Or ethernet, if an adapter determines that a frame it has just received is addressed to a different adapter it discards the frame without sending an error message to the network layer it sends a nack (not acknowledged frame) to the sending host it delivers the frame to the network layer, and lets the network layer decide what to do it discards the frame and sends an error message to the network layer

For Ethernet, if an adapter determines that a frame it has just received is addressed to a different adapter

a. it discards the frame without sending an error message to the network layer

b. it sends a NACK (not acknowledged frame) to the sending host

c. it delivers the frame to the network layer, and lets the network layer decide what to do

d. it discards the frame and sends an error message to the network layer

Option A

Explanation:

The nodal address has to match the signal message address for it to function well but if the it doesn't match the nodal receiver address, it disregards it.

i guess it’s a and b