Question:

What kind of equipment could you buy if you did not want to purchase another access point, but wanted to keep wireless connectivity in the case that you’ve just installed a wireless access point upstairs in your new home. But when you go down into the basement, you lose your signal and can no longer surf the Internet?

A repeater

Explaination

The original access point does not cover the wireless signal in an area that a repeater can resend. This is a better bargain to purchasing another access point and can quickly replicate the signal to another floor of a house.