Question about the network. What should be the network?

Here is the program on one 1ПКи on the same program on the other 2PCS. One person wrote something or changed it(ie turned it added an entry in the program)(Not in code) on PK1 .And another user the user is on 2CO this change saw. Could it be the network local or must it all through the Internet to do? As easier?
March 19th 20 at 09:20
2 answers
March 19th 20 at 09:22
Could it be the network local or must it all through the Internet to do? As easier?

Do not have. It does not even matter, the application program - the highest level of OSI, they don't care which network.
Which is easier - depends on the situation. If both clients two white IP work through the Internet easier, and for the local network no matter whether the Internet. But, again, this is not important.
March 19th 20 at 09:24
Could it be the network local or must it all through the Internet to do?
It may not necessarily.

As easier?
I know that it's easier and what's harder. The same to me.

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