单项选择题
An administrator has found interference on a network. Which of the following cable types is thenetwork MOST likely composed of?（）
A. UTP B. Fiber C. RG-6 D. STP
单项选择题 Which of the following cable types has a MAXIMUM transmission speed of 10Mbps?（）
单项选择题 Which of the following layers is associated with the physical hardware address of a network node?（）
单项选择题 Which of the following OSI model layers is used for logical addressing?（）
