A host is connected to a Department network which is part of a University network. The University network, in turn, is part of the Internet. The largest network in which the Ethernet address of the host is unique is:
(A) the subnet to which the host belongs
(B) the Department network
(C) the University network
(D) the Internet
Answer: (D)
Explanation: Ethernet address is basically the MAC address, which is supposed to be unique to a NIC. Thus it is unique over the Internet.
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