单选题A technician needs to assign a default subnet mask for a class B network to a network device that was just installed. Which of the following would the technician use?()A
224.0.0.1B
255.0.0.0C
255.255.0.0D
255.255.255.0
题目内容(请给出正确答案)
单选题
A technician needs to assign a default subnet mask for a class B network to a network device that was just installed. Which of the following would the technician use?()