uestion 2 (4 points) Which of these are characteristics of Web 2.0? (select all that apply, omit those that do not.) Ua) Supports sharing by allowing users to post videos on the web. Ob) Requires web contributors to have extensive knowledge of HTML Oc) asynchronous communication d) Encourages the formation of communities that contribute to content. e) Supports collaboration by allowing users to modify content on the web. Uf) Secures user data to prevent unauthorized access