????????(IT Infrastructure)

1
??? ???????????
2
????

• ??? ?????????
• ??? ?????????
• ??? ?????????????
• ??? ????????
• ??? ??????????

3
????

• ?????????????????????????
• ????????
• ???????????
• ????????
• ??????????

4
??????

• ????????(IT Infrastructure)
• ????
• ???????
• ????????
• ???????????????
• ????(Business Opportunities)
• ??
• ??
• ??

5
?4.1 ?????????

• ?????Applegate???????

6
?4.1 ????????? (?)
7
?4.2 ?????????????????????????
8
?????????

• ???
• ????(???)
• ?????????
• ???

9
?????????????

• ????
• ?????????????

10
????

• ??????
• ????????(Application Server)
• ?????????(Database Server)

11
?4.3 ??????????
12
?4.4 ??????????
13
?????????????

• ????????
• ???????
• ???????
• ???????
• ???????
• ????????

14
?4.5 ?????????????????
15
????????

• ??????(Public Network)
• ????(Access Network)
• ????????

16
??????

• ??????(Public Switched Telephone Network, PSTN)
• ????????(Integrated Services Digital Network,
  ISDN)
• ??????(Cellular Mobile Network)
• ??????(Wireless Application Protocol, WAP)
• ??????(Mobile Data Network)
• ????(Satellite Communications)

17
????

• ????(Local Loop)
• ????/????(Broadband Network/Broadband
  Communications)
• ?????????(Asymmetric Digital Subscriber Line,
  ADSL)
• ??????(CATV Network)

18
????????

• ??????(Internet Access)
• ??????(Internet Telephony)
• ????????(Internet Telephony Gateway, ITG)
• ??(Leased Line)
• TCPIP
• IP Address
• Port Number

19
??????????

• ???
• ???(Network Interface Card, NIC)
• ???(Hub)
• ???(Router)
• ???(Switch)
• ???(Gateway)
• ???(Bridge)