A network engineer is trying to determine the mac address of a server attached to a switchport on a Cisco Catalyst 6500 Switch. The interface is connected, but no MAC address is present. The server has an IP address of 169.x.x.x. At which layer of the OSI Model does the problem exist?

A.	Layer 1
B.	Layer 2
C.	Layer 3
D.	Layer 4
E.	Layer 5
F.	Layer 6
G.	Layer 7