单项选择题
A. Incorrect DNS
B. Incorrect subnet mask
C. Duplicate IP address
D. Incorrect SSID
单项选择题 A technician is reporting wireless transmission speeds of 300Mbps. Which of the following wireless standards is being used?（）
单项选择题 A new company has been given one public IP address. The company employs 200 users requiring Internet access from the headquarters. Which of the following can be implemented to provide Internet access for all the employees?（）
单项选择题 An administrator is unable to ping a workstation. Which of the following tools would BEST help toresolve the issue?（）