The Internet:a "nuts and bolts"view Billions of connected mobile network computing devices: OL TO national or global ISP ■hosts=end systems running network apps at Internet's"edge” Packet switches:forward packets(chunks of data) local or ■routers,switches home network content Communication links provider network datacenter fiber,copper,radio,satellite network transmission rate:bandwidth Networks enterprise collection of devices,routers, network links:managed by an organization Introduction:1-3 Internet The Internet: a “nuts and bolts” view Introduction: 1-3 mobile network home network enterprise network national or global ISP local or regional ISP datacenter network content provider network Packet switches: forward packets (chunks of data) ▪ routers, switches Communication links ▪ fiber, copper, radio, satellite ▪ transmission rate: bandwidth Billions of connected computing devices: ▪ hosts = end systems ▪ running network apps at Internet’s “edge” Networks ▪ collection of devices, routers, links: managed by an organization