 7.     FTP 247

 "User-DTP"  ,    (User Data
Transfer Process)     FTP   "
"     "User-PI".   -
       "Server-DTP".

 "Server-PI"        
(Server Protocol Interpretator)   " ".

 "Server-DTP"  ,     
 (Server Data Transfer Process) no  " ".

 " FTP"  ,   FTP-.  -
      "Server-PI"  , -
   "Server-DTP".

 " FTP"    FTP.    
   "User-PI"  ,  -
 - "User-DTP".

	<>		 	( User ^ \ Interface /( User PI ) ( User DTP )	<	
						
					<^	
						
		[ Server PI ]				
			 			
						   
  						
						

 FTP
. 7.1.   FTP

 FTP

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

   FTP (. 7.1)   :

1.  FTP       TCP
 21,        
 FTP-.