技术在快速发展进步。因此，我们建立了易于使用的术语汇编，帮助您更好地了解影响您业务的术语、技术和趋势。
A device that receives, amplifies (and sometimes reshapes) and retransmits a signal. It is used to boost signal levels and extend the distance a signal can be transmitted. It can connect two or more LAN segments and physically extend the distance of a LAN. It immediately copies all bits arriving on each segment to all other segments, whether or not they are part of a valid frame.
