User:Waiyi629

i have learned a lot of things in internet class.Internet is a worldwide system of computer networks. In internet has some browser to view plenty materials on the portion( world wide web). wan links the lans to extend over wider area. nap allows isps or iaps to connect to an internet backbone. it consists high-speed lines to form the core network. bandwidth measurements files in bytes, kbps or gbps.the adsl can provide very high vdsl. the download speeds up to 9 mbps. url are a addresses to provide the path to a doc. helper application can be opened to display content download by a browser. malware includes virus, worms and trojan horses. they give more harm for computer system.