layer - Network protocols consist of several layers, from the lowest physical (cable, fiber, etc) level to more abstract layers of signaling, data formats, and addressing standards. Under the OSI model there are seven layers.
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дс тдрлими цюлютдажкию дроемжки аиакиохдйис лидр
http://www.msg.net/kadow/answers/l.html#layer;
