The client-server topology.
Yes, peer to peer can be implemented in linear bus topology.
Any topology can be used for a peer-to-peer network. The easiest is probably a star topology but it doesn't have to be.
No. A Domain uses a Client/Server networking Model. A Workgroup uses a peer-to-peer networking model.
Peer-to-Peer
Almost all modern Operating Systems support peer to peer networking.
Peer-to-peer
There are a couple but the most common is the star
Bus topology
There doesn't have to be; depends on whether it is a peer-to-peer or a client/server based network. The topology doesn't determine that.
You can find information on tree topology in networking textbooks, online resources such as websites, forums, and tutorials, and through professional courses or certifications in networking. Additionally, attending networking conferences or webinars can also provide insights into tree topology and its applications in networking.
Histograms are typically not used for anything other than looking at patterns of network traffic; it has little or nothing to do with topology or peer to peer systems as is.
A workgroup utilizies a peer to peer networking model.