt
   • CorrectHow does `async`/`await` relate to Promises, and how do you handle errors with it? · Web fundamentals · Intermediate 2pt
   • CorrectWhen should state be lifted up, and when do you need shared or global state? · Application development · Intermediate 2pt
   • CorrectWhen calling an API from a screen, which states must the UI handle? · Application development · Intermediate 2pt
   • CorrectWhy do list items need a stable `key`, and why is the array index a bad key? · Application development · Intermediate 2pt
   • CorrectHow do you make a form accessible? · Quality · Intermediate 2pt
   • CorrectCompare client-side rendering, server-side rendering and static generation. How do you choose? · Application development · Advanced 3pt
   • CorrectWhat are Core Web Vitals, and how would you improve a poor LCP? · Quality · Advanced 3pt
   • WrongExplain XSS and how to prevent it. · Quality · Advanced 3pt
   • WrongWhat is CORS and why does the browser enforce it? · Quality · Advanced 3pt
   • WrongA page feels slow when typing in a search box. How do you find and fix the cause? · Quality · Advanced 3pt

   Dimensions

   • KnowledgeB
   • ImplementationC
   • Code UnderstandingC
   • DebuggingD
   • DesignD
   • CommunicationC

   Independence from AI

   Can explain AI-generated codeYes

   Can modify AI-generated codeYes

   Can identify incorrect AI-generated codePartly

   Can debug without AIPartly

   Can make technical decisions without blindly following AIPartly

   Mostly in control, some reliance (70%).

   Evidence cited (2)

   • Practical task
   • Knowledge questions

   Weak areas

   State management and accessibility.

   Recommended learning

   Rebuild one screen with hoisted state, then run a keyboard-only pass.

   Assessor: Developer C· Skill owner review· next assessment 28 Dec 2026

2. Self assessmentBProficient20 Aug 2026

   Completed the concept session and the first block of the checklist.

   Dimensions

   • KnowledgeA
   • ImplementationB
   • Code UnderstandingB
   • DebuggingC
   • DesignC
   • CommunicationB

   Recorded by the member· Self assessment

Append-only — a new assessment never overwrites an old one.