Source : Free On-Line Dictionary of Computing

knowledge level
     
         A level of description of the
        {knowledge} of an {agent} that is independent of the agent's
        internal {symbol-level} representation.  Knowledge can be
        attributed to agents by observing their actions.  An agent
        "knows" something if it acts as if it had the information and
        is acting rationally to achieve its goals.  The "actions" of
        agents, including knowledge base servers and {knowledge-based
        systems}, can be seen through a "tell and ask" functional
        interface, where a client interacts with an agent by making
        {logical assertion}s (tell), and posing queries (ask).
     
        (1994-10-19)