Question

question 4
what will a host on an ethernet network do if it receives a frame with a unicast destination mac address that does not match its own mac address?
it will remove the frame from the media.
it will strip off the data - link frame to check the destination ip address.
it will forward the frame to the next host.
it will discard the frame.

Explanation:

In an Ethernet network, a host checks the destination MAC address of a received frame. If it's a unicast frame and the destination MAC doesn't match its own, it has no need for the frame and discards it. It doesn't remove it from the media (that's not its function), doesn't strip the data - link frame to check IP (MAC is at data - link layer and it won't go to network layer for this purpose), and doesn't forward it as it's not a router or switch with forwarding functionality for this case.

Answer:

It will discard the frame.