Final answer:
MAC addresses have three key features: they are unique identifiers, permanent, and used in address resolution.
Explanation:
Features of a MAC Address:
- Unique Identifier: Each MAC address is globally unique, ensuring no two devices on a network have the same MAC address.
- Permanent: MAC addresses are assigned to a device's network interface at the time of manufacturing and cannot be changed.
- Used for Address Resolution: MAC addresses are used in Address Resolution Protocol (ARP) to map IP addresses to physical MAC addresses.
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