<prompt> Bheka isigaba esingezansi bese uphendula umbuzo emva kwalokho ngolimi olufanayo nesigaba: I-Passage: I-Novell yasekela inqubo yayo yenethiwekhi ku-Xerox Network Systems XNS, futhi yakha amazinga ayo kusuka ku-IDP naku-SPP, ayiqamba ngokuthi i-Internetwork Packet Exchange IPX ne-Sequenced Packet Exchange SPX. Izinsizakalo zefayela nezokuphrinta zisebenza kuNetWare Core Protocol NCP nge-IPX, njengoba kwenza i-Routing Information Protocol RIP ne-Service Advertising Protocol SAP. Umbuzo: Zisho ukuthini izinhlamvu ezithi SAP?  <response>: Iphrothokholi Yokukhangisa Ngesevisi 