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3
ก

        1
...
3.1         ก ก ก
3.2            !  " (Computer
Network)
3.3    0             1   2 (LAN)
                            2
3.1   ก ก ก



              3
ก ! " # ก
1.         ก          (Sender)
2.          ก          (Receiver)
3.      (Message)
4.   ก         ก    ก
       (Medium)
5. ! ! " (Protocol)
ก ! " # ก




            5
$ %&     ก
1. ก               %' &
   (Simplex Transmission)


                            6
2. ก                 %'        ก
  (Half Duplex Transmission)




                                   7
3. ก                 %'   !    ก
  (Full Duplex Transmission)
ก                           !%
   (         )* ก     )+      ( ก
, ก                  (+ - +      ก -
                          .        .!
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1. HH IJ K!L!2 (Digitals signal)
2. HH I     ก (Analog Signal)
1. HH IJ K!L!2
  (Digitals signal)
2. HH IJ            ก
  (Analog signal)
ก ก
    (Transmission media)
   2 ก40 ....
1. ก ,        (Guide media)
2. ก , 2       (Unguided media)
1.     ก ,
     (Guide media)
1.1 Twisted Pair (        + ก     )
     - UTP (Unshielded Twisted Pair)
     - STP (Shield Twisted Pair)
UTP (Unshielded Twisted Pair)
• +   #       + ก 2 +(/ 8
        '! (               &
     9 )ก(/ & !     %ก (Plastic Cover)
 :* ก ก         ก40 9 $+ #(
   /0     %# ก ; ก 55 0 ก
 9 ก / ก 02<<; =
STP (Shield Twisted Pair)
•     >      + ก40       ก ก      UTP
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     55 0 ก + = . 4              % ก
     ก    + $% & (Shield) #$# ก 0
     $ + >            2ก ก% ก +
              9 #$ UTP             18
1.2   , ก$   (Coaxial Cable)




                          19
กQI Jก ก           R J ก S TU
2 JK J V K           !ก S ก V K
R       W "2Xก TU J         TY ก
  HH I ก         2J       (thick) J
J      (thin) TZLLV ก [S
XกJ2 2K        UTP 2     Xกก J
     X !K K ก                        20
1.3 # ,ก ? ,   (Fiber-Optic)




                               21
กQI [ Jก _ J L   HH IJ !
` 2 Jก     2    !ก aก b cd 2 Jก
 L Xก V K L         !ก TY ก
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 HH I ก
2.      ก , 2
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                             23
ก       + 55 0    2 ก
2            < > ก + 55 0         ,
$+      +   =ก 9 ก )      + 55 0( * 2
      ก     ) ( * &        ) ก%& 55 0
     ก       :* . !&% <; ก ' - + ก +
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2.2   K 2




            25
ก          &     (   ?(
ก %& +        2ก
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 +ก      & + #(5+&     9 )ก
 ก,   #($& $ ก ก       .!
 ก' ,
                         26
VTก I" _      ก
1.       2 " ! (Terminal)
2. R Ka (Modem)
3.      2 HH I (Repeater)
4.            HH I (Amplifier)
                                 27
3.2            +     !%
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T RS ก S
                "                       !     "
•ก            ก (Resource) ก                !"ก #$ %& %
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.          +
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, ก $ +
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, ก $ +
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, ก $ +
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4.      + , -


                              38
ก
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1. / ก 0@ &, (Hard ware)
2. : < , (Soft ware)
3. ก     ?     (Media)
1. VTก I" Hard ware
 1.1   NIC (Network Interface Card)
 1.2   HUB
 1.3   Bridge
 1.4   Router
1.1 NIC (Network Interface Card)




                                   41
1.2 HUB




          42
1.3 Bridge




             43
1.4 Router




             44
2. Soft ware
         Tk! !ก
   ก NOS TU         !K         X `[S
 ก W " c! "W " S Novellls NetWare
 OS/2 LAN Server, Microsoft Windows NT
 Server, Microsoft Windows NT 2000,
 AppleShare, Unix, Linux TU              45
3. ก             _
    ก 2[S[                               X
TU K  S !K S                 Coaxial, UTP
(Unshielded Twisted-Pairs),       W     "pW
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LAN
L_ กK
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[ TZLLV K ก        r [           a ! L ก 10
Mbps d TU 100 J       1000 Mbps ก
cd Xก [Sก ก                  K[ H s
(Image) 2           2         [ K
L ! (Real-time) S   s         J
•         % (Token Ring)
    > ก  + LAN # ,    ,( (Ring) &
 %A   / ก +        , Token-passing
!B * & %4 2         1        1 16 Mbps
9/& +     Token-Ring )         #& ( *
   & ,( 9 2 +       , ? 2 +2&
'"0 *( Token Ring
F FDDI (Fiber Distributed Data Interface)
  TU       0 ก                  RK [S
Fiber optic cd     X          K2     a
  Xd 100 Mbps 2 ก Fast Ethernet TU
J J            2L [S TU backbone 2 S
     LAN       b     K ก               54
T J *( FDDI
F            LAN       (Wireless LAN)
                 LAN              2 u
         !2 V[ ก          S 2           L
     ! 2 " a `                d 22_ 2
    S      ` R Ka KL ก2Vก [
    J J ! I              Lก        !2 V
      VI      ![ ก 2 V2    ! กK           bKK
'"0 *( Wireless LAN
_X 2              2
1. ( $" -ก > 8 U < (ก & < '5 (                  @ 67 $
" -ก >* -) > ( .( G@>
2. @*< (ก &       %ก%&" -6E -) > (
3. & ก5 ( ก &         %ก%&" -6E -) > ( 075-5กV#- %< *%
< 6 % ()
4. " -6E < (6 <            @ 67 $ %ก%&" -6E -) > (
5. '"0>>< (ก 6 & 7 < ( ->>6 < %ก%&" -6E .( G@>
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การสื่อสารข้อมูลทางคอมพิวเตอร์

  • 1. 3 ก 1
  • 2. ... 3.1 ก ก ก 3.2 ! " (Computer Network) 3.3 0 1 2 (LAN) 2
  • 3. 3.1 ก ก ก 3
  • 4. ก ! " # ก 1. ก (Sender) 2. ก (Receiver) 3. (Message) 4. ก ก ก (Medium) 5. ! ! " (Protocol)
  • 5. ก ! " # ก 5
  • 6. $ %& ก 1. ก %' & (Simplex Transmission) 6
  • 7. 2. ก %' ก (Half Duplex Transmission) 7
  • 8. 3. ก %' ! ก (Full Duplex Transmission)
  • 9. !% ( )* ก )+ ( ก , ก (+ - + ก - . .! ( - & - + + -+ / ก 0 % 1ก %ก ( !% 2 !% 9
  • 10. . 55 0 2 ก40 .... 1. HH IJ K!L!2 (Digitals signal) 2. HH I ก (Analog Signal)
  • 11. 1. HH IJ K!L!2 (Digitals signal)
  • 12. 2. HH IJ ก (Analog signal)
  • 13. ก ก (Transmission media) 2 ก40 .... 1. ก , (Guide media) 2. ก , 2 (Unguided media)
  • 14. 1. ก , (Guide media) 1.1 Twisted Pair ( + ก ) - UTP (Unshielded Twisted Pair) - STP (Shield Twisted Pair)
  • 16. • + # + ก 2 +(/ 8 '! ( & 9 )ก(/ & ! %ก (Plastic Cover) :* ก ก ก40 9 $+ #( /0 %# ก ; ก 55 0 ก 9 ก / ก 02<<; =
  • 18. > + ก40 ก ก UTP , + 8 ; ก 55 0 ก /0 % > ก # ก ; ก 55 0 ก + = . 4 % ก ก + $% & (Shield) #$# ก 0 $ + > 2ก ก% ก + 9 #$ UTP 18
  • 19. 1.2 , ก$ (Coaxial Cable) 19
  • 20. กQI Jก ก R J ก S TU 2 JK J V K !ก S ก V K R W "2Xก TU J TY ก HH I ก 2J (thick) J J (thin) TZLLV ก [S XกJ2 2K UTP 2 Xกก J X !K K ก 20
  • 21. 1.3 # ,ก ? , (Fiber-Optic) 21
  • 22. กQI [ Jก _ J L HH IJ ! ` 2 Jก 2 !ก aก b cd 2 Jก L Xก V K L !ก TY ก J ก H HH I K 2 HH IK 2 ก RK HH I ก
  • 23. 2. ก , 2 (Unguided media) 2.1 2 < 23
  • 24. + 55 0 2 ก 2 < > ก + 55 0 , $+ + =ก 9 ก ) + 55 0( * 2 ก ) ( * & ) ก%& 55 0 ก :* . !&% <; ก ' - + ก + 2 <!
  • 25. 2.2 K 2 25
  • 26. & ( ?( ก %& + 2ก = )* ? ก $+ &% +ก & + #(5+& 9 )ก ก, #($& $ ก ก .! ก' , 26
  • 27. VTก I" _ ก 1. 2 " ! (Terminal) 2. R Ka (Modem) 3. 2 HH I (Repeater) 4. HH I (Amplifier) 27
  • 28. 3.2 + !% (Computer Network)
  • 29. T RS ก S " ! " •ก ก (Resource) ก !"ก #$ %& % '( ก )* + ," -, * . / $*0 $ (Hard ware) 5()" )* ก6 & (. ก) 7 ( % !"ก #$6,5 %8 !ก 9 .!* • ก ):5$ ก 6"; ก 6< =(< '505-0>("? < '5< (6 & ( @ 67 $7 *กA)* %&6 & 7 ก B* ) 7 ( 0C *@ ก$, !"ก #$6กA>< '50>> & ก B < '5 6 ก B < '56"; 7
  • 30. + !% (Computer Network) 1. + 8! (LAN) 2. (MAN) 3. ก (WAN) 4. INTERNET 30
  • 31. . + 1. + 8! (LAN) 31
  • 32. . + 2. + (+ (MAN) 32
  • 33. . + 3. + 2ก (WAN) 33
  • 34. . + 4. INTERNET 34
  • 35. , ก $ + + (Network topology) 1. ก S J K 35
  • 36. , ก $ + + (Network topology) 2. ก $ + + , 36
  • 37. , ก $ + + (Network topology) 3. ก $ + + , ,( 37
  • 38. , ก $ + + (Network topology) 4. + , - 38
  • 39. + 1. / ก 0@ &, (Hard ware) 2. : < , (Soft ware) 3. ก ? (Media)
  • 40. 1. VTก I" Hard ware 1.1 NIC (Network Interface Card) 1.2 HUB 1.3 Bridge 1.4 Router
  • 41. 1.1 NIC (Network Interface Card) 41
  • 42. 1.2 HUB 42
  • 45. 2. Soft ware Tk! !ก ก NOS TU !K X `[S ก W " c! "W " S Novellls NetWare OS/2 LAN Server, Microsoft Windows NT Server, Microsoft Windows NT 2000, AppleShare, Unix, Linux TU 45
  • 46. 3. ก _ ก 2[S[ X TU K S !K S Coaxial, UTP (Unshielded Twisted-Pairs), W "pW ! L TU !2 V2[Sก Wireless LAN
  • 47. L_ กK • ก 6 % ก < '5 ):5$C ->>6 < 8 .- % 6 A %& ก ก 6 % ก < '5ก>/ $**@ ก$ 6 & (< (7 6 ( 6 & (. ก< .+ ก*< ( DD #05- - - ( %& ก (< '5 • ก 0>( กก 8 .) ก 8 9 )* % * ..-7 ( @ 6 & %ก 6 % ก ก 6*% ก . ก @ 67 $ 2 6 & ( 6 ก &( @ $ • ก *'05 ->> "5 *E < (6 < 8 % กก ก *'056 & ( @ 67 $ %& + ( 7 6*% 6 -.- %B ก %&.- 'กC' & 0 >6< 6 < '5 )*. ก,5 9 %&
  • 48. 3.3 0 1 2 (LAN)
  • 49. " + 8! F 2 " a (Ethernet) a TU ก a VK2 2_ K[ ก I2 VT [Kb 2_ [ a K RK [ 2_ L ! b X2_ K TZLLV 2[Sก 10, 100, 1000 ก ! ! 2
  • 50. 10Base-5 6A %& @G% ( DD # T , < ( , 075-7
  • 51. FW " 2 " a J Gigabit Ethernet [ TZLLV K ก r [ a ! L ก 10 Mbps d TU 100 J 1000 Mbps ก cd Xก [Sก ก K[ H s (Image) 2 2 [ K L ! (Real-time) S s J
  • 52. % (Token Ring) > ก + LAN # , ,( (Ring) & %A / ก + , Token-passing !B * & %4 2 1 1 16 Mbps 9/& + Token-Ring ) #& ( * & ,( 9 2 + , ? 2 +2&
  • 53. '"0 *( Token Ring
  • 54. F FDDI (Fiber Distributed Data Interface) TU 0 ก RK [S Fiber optic cd X K2 a Xd 100 Mbps 2 ก Fast Ethernet TU J J 2L [S TU backbone 2 S LAN b K ก 54
  • 55. T J *( FDDI
  • 56. F LAN (Wireless LAN) LAN 2 u !2 V[ ก S 2 L ! 2 " a ` d 22_ 2 S ` R Ka KL ก2Vก [ J J ! I Lก !2 V VI ![ ก 2 V2 ! กK bKK
  • 58. _X 2 2 1. ( $" -ก > 8 U < (ก & < '5 ( @ 67 $ " -ก >* -) > ( .( G@> 2. @*< (ก & %ก%&" -6E -) > ( 3. & ก5 ( ก & %ก%&" -6E -) > ( 075-5กV#- %< *% < 6 % () 4. " -6E < (6 < @ 67 $ %ก%&" -6E -) > ( 5. '"0>>< (ก 6 & 7 < ( ->>6 < %ก%&" -6E .( G@> 6. ( $" -ก >< ( ->>6 < % -) > ( .( G@>