单选题A user took a laptop on vacation and made changes to the configuration in order to use the device at the hotel. The user can reach the Internet, but cannot access any internal network resources. Which of the following is the MOST likely reason?（）AIncorrect DNSBIncorrect subnet maskCDuplicate IP addressDIncorrect SSID
单选题
A user took a laptop on vacation and made changes to the configuration in order to use the device at the hotel. The user can reach the Internet, but cannot access any internal network resources. Which of the following is the MOST likely reason?（）
A
Incorrect DNS
B
Incorrect subnet mask
C
Duplicate IP address
D
Incorrect SSID
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