Consider the following configuration. computer ""a"" ip address: 172.16.100.100 subnet mask: 255.255.0.0 computer ""b"" ip address: 172.16.200.200 subnet mask: /16 what should be done to allow these computers to send and receive data to and from each other?

There is nothing to change.

Explanation:

In the following configuration given in the problem, the necessary IP addresses and the subnet masks have been included in the configuration. The computers can be used to send and/or receive information to/from each other. The computers have been properly set-up and there is nothing to be done to the settings or configurations.

i'm so sorry that's not a question and this isn't an answer