Even though current technologies make the ultimate segmented network impractical, new technologies and products hold the promise

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问题 Even though current technologies make the ultimate segmented network impractical, new technologies and products hold the promise of making the concept a reality. Most important of all these new technologies are (66) . The ultimate switched LAN, which is technically possible, now, exhibits the following characteristics:
    1. High-speed yet cost-effective switching devices can be implemented on a wide scale, providing dedicated connections for individual users and supporting the aggregate (67) of all networked users.
    2. The ability to deploy switching capabilities incrementally into the (68) base. Switching implementations support switching of individual users or groups so that existing users of shared media modules can continue to use the existing equipment until they can justify moving to dedicate switched LAN connections.
    3. Support and enhancement of existing routed environments. Switching (69) routint, but rather can be introduced into the network without making any changes to the existing routing equipment or configuration.(70) play a critical role in the integration of switching into existing networks.

选项 A、Routers
B、Devices
C、I/O
D、DSP

答案A

解析 即使当前的技术使得最终分段的网络不能成为现实,但新技术和产品已实现了使理想成为现实的诺言。在这些技术中其中最重要的是基于交换技术的LAN。认为在技术上可行的最终交换LAN现在已展现在如下几个特性:1.高速同时又非常划算的的交换机能被广泛的应用。能提供专注的个人用户连接和支持所有网络用户集合的宽带要求。2.它可以配置交换性能,执行交换可以支持个人或群体的交换。以使得现有的用户能通过使用现有的设备一直共享媒体模块,直到他们能证明目的是在致力于交换LAN的连接。3.保持和提高了现有的路由器设备的性能。而不是取代路由。但是在没有对已现有的路由设备或其他配置的情况下,能引入放到网络中。在广泛存在交换机的网络中,路由也面临着危机的局面。
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