How to find out the MAC in network card?
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arp -a
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arp -vi
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apr -a
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apr -vi
A
Correct answer
Explanation
The arp -a command displays the ARP (Address Resolution Protocol) cache, which shows IP-to-MAC address mappings for recently communicated network devices. This is the standard way to view MAC addresses of network interfaces and remote systems. Options B, C, and D have incorrect command syntax or don't exist.