 2.   TCP/IP 97

(    ""   <_ 

 ""	<>	""
		

. 2.27.   ,     
"  "

,  ,    "", 
   "", . ""     ,
  ""    ""     -
.   "" ,      "",    
      ""     
  ""  "".      . 
,  "" ,  ""     ""  
,         -
,  ,       3  
 ""  . .        -
    ...     
"  ".

     ,     -
  .     -
   RIP.     15, 
   .    16, 
 ,   ,     , 
      .    
   .  ,   
 "Η"       
   .

    (hold-downs)

      , -
       -
   ,   .  -
  ,    , -
        -
,    .     -
      .

 ,  - ,    
  -   ,   
  (  ,    ,  
 )   ,     -
     .       
 (, , )   -