3

4









(a)
(b)
(c)
(d)
3



(a) 4 (b) 7
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—


,
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(Internet)
6.2


TCP/IP12345
6.2
48(ROM)IEEE(Media Access Control, MAC)

6.2
6.2
A
B
b

IBM

6.2
()100-1000Mbps10-100Mbps

IEEE802
OSI(TCP/IP)
6-1 IEEE802
6.3
——Novell NetwareMicrosoftWindows NT
——HPOpenViewIBM NetView
——
Notes/Domino


6.4
6.4
, (Modem)
---ZHANGXM
ADSL(Asymmetric Digital Subscriber Line)(ISP)8Mbps(ISP)1Mbps
6.4
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6.4
ISDNISDNISDNISDN
ISDN
6.4
WDP (Wireless Datagram Protocol)
:
ATM
Cell()ATM
6.4
ATM
ATM

6.4
6.4

:.
6.4
• FTP (File Transfer Protocol)
• DNS(Domain Name System)



TCP


IP


6.5
A
B
C
D
E

A
(A)
(B)


C
192.0.0.0223.255.255.255

(C)
:
210.39.0.35
C(192.0.0.0223.255.255.255)
10


(a)
(b)

6.5
10


(a)
(b)



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Web
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6.5

6.5
6.5

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6.5
“Internet”
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“”“,HTML”“”“”
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6.5
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“”“”“” E-mail“”“”“”“”()
Outlook Express“”“”“”“”E-mail

FTP(Upload)(Download)
Web
(2)IP
179XY


6.5
6.5





—
google
6.6