What is wireless topology?

Answer 1

It's a network architecture which employs wireless devices. Compared to "classical" network topology, where the cable is network medium, in wireless networks is the air a network medium. It means, that all data travels through the air.

Wireless topology can be of 2 basic categories:

Ad-hoc = no central device, just a bunch of computers connected together through their wireless network adapters.

Infrastructure = there is a central device called "access point" to which all client computers connect. This access point provides interconnectivity between clients and also sometimes between the wireless and wired network.