A、loCAl-ArEA nEtwork (lAn) is A CommuniCAtions nEtwork thAt (125) A vAriEty oF DEviCEs AnD proviDEs A (126) For inFormAtion ExChAngE Among thosE DEviCEs. thE sCopE oF thE lAn is smAll typiCAlly A singlE BuilDing or A ClustEr (丛) oF BuilDings. thE lAn is usuAlly ownED By thE sAmE orgAnizAtion thAt owns thE (127) DEviCEs. thE intErnAl DAtA rAtE oF lAn is At lEAst sEvErAl mB/s.
thE BAsiC oF lAn CommuniCAtion is BroADCAsting.At EACh stAtion, thErE is A trAnsmittEr/rECEivEr thAt CommuniCAtEs ovEr A (128) shArED,By othEr stAtions.
A、trAnsmission From Any onE stAtion is (129) to AnD rECEivED By All othEr stAtions.
A、ADoptEDB、AttAChED
C、sElECtED
D、uniFiED