How to prevent overlapping in relative layout programmatically?

Why does wireless Ethernet use a different scheme to prevent overlapping transmissions of data?

• If you could please describe the scheme and how it differs from wired Ethernet, that would be helpful. Thank-you. Oh and this is a question of a past paper exam I'm using for my revision, it's not homework/coursework or anything like that.

• Answer:

  First, Wireless isn't Ethernet at all. Ethernet is 802.3 and WiFi is 802.11. Though they both operate at the physical and link layers, their methods are completely different. I'm only going to give you the basic differences as I don't feel like writing a book this morning. Ethernet is full duplex (but can be half-duplex) were as WiFi is only half-duplex. Ethernet uses a bounded medium (a wire), WiFi is unbounded (RF). I believe Ethernet uses CSMA/CD while WiFi uses CSMA/CA. Ethernet has the capability of have dedicated connections/dedicated medium, while WiFi is a shared medium.