The document discusses various components of computer networks and data communication, including network topologies, transmission modes, communication media such as wired and wireless, networking devices such as hubs, switches, routers, and modems, and Ethernet standards for local area networks. Common network topologies are also defined, such as bus, star, ring, mesh and tree configurations, along with the characteristics of each. Cabling such as UTP, coaxial and fiber optic are described as well as Ethernet standards for wired networks.

1. BY
KOO …WASANA

4. (Data
Communication)
• -
(Computer Network)

5. • (Sender)
• (Receiver)
• (Data)
• (Media)
,
• (Protocol)

7. •
(Analog Signal)
(Sine
Wave)
(Hertz)
• (Digital
Signal)

8. • Modulation
Demodulation
•
Modulation
•
Demodulation
•
MODEM

9. Modem

10. Modem
• (External Modem)
(Serial
Port)
• (Internal Modem)
• (Wireless Modem)

11. •
(Point-to-
Point)
•
(Multipoint)

12. Data
Transmission
•
(Serial Data
Transmission)
•
(Parallel Data
Transmission)

13. Transmission Mode
• (Simplex
Transmission)
• (Half-
Duplex Transmission)
• (Full-
Duplex Transmission)

14. Communication Media
• (Wired Media)
– (Twisted-Pair Cable)
– (Coaxial Cable)
– (Optical Fiber Cable)
• (Wireless Media)
– (Radio Wave)
– (Terrestrial
Microwave)
– (Satellite
Communication)

15. Communication
• Media (Twisted-Pair Cable)

16. Communication
• Media (Coaxial Cable)

17. Communication
Media
• (Optical Fiber
Cable)

18. Communication
Media
• (Radio Wave)

19. Communication
Media
• (Terrestrial
Microwave)

20. Communication
•
Media (Satellite
Communication)

21. •
–
E-mail),
MSN, ICQ), ,
FTP ,

22. •
– Bit 0 1
– Bandwidth
bps (
)

23. • Router
•
LAN
WAN

24. • Switch
•
• Bandwidth
10/100/1000 Mbps
•

25. • Hub
•
• Bandwidth
10/100/1000 Mbps
•

26. • Hub Switch
– Hub
Hub
Hub Switch
Switch
Hub
– Hub

27. • Ethernet Card
•
Switch Hub
• Bandwidth
10/100/1000 Mbps

28. • Ethernet Card

29. •
Ethernet Card
– LINK

10 MB/s 100
MB/s
 ACT (Activity)
-
,

30. • Modem •
Internal Modem • Bandwidth 56
Kbps
External Modem

31. • Access Point
•
(wireless)
• Bandwidth 11/54
Mbps

32. • Wireless Card
PCMCIA •
• Bandwidth
PCI for PC 11/54
USB Mbps

33. • UTP (Unshielded Twisted Pair)
•
Ethernet Switch
Hub
• Bandwidth
10/100/1000 Mbps
•

34. • UTP RJ-45
– UTP Ethernet Lan
RJ-45
– UTP
UT RJ-
P 45

35. • RJ-45
– A (Standard 568A)
• /
•
• /
•
• /
•
• /
•

36. – B (Standard 568B)
• /
•
•
•
• /
•
• /
•

37. • UTP RJ-45
– UTP Straight Cable)
Hub
Switch
A B
– (UTP Cross-over Cable)
Hub

38. RJ-45

39. RJ-45

40. • UTP
Straight Cable)

41. • (UTP
Cross-over Cable)

42. • UTP
– -

43. – 2.
A B)
1.7

44. –
RJ-45

45. • STP (Shielded Twisted Pair)
• UTP
UTP
• UTP

46. • Fiber Optic
•
• Bandwidth
10/100/1000 Mbps
•
500m – 2Km

47. •
Duplex
– Half Duplex
Ethernet BaseT
Mbps)

49. • 3
– LAN (Local Area Network)
– WAN (Wide Area Network)
– MAN (Metropolitan Area
Network)

50. LAN (Local Area Network)
•
Ethernet, Fast
Ethernet, FDDI, Token Ring

51. WAN (Wide Area Network)
• Lan
Lan
ATM, DSL, ISDN
Lan

52. Man (Metropolitan Area Network)
•
Wan
Lan

53. – Ethernet/Fast
Ethernet/Gigabit Ethernet
Lan
– Wireless Lan

54. Ethernet
• LAN
10Gbps UTP
Fiber optic

55. • Ethernet
10BaseT 100 m UTP 10 Mbps
100BaseTX 100 m UTP 100 Mbps
100BaseFX 400 m (half duplex) Fiber Optic 100 Mbps
2000 m (full duplex)
1000BaseSX 220 m Fiber Optic 1000 Mbps
(MMF)
1000BaseLX 3-10 Km Fiber Optic 1000 Mbps
(SMF)

56. •
Ethernet
UTP Ethernet CardFiber Optic

57. Wireless Lan
ISM
band

58. • Wireless
– IEEE 802.11 b
• Bandwidth 11 Mb/s
• 100 m.
– IEEE 802.11 g
• Bandwidth 54 Mb/s
• 50 m.

59. •
– (Ad-
Hoc)
Access Point

60. –
Access
Point
Access Point

62. – Mesh
– Bus
– Star
– Tree
– Ring

63. Mesh
(Full
Mesh)

64. Mesh
–
•
–
•
•

65. Bus

66. Bus
–
•
• Star
–
•
• Terminator

67. Star

68. Mesh
–
•
•
•
–
• Bus
• hub switch

69. Tree
–
Bus
Star
Star

70. Star
–
• Star
Star
–
•
• Hub
•

71. Ring

72. Ring
– Ring
•
•
Ring
•
– Ring
•