单项选择题 There are two networks sharing the same office space. One network already has an 802.11g accesspoint. The second network acquires one as well. If known, which of the following would help keep the two networks from interfering with each other?（）

单项选择题 Which of the following traffic types would a network layer firewall be unable to filter?（）

单项选择题 One end of a CAT5 cable is punched down following the 568B standard. The other end should beterminated using which standard to make a straight-through cable?（）