Question Bank 39
Explain the CSS Box Model and the difference between box-sizing values
CSSBasic
What is the Event Loop? Explain the relationship between Call Stack and Task Queue
JavaScriptAdvanced
What is the Prototype Chain? How does JavaScript inheritance work?
JavaScriptIntermediate
What are TypeScript Generics? Give examples of their use
TypeScriptIntermediate
What are the advantages of Vue 3 Composition API over Options API?
Vue 3Intermediate
What is LCP? How do you optimise it to meet Core Web Vitals standards?
Web VitalsAdvanced
What is a Closure?
JavaScriptBasic
What is HTML Semantic Markup?
HTMLBasic
Where should <script> and <link> be placed in HTML?
HTMLBasic
How to include CSS in HTML? What is the priority order?
HTMLIntermediate
What is the difference between async and defer in <script>?
HTMLIntermediate
Explain CSS Selector Specificity
CSSBasic
What is the difference between px, em, and rem in CSS?
CSSBasic
How to center an element horizontally and vertically in CSS?
CSSIntermediate
What is the difference between display: inline and display: block?
CSSBasic
What is the difference between display: none and visibility: hidden?
CSSBasic
Explain the CSS position property and its values
CSSIntermediate
When should you use JPG, PNG, WebP, or SVG in frontend development?
CSSBasic
What are CSS pseudo-classes and pseudo-elements?
CSSIntermediate
What are Reflow and Repaint? How do you optimise them?
Web VitalsIntermediate
What is throttle? How do you implement a throttle function?
Web VitalsIntermediate
What are the ways to optimise front-end performance?
Web VitalsAdvanced
What is debounce? How do you implement a debounce function?
Web VitalsIntermediate
Explain when DOMContentLoaded, load, beforeunload, and unload are fired
Browser InternalsBasic
Explain event delegation, capturing, and bubbling in the browser
Browser InternalsIntermediate
What is the difference between e.target and e.currentTarget?
Browser InternalsBasic
What is CORS and why does it exist?
Browser InternalsIntermediate
Explain the HTTP caching mechanism
Browser InternalsIntermediate
What are the differences between cookie, sessionStorage, and localStorage?
Browser InternalsBasic
You know localStorage, but do you know IndexedDB?
Browser InternalsIntermediate
What is a Web Worker and what can it be used for?
Browser InternalsIntermediate
Walk through the entire process from typing a URL to seeing the page
Browser InternalsAdvanced
Describe the browser rendering process. What is the difference between reflow and repaint?
Browser InternalsIntermediate
What is the difference between HTTP and HTTPS?
Browser InternalsBasic
What are cookie attributes? How to prevent JS from accessing cookies?
Browser InternalsIntermediate
What are the differences between HTTP/1, HTTP/1.1, and HTTP/2?
Browser InternalsIntermediate
What is a CDN?
Browser InternalsBasic
What are the differences between TCP and UDP?
Browser InternalsBasic
What are the common HTTP status codes?
Browser InternalsBasic