Which OSI layer header contains the address of a destination host that is on another network?
A.
 application
B.
 session
C.
 transport
D.
 network
E.
 data link
F.
 physical
Explanation:
Only network address contains this information. To transmit the packets the sender uses
network address and datalink address. But the layer 2 address represents just the address of
the next hop device on the way to the sender. It is changed on each hop. Network address
remains the same.

D – Network