Extra networking components have to be bought when offices or homes are bigger. The reason for this is that, in some cases, they can’t be directly connected or linked to the Wireless router.

One can expand his home network in these ways:
-expanding the wired network by cables that are running in other rooms in the house/office
-expanding the Wi-Fi coverage when installing extra Wireless Access Points, or, in some cases, by a much more powerful access point.