You know the device’s IP address. But what MAC address is PC1 actually using to reach it? Command Mini Lab First: ping 192.168.10.20 Then: arp -a Find the IP address. Find its MAC address. Verify the ARP entry. IP → MAC. That’s ARP. #ITSupport #NetworkTroubleshooting #HelpDesk #Networking #ITStepByStep #NetworkingwithKhalid