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CHARPTER 5 (Computer

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CHARPTER 5 (Computer Network and Communication) – PowerPoint PPT presentation

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Title: CHARPTER 5 (Computer


1
CHARPTER 5
???????????????????? ????????????? (Computer
Network and Communication)
2
???????????????
  • ???????????????????????????
  • ?????????????????????????????????
  • ???????????????????
  • ???????????? ???????????????????????????????????
    ?
  • ??????????????????????????????????????????????????
    ???
  • ???????????????????????????????
  • ?????????????????????????????
  • ??????????????????????????????????????? (Network
    Topology)
  • ???????????????????????????????????????

3
???????????????????????????
  • ?????????? (Communication)

??????? ????????????????????????????????????
????????????? ????????????????????? ??????
??????????? ???????????????? ????????????????????
?????? ???????
  • ???????????????? (Data Communication)
    ???????????????????? Data
  • Transmission

??????? ??????????????????????????????????
??????????????????????????????? ??????????????????
????????????????????????????????? (Communication
Channel) ????????? Data ?????????????? (Voice)
4
  • ????????? (Telecommunication)

??????? ????????????????????????????????????
?? ? ?????????????????? ??????????????????????????
?????? ????????????????????????? (Data)
??????????? (Voice)
5
??????????????????????????????
?????? / ???????
??????
??????
??????????? - ?????????
6
???????????????????????????? ????????
  • ?????? (Sender)
  • ?????? (Receiver)
  • ?????? / ???????
  • ??????? (Protocol)
  • ??????????? ????????? (Medium)

7
??????????????????????????????????????????????????
????????
Digital
Digital
Analog
??????
??????
??????
???????????????????? (Data Communication)
8
???????????????????
??????????????????????????????????? 2 ???????
?????????????? (Analog ) ????????????????
(Digital)
?????????????? (Analog Signal )
????????????????????????????? (Waveform)
???????? ??????? ???? ???????? (Voice)
??????????????
9
????????????? (Digital Signal )
????????????? ???????????? ??????????? ???
?????? ???????????????????????? 2 ????? ???
?????? ??????????????????????????????? 1
????????????? ??????? 0
10
??????????????-?????????????????????
????? 3 ???
  • ??????????? (Simplex)
  • ???????????????? (Half-Duplex)
  • ????????? (Half-Duplex)

11
  • ??????????? (Simplex)

Simplex Transmission
12
  • ???????????????? (Half-Duplex)

Half-Duplex Transmission
13
  • ????????? (Full-Duplex)

Full-Duplex Transmission
14
???????????????????????
????????????????? (Communication
Channel ) ??????? ????????????????????????????
??????? 2 ???? ???????????????????????????????????
???????????????????? 2 ?????????
1.?????????????????????? (Bandwidth)
2.????????????? ???? ???????,???,????? , ??????
??????? ?????????????????????????????????????????
? 2 ???????
  • ???????? (Physical Wire) ?????????????????
    ????????? (Transmission Medium)
  • ???????????????????-????????? ???? Twisted-pair ,
    Coaxial Cable ,Fiber-optic Cable
  • ????????? (Wirless) ?????????????????
    ??????????????????????? ???? ?????????????

(Microwave) , ??????????????????? (Satellite),
???????????? (Infrared), ?????????? (Radio)
??? ????????? ???????
15
????????????????????????? (Physical Wire)
?????????????????????????????? ???????????????
  • Twisted-Pair Wire
  • ???????????????????????????? (Shielded Twisted
    Pair STP)
  • - ??????????????????
  • - ???????????????????????
  • - ???????????????????????? 600-800
    ????
  • ??????????????????????????? (Unshielded Twisted
    Pair UTP)
  • - ????????????????????????????????????????
  • - ????????????????????????????????????
  • - ???????????????????????? 400-600
    ????

16
??????????????????????????? UTP
???????????????????????????? STP
17
  • Coaxial Cable
  • ????????????? (Thin Coaxial ???? 10Base2)
  • - ?????????????????????????????????
    ????????
  • - ?????????????????????????????????????????
  • - ????????????????????
  • ????????????? (Thick Coaxial ???? 10Base5)
  • - ????????????????????????????
  • - ????????????????????????????????

18
Thick Coaxial
Thin Coaxial
19
  • Fiber-Optic Cable
  • ????????????????? (Fiber-Optic Cable )
  • ????????????????????????????????????
    ????? Core ????????????????????????????????????
    ????????????? ??????????????????? Cladding
    ??????? Core , Cladding ?????
  • ?????????????? (Coat) ????????????????????????????
    ????

20
??????????????????????????????????????????????????
????????????
21
?????????????????????????? (Wireless)
???????????????????????????????????? ?????????????
????????????????? ???????????????????????????????
???????????????????????????? ?????? ???????
22
  • ???????? (Microwave)

23
  • ???????? (Satellite)

24
  • ????????? (Infrared)

25
  • ?????????? (Radio)

???????????????? ???????????????????????????????
?? ???? ??????? ??????? , ????????????? ???????
????????????? ???? ????????? , ???????????? ??????
?
26
  • Bluetooth (Bluetooth Wireless)

27
  • ????????? (Cellular)

28
????????????????????????????
????????????????????????????????????????
??????????????????? ????????????????????????? ???
? ????????????????????????????????? 1 ????
  • ?????? (Modem Modulator Demodulator )

????????????????????????????????? 5
???? Internal Modem , External Modem , Wirless
Modem , PCMCIA MODEL , ADSL Modem
29
????????????????????????????
?????????????????????????????????????????????????
??????? ????????? ??????????????????? ?
????????????????????????????????? 1 ????
  • Modem (Modulator -Demodulator)
  • Internal Modem
  • External Modem
  • Wireless Modem
  • PCMCIA
  • ADSL Modem
  • Fax Modem
  • Multiplexer (Mux)

30
  • Modem (Modulator -Demodulator)
  • Internal Modem
  • External Modem

Internal Modem
External Modem
31
  • Wireless Modem

Wireless Modem
32
  • PCMCIAAirCard

AirCard
PCMCIA
33
  • ADSL Modem

ADSL MODEM
34
  • Fax Modem

FAX MODEM
35
  • Multiplexer (Mux)

Sepatare
Sepatare
Independent
Single
Independent
High-speed
Low - speed
Low - speed
Circuit
Circuit
Circuit
????????????????????? Multiplexer
36
????????????????
???????????????? (Network Device)
???????????????? 6 ???? ?????? ??????? ???????????
  • Repeater
  • Router
  • Hub
  • Switch
  • Gateway
  • Bridge

37
??????????????????????
?????????????????????????????????????????????????
???????????????????????? ????????????????????????
?? 2 ?????? ???
  • ???????????????????????? (Point to point)
  • ?????????????????????? (Multipoint)

38
  • ???????????????????????? (Point to point)

COMPUTER
COMPUTER
COMPUTER
39
  • ?????????????????????? (Multipoint)

COMPUTER
COMPUTER
SERVER
COMPUTER
40
???????????????????????????????
???????? (Protocol)
??????? ?????????????? ?? ???????????????? ?
?????????????????? ???????????????????????????????
??????????????????????????????????????????
?????????????????????????? ? ????????????????
  • TCP/IP (Transmission control Protocol Internet
    Protocol)
  • HTTP (Hyper Text Transfer Protocol)
  • FTP (File Transfer Protocol)
  • SMTP (Simple Mail Transport Protocol)
  • POP3 (Post Office Protocol-3)

41
?????????????????????????????
???????? ????????????????????????????????
??????????????????????????????????? 3 ??? ???
????????????
  • LAN (Local Area Network)
  • MAN (Metropolitan Area Network)
  • WAN (Wide Area Network)

42
  • LAN (Local Area Network)

??????????????????????? (?????????????) ????
??????? , ??????????????, ???? ???????????????????
?? ??????????????????????????? 30 ????
43
LAN (Local Area Network) ?????????????? 2
????????????
  • Peer-to-peer LAN
  • Client / Server LAN
  • Peer-to-peer LAN

44
  • Client / Server LAN

45
  • MAN (Metropolitan Area Network)

??????????????????????????? LAN
???????????????????????????????? 50 ????????
???? ???????????????????????????? ,
?????????????????????????????? ???. ??????????????
46
  • WAN (Wide Area Network)

???????????????????? ????????????????????????????
?????????????????????? LAN ??? WAN
(?????????????????????????? 100 ??????????
???????????????????????????????????????????
47
  • Internet

???????????????????????????????????
?????????????????????????????????
? ?????????????????????? ????????????????????????
??????????????????????????????????????????????????
?????????????????????????? ?????????????????
TCP/IP
48
  • IntranetExtranet

??????????????????????????? LAN ????????
??????????????????????????????????????????????????
??????????? ??????????????????????????????????????
???????????????????????????????
?????????????????????? 2 ???????
Intranet Extranet
49
  • Intranet

????????????????????????? Client ????
?????????????????? ? ??????????
Server ???????????????????????????????
50
  • Extranet

????????????????????????????????????????????
????????????????? 2 ?????????? ???????????????????
?????????????????????????????????? -
???????????????????????
51
NETWORK TOPOLOGY
Network Topology ?????????????????????????
????????????????? Server ?????????????????????
????????????? LAN ??????????? 5 ?????? ??????
  • BUS (Bus Network)
  • Star (Star Network)
  • Ring (Ring Network)
  • Mesh (Mesh Network)
  • FDDI (FDDI Network)

52
  • BUS (Bus Network)

53
  • Star (Star Network)

54
  • Ring (Ring Network)

55
  • Mesh (Mesh Network)

56
  • FDDI (FDDI Network)

57
?????????????????????????????????????????
???????????????????????????????
??????????????????????????????????????????????????
????????????????????????? ??????
  • Videoconference
  • Voice Mail
  • Fax
  • Groupware
  • EDI (Electronic Data Interchange)
  • GPS (Global Positioning System)

58
  • GPS (Global Positioning System)

59
????????? 5
  • ?????????? (Communication) ????????????????????
    ??? 2 ???????????
  • ???????????????? (Data Communication)
    ?????????????????????????? ???????????????????????
    ???????
  • ???????? ????????????????????????
  • ????????? (Telecommunication) ???????
    ?????????????????????????????????????? ?
  • ????????????????????????????? ??????????????
    ??????(Receiver) / ?????? (Sender) ??????/???????
  • ???????????? ??????????? 2 ???? ??????
    ?????????????? (Analog Signal) , ?????????????
  • (Digital Signal)
  • ??????????????????????? Physical Wire , Wirless
  • ????????????-????????? ?? 3 ??? Simplex ,
    Half-Duplex , Simplex
  • ?????????????????????????????? 2 ??? ???
    Point-To-Point , Multi-Point
  • ???????? ??? ?????????????????????????????
  • ?????????????????? LAN , MAN , WAN
  • Network Topology ??? ??????????????????????
    Client ?????????? Server
  • ????????????????????????????????????????????????
    ???????? ?????? Voice Mail ???????

60
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