Dynamic Host Configuration Protocol, also known as DHCP.
Your digital footprint is the trail of 'electronic breadcrumbs' you leave behind when you use the internet. It can include the websites you visit, the photos you upload and your interactions with other people on social networks.
I believe the question is asking which of the options is true about a cyber community. In that case, only D is true, as a cyber community, such as facebook or instagram, gives you that ability. The rest of the options only apply to a physical community.
(A) the same, by applying styles the same formats are being applied each time.