PACKETS .

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???????? - ??? ??????? ??????? ?????? ?? ??????
??????? ??????? PACKETS ?? ????. ??????? ??????
TCPI/IP ????? TRANSMISSION CONTROL PROTOCOL/
INTERNET PROTOCOL. ????? ?? ????? ?? ?????
???????? ?????? ???? ????.
2
????? ???????? ????? ????? ?? ??? ????? routers
????? ???? ???? ?????? ??????? ????? ?????
??????? ????.
3
???? 1960 ????? ??? ??? ????? ???? ?????
??????? ???? 1980, ????? ??? ?????? ??? ??????
????? ?- National Science Foundation
?????. ???? ????? world wide web ?? WWW ?????
?- 1990
4
???? ??????? ?????? ???? ISDN - Integrated
Services Digital Network ????? ????? ???? ????
?? 56-128kb/sec
5
???? ??????? ?????? ???? DSL - Digital
Subscriber Line ????? ????? ???? ??? ???? ??????
?? ?????? ??????? ?? 1000Kb/sec - 6000kb/sec
6
???? ??????? ?????? ???? ????? ????? ???
?????? ????? ???? ???? ????? ???? ????? ?????
???????? ??????.
7
?????? ???? ??? ??? ?????? ?- HTML ?????
?????? ??????? ?? ??? ???? ??????? ???? ??
????. URL Uniform resource Locator ?????? ???
????. ???????? HYPERLINKS ???????? ?????
?????????? ???? ??? ?????.
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?????? URL HTTP// Hypertext Transfer
Protocol ????? ????? ??????? ????
IP ??? ???? IP ?? ????? ???? ?????? ???????? RUN
??????? winipcfg
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?????? URL HTTPS// Hypertext Transfer
Protocol- secure ??? ??????.
10
???? ????? ???
11
???? ????? ?????
12
???? ?????? JAVA APPLETS ??????? ???????
??????????????. ????? ???? ????? (??? ?????
?????? ??? ??? ????).
13
???? ?????? JavaScript ??????? ?????????????,
???????, ???? ?????? ?? ???? ?????? ??????
?????. ??????? javascript. Internet.com www.jav
ascript.com http//cws.internet.com/32dhtml.html
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(No Transcript)
15
???? ?????? Plug-in ????? ????? ?????? ???????
???? ????. Acrobat Reader ????? ????? ?-??????
??????? ?- print portable document format,
.pdf www.adobe.com
16
???? ?????? Plug-in RealPlayer ????? ????? ??
???? ????? ?????? ?????? www.real.com
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???? ?????? Plug-in Flash Player ????? ??????
???? ????? ???????? www.macromedia.com
18
???? ?????? Streaming multimedia ???? ???,
????????? ???? ????? ?????? ???? ????? ?????? ??
?????. ?? ??? ?? ???? ????? ???????. ? streaming
???? ????? ?- player , ??? ?????, ??? ????? ??
????? ??? ??? ??????.
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???? ?????? Streaming multimedia ???? ???,
????????? ???? ????? ?????? ???? ????? ?????? ??
?????. ?? ??? ?? ???? ????? ???????. ? streaming
???? ????? ?- player , ??? ?????, ??? ????? ??
????? ??? ??? ??????.
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???? ???????? ????????. CGI Common Gateway
Interface ?????? ??????? ???? ???? ??????
???????? ????? ????. CGI ??? ??? ????? ???? ???
??????? FORMS. ????? ?? ???? Server side
solution
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???? ???????? ????????. ???? ???? Client side
solution ??? ???? ????? ??? ?? ??? SCRIPTS
??????? ??????? ?? ????? ?? ????? (??? ?? ????
??????).
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???? ???????? ????????. ???? ???? Client side
solution APPLETES ?????? ?????? ????? ??
????? ??????? ??. ?? ?????? ????, ????? ?????
????????? ??????.
23
???? ???????? ????????. ACTIVE X (??????? ?-
Explorer ). ?????? ??? APPLET ??? ???? ????
???? ?????? ?????? ?? ?????? ???? ?????
????. ??? ???? ????, ????? ???? ?????? ??????
????? ??????? ?????? ?????? ?????? ???????.
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?????? ???????? ??? ?? ?????? IP ?? IP
number "An identifier for a computer or device
on a TCP/IP network" . ???? IP ??? ??? ?????
?????? ??????? ??????. ?? ???? (??? ?????
???????) ??? ????? ?- 0 ?? 255. ????
1.160.10.240
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• ????? ????? IP ?? ???
• InterNIC Registration Service
• Class A - supports 16 million hosts on each of
  127 networks
• Class B - supports 65,000 hosts on each of 16,000
  networks
• Class C - supports 254 hosts on each of 2 million
  networks
• ???? ??? ????? ???????, ??????? ????? ?????.

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• ???? ???????
• gov - Government agencies
• edu - Educational institutions
• org - Organizations (nonprofit)
• mil - Military
• com - commercial business
• net - Network organizations
• ca - Canada
• th - Thailand
• ??????
• ????????

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• ???? ??????? ?????? ??????
• store - merchants
• web - parties emphasizing Web activities
• arts - arts and cultural-oriented entities
• rec - recreation/entertainment sources
• info - information services
• nom - individuals

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??????? ?? domain name ?- IP number ???? ??
??? ??? ????? ?? DNS Domain Name System (or
Service), ???? ??? ?????? ????? ?? ?- IP ??????
??????? ??? ?? ????.
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???? ????? ?????? ??????? ???? ?? ????? ?????
?????? ???????? ??? ??? ???? ??? ????? ?????
???? ????? ???? ?????
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???? ????? FTP (file transfer protocol) Serve
files to customers with your own FTP site or
create a gopher site for serving extremely large
collections of information List Servers Create
and serve your own mailing lists and e-mail
response systems for your users, customers, or
affiliates Mail Servers Set up a messaging
system that allows your users to exchangee-mail
over LANs and/or the Internet News
Servers Create and serve your own intranet and/or
Internet-based news and discussion groups Keep
your internal network safe while still allowing
your users to access the Internet
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???? ????? Audio-video serverDeliver
eye-catching streaming multimedia content over
the Web - ???? ??? ?????? ?? ???????.