https://docs.microsoft.com/en-us/learn/certifications/exams/az-103
Plan IP addressing for your networks
Before planning your network IP address scheme, you must gather the requirements for your infrastructure. These requirements also will help you prepare for future growth by reserving extra IP addresses and subnets. Here are two of the questions you might ask to discover the requirements:
- How many devices do you have on the network?
- How many devices are you planning to add to the network in the future?