单选题Which of the following should a technician do FIRST to troubleshoot a users network connectivity problem？（）ARun TRACERT from the users workstation.BStart with the Last Known Good Configuration and reboot the computer.CReplace the network interface card （NIC）.DPING the users workstation.
单选题
Which of the following should a technician do FIRST to troubleshoot a users network connectivity problem？（）
A
Run TRACERT from the users workstation.
B
Start with the Last Known Good Configuration and reboot the computer.
C
Replace the network interface card （NIC）.
D
PING the users workstation.
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