单项选择题
A. Call their local ISP
B. Verify the IP information of the server
C. Check their local Internet connection
D. Verify the hostname of the server
单项选择题 Which of the following is a TRUE statement about static routing vs. dynamic routing?（）
单项选择题 Which of the following devices allows multiple internal IP addresses to access an external websitewith minimal impact to the network bandwidth?（）
单项选择题 802.11g wireless signals operating at 24GHz has a maximum line of sight range of which of thefollowing?（）