[Layer#] 1 [Description] The lowest layer of the OSI is generally concerned with the transfer of data medium like optical or electrical medium etc. [Name] 
Physical
A p p l i c a t i o n
P r e s e n t a t i o n
S e s s i o n
T r a n s p o r t
N e t w o r k
D a t a L i n k
P h y s i c a l