The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver.

The ______ layer adds a header to the packet coming from the upper lay

1.	The ______ layer adds a header to the packet coming from the upper layer that includes the logical addresses of the sender and receiver.
A.	physical
B.	data link
C.	network
D.	none of the above
Answer» D. none of the above