{HEAD ~ A plurality} of elements is connected to the network including a monitor server, wherein the monitor server includes monitoring means for obtaining status information from the plurality of {TAIL ~ elements} 
{ HEAD ~ A plurality } of elements is connected to the network including a monitor server , wherein the monitor server includes monitoring means for obtaining status information from the plurality of { TAIL ~ elements }
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL