Need help with this programming question plz!

Which process would best represent the opposite of exhausting air from a system?

In what way is your social media footprint related to your digital id

How is a wan different than a lan? both connect computers, but only wan users don’t need the same operating system. both are peer-to-peer networks, but only a wan requires networking hardware. both network computers, but only a wan can cover larger geographical ranges. both connect computers to the internet, but only wan connects to the cloud.