Select the parts of a business letter.

heading/date line
inside address
list with bullets
salutation
body
closing
objective
signature
typed name

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.