Which concept describes spoofing a MAC address to impersonate another device on the local network?

Which concept describes spoofing a MAC address to impersonate another device on the local network?

• A. TMAC
• B. XArp
• C. DAI
• D. MAC duplicating

Answer: (D)

MAC spoofing is when a device changes the hardware (MAC) address it uses on the local network so it appears to be a different device. This lets a host impersonate another node at the data-link layer, which can bypass MAC-based controls or help in traffic interception in certain network setups. The option described as MAC duplicating captures that idea, since it implies duplicating a MAC address to present as someone else on the LAN. Other terms in the list relate to ARP tools or protections rather than the act of impersonating via the MAC address—XArp is an ARP-related tool, DAI (Dynamic ARP Inspection) is a security feature to prevent ARP spoofing, and the other term isn’t a standard descriptor for this technique.

MAC spoofing is when a device changes the hardware (MAC) address it uses on the local network so it appears to be a different device. This lets a host impersonate another node at the data-link layer, which can bypass MAC-based controls or help in traffic interception in certain network setups. The option described as MAC duplicating captures that idea, since it implies duplicating a MAC address to present as someone else on the LAN. Other terms in the list relate to ARP tools or protections rather than the act of impersonating via the MAC address—XArp is an ARP-related tool, DAI (Dynamic ARP Inspection) is a security feature to prevent ARP spoofing, and the other term isn’t a standard descriptor for this technique.