Scenario You are building a site where people can display and advertise their collections. This can take the form of texts, images, or sound and video recordings. Users can comment on the various submissions and point out links to other potential ancestors in the system. Everyone using the system must register by providing an email address and name. There are moderators who can remove and lock items where necessary. Users can lock their own submissions from changes and comments. The site has the following characteristics: a) There are group pages for discussion about particular kinds of collections but also pages dedicated to particular collections, b) Each collection has its own unique URL and can have pages under this that display individual items. c) Comments appear on the pages for the relevant text, image, etc. Users can delete and edit their own comments and reply to other comments. Moderators and the collection owner can remove comments, and lock or archive them. d) The site uses a variety of client-side packages to enhance its user experience. e) The site will be built using PHP, RedBean and Twig Question 3 - SEO Describe the strategies you would use to make sure this site was ranked as highly as possible by search engines. Question 4 - Caching Describe the techniques you would use to reduce server and network load by improving the cacheability of a) The group discussion pages b) The individual item pages c) The images and videos d) The various client-side packages Where appropriate, also suggest how you would try to ensure that users were delivered the latest version of a file