For Networking, Bill can go either Wireless or through Ethernet $.$

But now a days and as per his requirement,wireless connection is exactly what bill needs. Wireless connection will give Bill and his employer$$s access to the internet, can send and receive emails,and do anything that would require the usage of the internet. Laptops with wirless connection is a great option as you have mobility and can move freely in the office.Cost of wireless connection are less and are as secure as wired network, if not more $,$ just have to make sure to add password to connect to an access point. For a wireless connection$/$network $,$ Bill will need to use a router which serves as a router between the home LAN and the ISP, routing the traffic between the computers within the office LAN and the Internet. You can add wireless All$-$in$-$one printers$($ which has an option of Printing $,$ Xerox or Scaning and FAX $),$ or any othe mobile devices $,$ if need arise.

Bill can also use an Ethernet cable which connects the computer to the LAN directly. The pros of this option are that data can be moved very quickly and thus are typically faster. A negative thing about Ethernet cable is that data is seldom encrypted. The cost of these cables can add up$.$ If other computers are far apart from each other they can get very expensive, and the cables will be running on the walls, so it will be seen.Laptops will also have limited mobility and free movement in the office is restricted as cables from the laptop will be tethered to the wall.Here also you need router $($ for internet connection$)$ or hub $($ to have all the LAN data points terminate in the hub and Internet connection will also be terminate here $.$ For less number of users and devices $,$ can use router directly to terminate the network point else have to use hub$/$switch etc where all data points gets terminated $,$ sometime that becomes costlier affair

Wirless networking is best suited for the Bill needs.