What does "bare minimum" mean?
"It is possible that the machines all run the same operating system, but this is not required. If the clients and servers run on different systems, as a bare minimum they must agree on the format and meaning of all the messages that they may potentially exchange."
" They must do this. They can also do more, but it is not essential. Consider this simpler example.
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If the clients and servers run on different systems, as a bare minimum they must agree on the format and meaning of all the messages that they may potentially exchange."
If the clients and servers run on different systems, the least they have to do is agree on the format and meaning of all the messages that they may potentially exchange." They must do this. They can also