If a NIC does not have a link light, there is a failure at which of the following OSI layers?

A.
Physical

B.
Session

C.
Data link

D.
Presentation

Explanation:
The NIC does not have light refers to a situation that there could be a fault in the
LAN cable or the ports are down and all of these fall under the physical layer. To make it simple, it
falls in physical layer because blinking lights refers to the physical connectivity.