Let's consider there's a host which is forwarding data to a switch. Now here, on the host device, a FRAME is made (Layer 2) and is forwarded to a switch. A switch only understands Layer 2 information. But the physical wire connecting the host and the switch carries electrical signals in the form of Binary Right (Layer 1)? So does the Switch has the capability to decapsulate Layer 1 electrical signals to Layer 2 information or there's something entirely different stuff happening??
Doubt in encapsulation-decapsulation.
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The Layer 1 binary, regardless of the medium that the signal goes across carries the same data--"1s" or "0s". When the NIC receives the electrical or light impulses, can
readthat as 1 or o. So, there is no header on layer 1 to decapsulate.
Edutainer Manager, ITProTV
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