CH09????? - PowerPoint PPT Presentation

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CH09?????

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ch09 dns – PowerPoint PPT presentation

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Title: CH09?????


1
CH09?????
  • ???????
  • ??DNS????
  • ???????
  • ???????
  • ??????????????

2
9-1 ???????
3
WWW
  • WWW(World Wide Web)
  • ??triple W?W3 ?3W
  • ??HTTP(HyperText Transfer Protocol) ????
  • ????????????????????????????????(Web Site) ??

4
ISP
  • ????????,????ISP(Internet Service Provider)
    ?????????
  • ISP ??,??????????ADSL ??????????Cable
    ??????????ISP?????Hinet

5
URL
  • URL( ???????)
  • ?????????
  • ???????????WWW ??????????????
  • ???????
  • ????
  • ????????
  • ????
  • ????

6
URL
7
???????
???? ??
http// ????????
ftp// ??????
mailto// ??Email????
telnet// ????????????
news// ????
8
9-2 ??DNS????
9
DNS
  • Domian Name System(DNS, ??????)
  • ????????IP?????????
  • DNS????,??Host File( ????)?????IP???

10
DNS??
  • IP????????????DNS?????
  • DNS ???????????????????????????
  • ???
  • ????
  • ?????
  • ??

11
DNS??
12
???
  • DNS ??????
  • ????????(?????????????)????????

13
????
  • ????????
  • ccTLD(Country Code Top Level Domain)
  • gTLD(Generic Top Level Domain)

14
ccTLD
  • ????????
  • ????????????????
  • ?ISO 3116 ???? ??(country code) ????,? tw
    ?????jp ?????cn ?????ca ???

15
gTLD
  • ??????????
  • ? com?????? ? edu??????

16
???????
17
?????
  • ???????????????????,??????????
  • ???????????,????
  • .com.tw?.edu.tw?.tku.edu.tw ?????????

18
??
  • DNS?????
  • ????????????,??????????

19
9-3 ???????
20
Proxy
  • Proxy( ?????)???????
  • ????????????????????????,????????
  • ??Proxy ????????????(Proxy Server)

21
Proxy?????
  • ??????????
  • ????????,???????????
  • ???????

22
Proxy???
  • ?????????????????????????????,????Proxy??,????????
    ???????????,?????????

23
9-4 ???????
24
???
  • ????WWW????????
  • ???????Netscape,???????????????
  • ???Internet Explore(IE)????1995???

25
?????????
?????????????( ????StatCounter)
26
Google Chrome
  • ??Google ???
  • Google???????????(OpenSource) ?????????????
  • ???????????
  • ??Google Chrome
  • ????

27
Apple Safari
  • ?????????????
  • ??
  • ??????WebKit ?????
  • ???????JavaScript
  • iPhone?iPad??????????????

28
Apple Safari
Apple Safari?????
29
Microsoft Internet Explore
  • Microsoft Internet Explorer,??IE?
  • ?????????????
  • ??????????????Spyglass Mosaic ?????

30
Microsoft Internet Explore
  • ?Inter Explore 4.0 ??,???????????????
  • ???????????????,???????????????

31
Firefox
  • ?????????,????Phoenix?
  • ????????????????
  • ?Mozilla ????MozillaApplication Suite
    ????,???????

32
Opera
  • ?Opera Software ASA ?????
  • Opera ????????????????
  • ??Mac?PC?Linux?PDA???
  • ???????

33
Opera
  • ??????,???????????????????
  • ??????????,???IE?Firefox?Chrome ????????

34
9-5 ??????????????
35
Google Search
  • ?????????
  • ?????????????1998??
  • ????????????,??????????

36
Google Search ????
AND? ? ??
  • ?????????A????B???
  • ? ???A???B
  • ???A?????B
  • ???A AND ???B
  • ??
  • AND??????,??????google???????

37
Google Search ????
OR
  • ???????A????B???
  • ? ???A OR ???B
  • ??
  • OR??????,??????google???????

38
Google Search ????
- (??)
  • ? ???A -???B
  • ??
  • ??-????B???????
  • ??-????????

???????A??????B???
39
Google Search ????
site ??
  • ??????????????
  • ? ???Asitetku.edu.tw
  • ??
  • OR??????,??????google???????
  • ????site???????
  • ?????????,??site?????????

40
Google Search ????
filetype
  • ??????????
  • ? ???Afiletypepdf
  • ??
  • ????filetype???????
  • ?????????,??filetype?????????

41
Google Search ????
.. (???)
  • ??????
  • ? ???iphone,????1800022000???
  • ??? iphone??18000..23000
  • ??
  • ??????????????,??kg

42
Google Search ????
(???)
  • ?????????
  • ? ?????Well begun is half done ???????
  • ??? Well begun is half done
  • ??
  • ?????????????????????,????????????????????google??
    ????????????????????????????

43
????
  • ????(Electronic Mail,e-mail),?????????,???????????
  • ????????????( ?Outlook Express?Eudora?)
    ???????????Web mail ??,??email ?

44
??????
  • ???????????? username_at_hostname
  • username??????
  • hostname????????
  • _at_,????at???,????at????

45
????????
  • ???????????????????????????

46
Email?????
SMTP
SMTP
Access Protocol
A???
B?Mail Server
B???
A?Mail Server
  • SMTP delivery/storage to receivers server
  • Mail access protocol retrieval from server
  • POP Post Office Protocol RFC 1939
  • authorization (agent lt--gtserver) and download
  • IMAP Internet Mail Access Protocol RFC 1730
  • more features (more complex)
  • manipulation of stored msgs on server
  • HTTP gmail, Hotmail, Yahoo! Mail, etc.

47
Web Mail
  • ??????Outlook?Email????????
  • ?????????????????,???????????????
  • ??????WWW??Web mail??
  • ???????????????????

48
??WWW?Web Mail??
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