Answer:
GNU General Public License
Explanation:
The GNU's General Public License is the most popular open-source license around. Richard Stallman created the GPL to protect the GNU software from becoming proprietary, and it is a specific implementation of his "copyleft" concept.
Usually a LAN (Local Area Network), but it's not a requirement. A WAN (Wide Area Network) would need to be used in a multi-campus setup.
Cross-platform, i believe thats your answer
if this is correct please mark as brainliest.
