信息、效率，是信息时代里决定企业市场竞争力的两个基本要素，怎样使企业各功能单位高效地享用和交换信息，并不失时机地予以反馈和处理，受到越来越多的中小企业的重视。企业建立微机局域网（LAN）大有发展前景。它不仅使网中的用户能有效地利用网中的资源，保证信息在各业务 Information and efficiency are two basic elements that determine the market competitiveness of an enterprise in the information age. How to make each functional unit of an enterprise enjoy and exchange information efficiently, and not lose no time to feedback and deal with it, which is receiving more and more attention from small and medium-sized enterprises . Enterprises to establish computer local area network (LAN) great prospects for development. It not only enables users in the network can effectively use the resources in the network, to ensure that information in various businesses