单项选择题 In order for computers with private IP addresses to access the public Internet, which of thefollowing must the router perform?（）

单项选择题 A SONET network typically uses which of the following transmission media?（）

单项选择题 A workstation is having connectivity issues when being added to the domain. Which of the following commands would allow the administrator to see the DNS and WINS servers that are currently configured for the workstation?（）