单项选择题
Which of the following network topologies is characterized by a central server and uniqueconnections to all clients? （）
A.Star B.Bus C.Mesh D.Ring
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?（）
单项选择题 Which of the following would be included when documenting the MOST recent policy on corporatebehavior? （）
