พิชชญา น้ำวน เทคโนโลยีสารสนเทศ

ЙІ� έ Џ Ж��Йέ БМϋ

Љ�ΰ ΰ ΄ М!Є�МГЄ

] m"  ₇   ę ċń₇ ₉ "⁄ Coaxial Cable)
  ₇    ğ ċ₇ ₉ "⁄ Coaxial Cable) ļ₁   ₇  ĕ     ₈   ₈   ċńē
 ₉  ļ₁  ċń₁ ć₇ ⁾ ⁾   ₁  ₈ ď ā ₇   ⁾ ₅ ć ⁹  ₈ ě ⁾ ĕ₇ " ₈  " " ⁹ ā₁  ĵ⁴ ⁴ ř ĕ₁
  ₇    ğ ěď ⁸ ē ā  ļ₁   ₇  ċń₉ ē  ⁾ ĕ₇  ĉ  ₈ ĕ  ₈ ď ā ₇   ⁾ ₅ ć ⁹  ₈ ě
₁  ĵ⁴ ⁴ ř ĕ₁ " ₇ ā 2 ₈ ğ⁹  ⁾ ₇ ĕ2 ⁾ ċ₈    ₈ ď ā ₇   2  ₈   ńċ₇ ĕ2 ē  ₇

 ₈  ₁ ċŏ ₇ ŗā
  ₇     ċ₇ ₉ "⁄ Coaxial Cable) ā ₁   ā⁴ ₈ ċ₇   ŏĕ₁  " ā   ₇ 
  ğ ě"⁄ Coax) ⁴ ⁾ ċ⁹ ĕ ₁ ĉ ₆ ₆ ľ  ₇ āŗ"^" ā ₁ "ĉ  ā "   ğ ě"⁾ ċ   ⁾  ⁾  ₇
 ā "s⁾ ċ  ₁ ₈ ā ⁾ ĕ₁ s"ėń2 ńď ğ      ⁾  ⁾  ₇  ā ⁹ ē₁ ₁ ĉ  ŏĕ2   2 ⁹ ĕ ⁾ ċ  ₁

₈ ā ⁾ ĕ₁ ₁ ĕń₁  2 "

https://techno.oas.psu.ac.th/content/ 124

  ₇ ŗā ć⁸  ₉ ċ₇  "⁄ twisted pair)  ⁹ ā₉ ŗā  ₇
  2  ⁸ 2 ⁴ ŗ ₅ ĕ₁ ĕ₁ ⁹  ⁾ ⁾  ⁹ ₈ ⁶  ₁ ₅ ńď ₉ ⁸   ₈
₈    ₁ ⁴    ₉ ńď₁  ⁾ ā ₉ ğ ₆ ₆ ľ ⁴   ŗā  ₇ ē 2 ċ₇ 2
 ₇ ₁   ć₉ ⁸ ċ₇  ĕ₁  ₈ ď ⁴    ₇ ₁   "₁ ďń 2 ⁴  
  ₇ āŗ ć⁸  ₉ ċ₇  ₁ ŏċ₇  ⁾  ē ĕ    ₆ ₆ ľ    ⁾ ċń ŗ2
₃ ā ₁ ⁸ ēė2 "] Z"Hz  ₈ ď "] Z"Hz ā₁ "  ₇ āŗ ć⁸  ₉ ńċ₇  "
] "āŗ"⁴   ⁾  ₈  ā2  ĕ     ċ₇ 2 ⁸ ēė2 "] ^"ā 2   2 "
 ĉ  ₈ ĕ  ĕ⁹ ₈    ₈  ā2 ē ⁾ ŗ₉ ₃ ā ₁   ₇ ŗā ć⁸  ₉ ċ₇  ⁴ 

ėŏ₁  ₇ ŗāĕ    ⁾  ₁   2   ₇ ⁸ ē ₇ "

 ā2 ē ⁾ ŗ₉ ⁸ ₇ ē ₉ ĕ   ₈   ē ₁  2   2 ₃ ā ₁
 ₉  ⁸  ē ₁  ⁸ ₉ ğ ""  ⁾  ₈  ā2 ē ⁾ ŗ₉ ⁸ ē₈ ğ ė2 "

^bpZZZ" ā  2   ₇ ŗā⁹ ċ ₉ ċ₇   ₉ ⁾ ďń
 ₈ ċ₇   ċ₇  ĕ   ₇  "   ċ₇ ₉ ""⁴ ⁾ ċ₁ ē"  ₁ ĕ  ċń

   ₉ ⁾ ċ   ⁾ ₁ ā ńď ď ₁   ₈ ₁  ā2 ē ⁾ ŗ₉
⁾     ā "" ₉ ₁   ₈ "₁  ā2 ē ⁾ ŗ₉ ⁴ ē₉ "   2  ńċ⁾ ċ
   ⁾ ₈ ğ  ċ₇   ā    ⁾ ₈ ğ  2   2 "" "  ē  ₈
₁  ā2 ē ⁾ ŗ₉ ₈  ⁸ ₈ ğ   ā   ₈ "₁  ā2 ē ⁾ ŗ₉ ₁   ₇

  2⁸ 2⁾ 

ЙІ� έ Џ Ђ� С�ΰС�Єέ МЏЖ�ЙЖМЏήЙ�ЌБ�
ϊ ЙЌЉГ�Оo ЙЏ�

⁾ ⁸ ğ⁾ "
⁄ Modem)

⁾ ⁸ ğ⁾ ⁴   ⁾  ₈  " 2  ₁  ē " ₈ ğ⁴ ⁸ ē⁸ ē ₇   ₈ ďń ⁾ ⁹ ā
₈   ā 2   ⁾ ₅ ć ⁹  ₈ ěē āŗ  ₇  2 " ₈ ⁰ ĕ₅  ě ₈ ₈ ⁾ ⁸  āŗ
 ₁ ėń2 ėń2 ⁾ ⁸ ğ⁾ ⁴  "   ₈   ₉ 2  ĕ    ⁸ ć⁴ ć⁹  ₉ "⁄ digital

signals) ⁴    ₈ ńď 2   ⁾ ₅ ć ⁹  ₈ ě" ē ļ₁  ĕ   
 ₁  ₉ ğ  "⁄ analog signals) ₅ ďń  ē  ⁾  ₈  ā2   ₁ ŗā  ₇

 ₈ ⁰ ĕ₅  ě"

К�Ѕ !ỤHub)

Hub Сΰ �СЄέ МЏОΰ�ЙЌo Й�ϊ ЙЌЉГ�Оo ЙЏО�ήМ�
έ �Ѕ Оϊ ЏЙ�ήМ�Ў!ώЛЌ!�ậЉЙЏo� !ỤPort)” Сΰ �
Оΰ�ЙЌo Й�ЏЛЗ ГМ�ϋ!Hub έ Ѕ� Оϊ Џ�Йϋ
ϊ ЙЌЉ�ГОo ЙЏ!�З Џ�ЙЙІ� έ Џ О�ϊ ЏЙ�ήМ�Ўo Г�
Й�Є!ẹ!Hub ώЛЂГЄЖ�΄ ΄ М ПБЛЖϋ�o Й�
ή�ЙЌБ�Є�ЄЙЙέ ТІ Ђ!�Оϊ Џ�Йϋϊ ЙЌЉГ�Оo ЙЏ�
Ђ�έ Оϊ Џ�ЙϋЂО�ΰ�ЙЌo �ЙЙЎ�έ Ѕ� !Hub

Оέ o ОГЎ�(Gateway)

 ļ₁  ř  ₈  ě ċń⁾ ċ   ⁾   ⁾  ₈  ŗ2  ř⁸
₁   ₈ ďń ⁾ ⁹ ā  ₈ ď ā ₇ ⁹ ā 2  ē
⁸ ē ₇ ĕ₁ ""⁾ ċ ₁ ē  ńċ₁ "  ₈ ďń ⁾ ⁹ ā  ₉ 
  ₉ 2 ē ⁾ ŗ₉ ₈   ā 2  ₈ ď ā ₇  ċń
 ⁹  ⁹ ā 2 ĕ₁  ĕŏ2 ₁  ā ₁  2  ₈ ⁹   ₉
 ₉    ĵ⁹ ₇  ₈ ₈ ⁾ " 2  ₈ ď ā ₇

Ѕ Џ� ώ!�Ụbridge)

⁾ ĕ ē₁   ₈ ďń ⁾ ⁹ ā  2  ₉ ₁ "⁄ LAN Segment)2  2 ē ⁸ ē ₇ ĕ₁ "
 "  ē  ⁾  ₈ ₇  ₇   ⁹ " 2 " ₈ ď ā ₇     ₈ ďń ₇  "⁸ ₇
 ńċ ₈   ć  ć  ₅ ₈  ⁾  2 ₈    ⁾ ā₉ ⁸ ₉ 2 ⁾   ₁ ĕ "⁸ ₇  ₈ ć⁸ ⁴ ě  ⁴
  ļ₁  ⁸ ē ĕŏ2 "  ₈ ě⁸   ₈ ě ⁷ ₅   " ₈ ď "  ₆   ₈ ě ₁   ₈ ńď 2
  ⁾ ₅ ć ⁹  ₈ ě" ₈ ć⁸ ⁴ ě⁴  "   ₈  ₈  2  ĕ     ₉  ā2 ₃ ā ₁  ₅ ğ
ğ⁹ "ē ⁾ ŗ₉  ₇ ĕ2  ā ₁ ⁹ ā 2  " 2 ₈    ₈ ď ā ₇

ėń2   ⁴ ⁴  ļ₁  ā ₁  2 ₈    ₈ ď ā ₇  ńċ⁾ ċ ₈ 2  ₈ ē 2 "   ĵ⁹ ₇  ₈ ₈ ⁾  ńċ ⁹  ⁹ ā 2 ĕ₁ ⁸ ē"
ā₁ " ₈ ć⁸ ⁴ ě  ⁾  ₈ ńď ⁾ ₇ 2  ā ₁  2 "Ethernet ē ĕ  ā ₁  2 "Token Ring ⁸ ē
 ₉ ė2  ⁾ ē ā ₈    ₈ ď ā ₇  ĕŏ2 ŗā⁴ ē ₈ ⁹   ₉  ċń ⁹  ⁹ ā 2 ĕ₁ " ₈ ć⁸ ⁴ ěğ₇ ĕ2  2
  ⁾  ₈ ₇  ₇ ē ₇  ₅ ğ "ğ⁹ ē ⁾ ŗ₉ ₈   ā 2 ₈    ₈ ď ā ₇  ŏĕ2   2 ⁸ ē ₇ āŗ⁸ ċ"

ОЏМОo ЙЏ�

(Router)

 ļ₁  ř  ₈  ě ńċ " 2  ₁  ₇ ŗā₁ ₈  ⁸ ĕ  ċń ŗ2   ā  ₈ ć⁸ ⁴ ě""
 "  ē  ⁾  ₈  ē₁   ₈ ńď ⁾ ⁹ ā ₈    ā 2 "

 ₈ ď ā ₇  ċńē ₈ ⁹   ₉  ₈ ď ā ₇ ⁹ ā 2 ĕ₁  ₉ 
  ⁾  ₈   "   ₈  ₈  2 ₉ ď  ⁷ ₅   ₁ ć⁸  2 ē ⁾ ŗ₉

 ńċ₈   ř ē ā " ē₃ ā ₁  ⁸ ē"" "  ēā ₇ ₉ ⁸  ĵ  
  ₈ ⁴ ₈  ⁴ ₈  ċńĕ ĕń2  2 ē ⁾ ŗ₉ " ₉  ₅ ćń⁾ ₈  ⁸ ĕ    ⁾

 ₉  ⁸ ĕ₇  2  ₈ ď ā ₇ ""₁   ⁴   ₁ ŏċ₈  ⁹  ₈ ě₇ ĕ2
  ⁾  ₈     ē₁   2   ₈  ā2 ē ⁾ ŗ₉  ċń ⁾    ⁾  ē

 ĕ⁹ ₁ ⁾ ĕ⁹ ć⁸ ē ₇ "

έ МЏ� Оΰ�ЙЌo �Й
Оϊ ЏЙ�ήМ�Ў

  ₈ ě⁸ ďń ⁾ ⁹ ā  ₈ ď ā ₇ " ₈ ď ₈ ċ₇   ā   ₈ ě⁸ "LAN  ļ₁
  ₈ ě⁸  ĉ  ₈ ĕ ⁹ ā  ₈ ďń 2 ₅ ċċ"ē ĕ   ₇   ć₉ "⁸ ĕ2 ₁ ŏĕ₁ ⁴ ė2
⁹ ē 2 ⁾ ċ₅  ₈ ě⁹  ĉ  ₈ ĕ  ċ₇    ₇    ⁸     ₁ ńė2  ċń⁴  ē"

 ₈ ď   ⁴ ⁾ ċ₅  ₈ ě⁹  ĉ  ₈ ĕ   ₇  ₉  ₇    ğ⁸ ē"ā₁ ⁾ ċ
₅  ₈ ě⁹  ĉ  ₈ ĕ   ₇     ċ₇ ₉ " ₉   ĉ  ₈ ĕ   ₇ āŗ⁹ ċ
 ₉ ċ₇  " ⁹ ā ĉ  ₈ ĕ   ₈ ě⁸ ₈ řā₁  ⁾ ā "⁾ ĕ ⁴   ₉ ď  ⁹ ā₅  ₈ ě⁹
 ĉ  ₈ ĕ   ₇ ŗā⁹ ċ ₉ ċ₇  ₅ ₈    ĵ⁴ ⁴ ř ĕ₁ ĉ ₉ ĕ2  ļ₁  ńċ₁ ć₇ ⁾ "
₁   ⁴   ₁ ŏċ₇ ĕ2 ⁾ ċ  ₈ ě⁸  ċń ĉ ⁾   ĉ  ₈ ĕ ē⁹ ā ĕ   ₇ ₇
 ē ₁ ĉ   2 ė2 ⁾ ĕ ⁴  ⁾ ċ₈     ₅ 2  ₉  ē⁷ ₅     2 2  ₁

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