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When ever a the packet is delivered to a Network its always deals with an IP address, but a packet is further encapsulated into a frame which deals with a MAC address at a data link layer (layer 2). Packet is a LAYER 3 encapsualtion process. But in order to transfer a data from one network to other network both information are required an IP address as well a mac address.
Last Answered:
Oct 20 2009 3:52 PM GMT by Yasirirfan 
2995 pts.