| 1960 | anced Research | Projects Agency ( ARPA ) | | | | | Arpanet | | | | Arpanet | | Arpanet | 1970 1980 | | | | | | | | | | | | | | | | | маршрутаа | WWW World Wide Web | WWW | | | DOWN ( даун ) | UP ( | ап ) | DOWN | | | | | | | | | | | | | | | |