A network technician wants to use a packet analyzer to troubleshoot a reported problem with a user's workstation with IP address 192.168.1.45. To identify the workstation's packets the technician wants to use the workstation's MAC address. Which of the following protocols would provide the needed information?（）
- A、DHCP
- B、ARP
- C、DNS
- D、PING
正确答案:B
答案解析:有
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