3: . , , , , ISP : .

: .

: ? , , ISP

: , .

: .

, 1969 DARPA (Defense Advanced Research Project Agency) ARPANET . 1974 62 . 1983 , (Milnet), . 1000 (host computer - ) .

Network & InternetNetwork - A small set of computer Internet - A large set of Network (Definition of the Internet : The internet is the computer network which allows computer users to connect with computers all over the world)InternetNetworkNetwork

- . client . server .

, . . . - . . , /IP . IP . TCP .

WWW (World Wide Web)World Wide Web?WWW, Web1991 Begin * first publicly available description of HTMLHTML RequestHTML ResponseNetwork(HTTP)Web ServerClient Web BrowserServerSend HTML Files by Client RequestDownload HTML & (Interpret)HTML DocumentInternet Explorer, NetscapeWeb Server : APACHE, IIS, TOMCAT

. .

, . . .

- (E-mail) , Messenger , , .

, . , , , , . , , . , , , .

. . ISP Internet Service Provider . 10- ISP, 1 .

1. Dial-Up, xDSL (ADSL, HDSL, VDSL, g.HDSL..) ( , ) - fiber-optic (DWDM, STM-1, STM-4, STM-16) 2. Wireless (wi-fi, wimax..), 3rd generation (CDMA), Satellite (i-direct D-TDMA)..

Dial-Up , , .

xDSL: (Digital Subscriber Line) . Dial-up 525 .

? Modulator Demodulator . .

software hardware 2 . , , Hardware . software .

Built-in Onboard PCMCIA

Cabel Internet . .

Wireless .

24 ( ) (, ) . .

-VSATVSAT (very small aperture terminal)- .

VSAT :InternetVoice Video , Video conference

, . . (shared bandwidth, multicasting, data bursting) .

: .

? , . : ISP , . , , , . : . .

(Magicnet): http://www.magicnet.mn (Micom): http://www.micom.mn (Mobinet): http://www.mobinet.mn (Bodicom): http://www.bodicom.mn (Railcom): http://www.railcom.mn-- (Mcscom): http://www.mcscom.mn, http://www.mongolica.mn (Skylink): http://www.skylink.mn (Erdemnet): http://www.erdemnet.mn

, . http://www.foodtech.edu.com/ . w-w-w dot foodtech dot edu dot mn dot . IP address: : 204.72.200.69 . IP 0.0.0.0 255.255.255.255 .

edu com gov mil net org aero coop info int

()

caauukdejpmnrucn

URL . URL (Uniform Resource Locator) .

URL HTML . , . .

URL (Uniform Resource Locator) Resource_type://host.domain:port/pathname :// /_Resource URLHTTP http://www.magicnet.mn/mongoliaonline.mn/FTP ftp://mosaico.com/edu/harvard

http://www.magicnet.mn/mongoliaonline.mn/

URL - . . , , . URL- . URL , , .

.http://www.cl.uh.edu/uct/uct.html : http: : //cl.uh.edu : /uct/uct.html

: http:URL . http World Wide Web . ftp, , , - . URL- : . URL - : .

: //cl.uh.edu . . ( , ) . (.) .URL- // .

: /uct/uct.html . / . uct uct.html .

URL-

HTTP mailto- newsUsenet ftp file

URL- :

ResourseURLHTTPFTPGopherTelnetHD ( disk)http: // www. Mspu. Edu. Mn- usis- Webftp : // Deerfield . comgofher : // gopher . muro, umn, edu : 70/1.Telnet : // rs . internic, netFile : // C : / http / index . html

*