Web App Devolopment

Need help with some college past paper solutions.

Hypertext Transfer Protocol (HTTP) - versions 1.x and 2.x
Hypertext Markup Language (HTML5)
Cascading Style Sheets (CSS3)
ECMAScript (Javascript)
Extensible Markup Language (XML)
Javascript Object Notation (JSON)
Websockets
Various architectural patterns such as REST
Asynchronous Programming
NodeJS
JavaScript
JQuery
React