Which statement describes a MAC address?
- It is 128-bits in length.
- It identifies the source and destination addresses of hosts on the Internet.
- It contains two portions, the network portion and the host portion.
- It is a physical address assigned to an Ethernet NIC by the manufacturer.
Explanation: The Media Access Control (MAC) address is a physical address assigned to each Ethernet NIC by manufacturers. It is 48-bits in length. The MAC address is used to identify the source and destination on a local Ethernet network. It cannot be routed to remote networks.
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