Layer 2 networks question

[cisco steps]

     Hi all , I have this question that confused me little ..

        What is the name of the technology that allows two or more Layer 2 networks to travel on the same physical wire ?

my answer will be Vlan because it is using do1q. but am i be wrong.

Thanks

[Joseph W. Doherty · Accepted solution]

Disclaimer

The   Author of this posting offers the information contained within this   posting without consideration and with the reader's understanding that   there's no implied or expressed suitability or fitness for any purpose.   Information provided is for informational purposes only and should not   be construed as rendering professional advice of any kind. Usage of  this  posting's information is solely at reader's own risk.

Liability Disclaimer

In   no event shall Author be liable for any damages whatsoever (including,   without limitation, damages for loss of use, data or profit) arising  out  of the use or inability to use the posting's information even if  Author  has been advised of the possibility of such damage.

Posting

VLAN trunk (for 802.1Q tagged frames).