Question 2.1:

https://infograph.venngage.com/edit/adb14dbb-4304-4a4e-9af4-b8452db3398f
Question 2.2
A digital footprint is a trail left by an entity’s interactions in
a digital environment; including their usage of TV, mobile
phone, internet and world wide web, mobile web and
other devices and sensors. Digital footprints provide data on what an entity
has performed in the digital environment; and are valuable in
assisting behavioural targeting, personalisation, targeted
marketing, digital reputation, and other social
media or social graphing services. (Vivint, 2019)