If a single isolated LAN does not need dynamic routing or DNS, does it need to have the TCP/IP stack? What automatic techniques are possible to update the IP routing table? Can it be done manually,...

If a single isolated LAN does not need dynamic routing or DNS, does it need to have the TCP/IP stack? What automatic techniques are possible to update the IP routing table? Can it be done manually, too? Is ‘client–server’ the same as ‘peer-to-peer’?