Three Network Polices would be:
1. Standardizing hardware and software Ip addresses to be able to manage or do troubleshooting better and make it easy and simple to do/
2. Security Policy to keep your data and information at a level of protection against hackers and others being able to use it for fradulent reasons and virus that can infect your device or systems/
3. Reliability and Availiblity of the network and how well it can send and recieve data and information that is being tranmitted through the cables and waves to other companys and devices.