278     4          

 link test,      16 .    -
     ,   link test  -
     ,      
   .

 ,    Ethernet  Fast Ethernet -
  .

    .      ,
 ,   ,   ,  ,
      ,  . -
   :   ,   
( 1518    64 ),   .

  .   ,   -
       60  ,   .  -
     .

   (jabber).    ,  -
      .    
      3 ,   .

  

         
 FDDI,       -
       . , -
 Ethernet/Fast Ethernet     
 .        -
,      .    -
   ,    ,
        (. 4.7).   - 
  (  ),  
   .

 
 

. 4.7.     Ethernet

       -
      , ,  
    ,    
 .         .