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Reference.org
Non-broadcast multiple-access network
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<p>A non-broadcast multiple access network (NBMA) is a <a href="/facts/Computer_network/3w5RM99p">computer network</a> to which multiple hosts are attached, but data is transmitted only directly from one computer to another single host over a <a href="/facts/Virtual_circuit/8HqpnTxl">virtual circuit</a> or across a <a href="/facts/Switched_fabric/TwfTsu3e">switched fabric</a>. </p>