单项选择题
Which of the following network topologies is MOST likely to affect other devices on the network if there is a problem with one of the devices? （）
A.Mesh B.Bus C.Ring D.Star
单项选择题 Which of the following network topologies is characterized by a central server and uniqueconnections to all clients? （）
单项选择题 Which of the following represents a wiring standard for twisted pair cables?（）
单项选择题 Which of the following can be installed to avoid brown outs?（）
