31.   But while more people are using wireless networks, few are taking the steps to make them secure.

32.   Cisco uses a network internally, too.

33.   CellNet uses wireless networks to read meters.

34.   Cellular companies are examining technology that will let them locate callers using special networks at cell sites.

35.   Client-server systems overall are selling at a faster pace than mainframes, as more companies use networks of high-powered computer servers linked to personal computers.

36.   Companies use the network to connect electronically to their suppliers, for example.

37.   Companies use the networks LANs to enable their employees to share software, information and applications over a common network.

38.   Companies such as Netscape provide software for using the network.

39.   Currently, competitors of BT and Mercury must use the networks of those two operators to send voice calls out of the U.K..

40.   Data networks are used to allow electronic devices, including computers, fax machines and phones, to communicate with each other.