单项选择题
Which of the following network media types uses laser light to carry the information?（）
A. IEEE 1394 B. STP C. RG-6 D. Fiber
单项选择题 Which of the following is used to deny or allow access to a wireless router network?（）
单项选择题 Which of the following TCP/IP addresses is a Class C address?（）
单项选择题 Which of the following features on a wireless router maps the private IP address to a public IPaddress?（）
