What network architecture, topology and layout would be best suited for Linux (Ubuntu 20.04 LTS Server)?

Discuss:

• ease of installation, performance characteristics and
• features and overall cost for networking hardware chosen, as well as installation costs, including network cable installation.

Also provide your solutions for

• additional support for some limited wireless network options, apart from the mainstream wired connections for this office/client and
• maintaining a high degree of reliability, in terms of providing redundancy.