Internet Intro
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12-Jul-2015Category
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E
: - .http://users.sch.gr/dmgtz dgkotzos@primedu.uoa.gr
:
(LAN)
(WAN). To WAN.
Internet - .
: pstn 56kbps, isdn 128 kbps, adsl(2+) 24 mbps (1mbps=1024kbps) (wifi, wimax )A gprs 56kbps /3g/HSPA 7,2 mbps) (FTTN, FTTB, FTTH 100mbps )
Internet
/
Modem / router/ (wireless network card/usb adapter)
Internet (nternet Service Provider) (.. otenet, forthnet)
Dial Up ( 128 kbps) + PSTN/ISDNE dialer
ModemInternetServiceProviderPSTNISDNInternet
O - Voip, IptvM (, ) Internet
(broadband)
Internet
(E-ail) - WWW (World Wide Web) (ftp, p2p, torrents) (telnet) (Chat) - T video
@ () Outlook Express Microsoft Outlook( microsoft office)Webmail ( www) e-mail server
email @ .. dgkotzos@primedu.uoa.gr .. mail.primedu.uoa.gr
email @ 1. Internet 2. email www (www.gmail.com):
e-mail SMTP Microsoft OutlookOutlook Express e-mail www
www
Internet
Y (servers)
server .. www.uoa.gr o .
www (Server) (Client)www.ypepth.gr
(Server) www
() (URL) .. www.ypepth.gr
(www server) www.ypepth.gr
www (clients) Mozilla Firefox (www.firefox.com) Microsoft Internet Explorer ( windows)H (server) (url: Universal Resource Locator )
www.saferinternet.gr
(www.google.gr ) (http://dir.forthnet.gr/)