The OSI (Open System Interconnection) model comprises seven layers: physical, data link, network, transport, session, presentation, and application. The media converter operates at the first layer, the physical layer, which translates frames into bits for transmission. This layer is responsible for transmitting data as electrical signals.

1. The OSI(Open System Interconnection)
contains 7 layers.
1.Physical layer
2.Data link layer
3.Network layer
4.Transport layer
5.Session layer
6.Presentaion layer
7.Application layer
In above layers, media converter
opreates at layer1, Physical layer .
The physical layer translates
the frames into the bits and the bits
are transmitted to tramission medium
Since physical layer transmits the data
as signals which are in the form of bits
(electrical singals).
Therefore, media converter operates at physical layer.
Solution
The OSI(Open System Interconnection)
contains 7 layers.
1.Physical layer
2.Data link layer
3.Network layer
4.Transport layer
5.Session layer
6.Presentaion layer
7.Application layer
In above layers, media converter
opreates at layer1, Physical layer .
The physical layer translates
the frames into the bits and the bits
are transmitted to tramission medium

2. Since physical layer transmits the data
as signals which are in the form of bits
(electrical singals).
Therefore, media converter operates at physical layer.