2. Core)
UTP : Unshielded Twisted Pair)
STP : Shielded Twisted Pair)

3.  UTP
UTP
Plastic Cover)

4.  STP
Shield)
UTP
STP
UTP

6. 








7. 

 twisted
pair


 twisted pair

twisted pair


8.  ?
 ?

9. 


twisted pair

10.  http://www.kmitl.ac.th/~kpteeraw/data_com/dataco
m_52/html/utp.htm
 http://www.maceducation.com/e-
knowledge/2428102100/01.htm