2. COMPUTER NETWORK)

3. LAN (LOCAL AREA NETWORK)
MAN (METROPOLITAN AREA NETWORK)
WAN(WIDE AREA NETWORK)
LAN (LOCAL AREA NETWORK)
MAN (METROPOLITAN AREA NETWORK)
WAN (WIDE AREA NETWORK)
WORLD WIDE
DIAL UP/
LEASED LINE/ ISDN)

5. 






6. PEER TO PEER
CLIENT SERVER
 Peer to Peer Network
Peer)
Client Server
Peer to Peer
Workgroup) Windows 98/Me XP
 Client-Server
-
peer to peer client-server
server

7. 1. ETHERNET/ FAST ETHERNET/ GIGABIT ETHERNET
2. WIRELESS LAN
ETHERNET / FAST ETHERNET / GIGABIT ETHERNET LAN
LAN
GBPS
UTP FIBER OPTIC
WIRELESS LAN

8. WIRELESS
 IEEE 802.11 GHz
Mbps
 IEEE 802.11b GHz
Mbps / 22Mbps
 IEEE 802.11a GHz, 5.47～
5.725GHz Mbps
 IEEE 802.11g GHz
Mbps
 IEEE 802.11n GHz / 5GHz
Mbps

9.  Ad-Hoc)
Access Point

10. 
Access Point)
Access Point

11. PROTOCOL)

12.  Syntax Format) Structure)
address)
syntax
 Semantics
syntax
 Timing
Mbps Mbps

13. STANDARD)
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

14.  physical layer)
 data link layer)
node) 2
 network layer)
 transport layer)
 session layer)
-
-
module)
 presentation layer)

15. 
TCP/IP, FTP, HTTP HTTPs

16. TCP/IP (TRANSMISSION CONTROL
PROTOCOL/INTERNET PROTOCOL)
ARPANET
TCP/IP


-


17. HEADER HEADER
ENCAPSULATE
HEADER
DEMULTIPLEXING

18. ENCAPSULATION/DEMULTIPLEXING
TCP/IP

19. IP
THE
INTERNET LAYER)
PACKET-SWITCHING NETWORK)
CONNECTIONLESS)
PACKET)

20. MESSAGE TCP
UDP (USER
DATAGRAM PROTOCOL) CONNECTIONLESS)
CLIENT/SERVER
SYSTEM) REQUEST/REPLY)
VOICE)
APPLICATION LAYER)
TELNET
FTP
SMTP

21. FTP
 FTP
USER) User Interface
FTP FTP PI
(Protocol Interpreter module)
DT (Data Transfer module)

22. HTTP(HYPER TEXT TRANSPORT PROTOCOL)

HTTP
end-
user)

23. HTTPS(HYPERTEXT TRANSFER PROTOCOL SECURITY
)
 HTTP protocol
server client
Netscape
-
-

24. NETWORK
TOPOLOGY)

26. POINT-TO-POINTCONNECTION)
MULTIPOINT CONNECTION)
POINT-TO-POINT)
MULTIPOINT)

27. BUS TOPOLOGY
backbone coaxial
terminator
-

28. BUS


 Star



 Terminator


29. RING-TOPOLOGY


30. STAR-TOPOLOGY
HUB)
 Star
•
•
Bus
hub switch
Bus Hub

31. 
 Transmission Media)
 Hardware)
 Software)

33. ROUTER)

LAN WAN

34. SWITCH

 Bandwidth 10/100/1000 Mbps


35. HUB

 Bandwidth 10/100/1000 Mbps


36. HUB SWITCH
 Hub Hub
Hub
Switch
Switch
Hub
 Hub Repeater)
Switch

37. ETHERNET CARD

Switch Hub
 Bandwidth 10/100/1000 Mbps

38. ETHERNET CARD
 LNK LINK
 MB/s
MB/s
 ACT (Activity) -

39. MODEM

 Bandwidth 56 Kbp

40. ACCESS POINT

wireless)
 Bandwidth 11/54 Mbps

41. WIRELESS CARD

 Bandwidth 11/54 Mbps

42. UTP (UNSHIELDED TWIST PAIR)
 Ethernet Switch
Hub
 Bandwidth 10/100/1000 Mbps

 m

43. UTP RJ-45
 UTP Ethernet Lan RJ-45
 UTP

44. RJ-45
 A (Standard 568A)








45.  B (Standard 568B)








46. UTP RJ-45
 UTP Straight Cable)
Hub Switch
A B
 UTP Cross-over Cable)
Hub
Switch
Router (

47. UTP STRAIGHT CABLE)

48. UTP CROSS-OVER CABLE

49. STP (SHIELDED TWISTED PAIR)
 UTP
UTP
 UTP

50. FIBER OPTIC

 Bandwidth 10/100/1000 Mbps
 m – 2Km

51. Duplex
 Half Duplex
Ethernet
BaseT (10Mbps)
 Full Duplex
Fast
Ethernet (100Mbps) Gigabit Ethernet
(1000Mbps)

54. 

digital





55. 




56. WIRELESS LAN)

 Wireless LAN WLAN)

57. 
 Mobility)




58.  PC Notebook
Pocket PC PCMCIA

Cisco, Orinoco, Toshiba, 3Com, Linksys
 Access Point) :
LAN

59.  Ad-Hoc)
Access point)
 Infrastructure)
Access point)

60.  WPAN (Wireless Personal Area Network)
IR
(Infra-Red) Bluetooth
 WLAN (Wireless Local Area Network)
 WMAN (Wireless Metropolitan Area Network)

61.  FireWall)

 User Name and
Password)
 WEP (wired equivalency privacy
key)
 Wi-Fi Protected Access (WPA)

63.  ipconfig ->
 Ping ->
 Nslookup ->
 Traceroute ->

64. .6/7