294   _________   ___________________________ Internet



OSPF (Open Shortest Path Fisrt)      -
  " "



PDU (Protocol Data Units)    

PING (Packet Internetwork Groper)     "IP-
"  

POPS (Post Office Protocol version 3)   ,  3

 (Point-to-Point Protocol)      


PTCL (ProToCoL)    

R

RARP (Reverse Address Resolution Protocol)    -
 :   IP-   MAC

RFC (Requests For Comments)     
     TCP/IP

RIP (Routing Information Protocol)     

RPC (Remote Procedure Call)   ( )  


RR (Record Route)   IP-,   -
  

RR (Resource Record)      (  DNS)

RS-232      

RSVP (ReSerVation Protocol)    

RTCP (Real Time Control Protocol)     -
   

RTF (Real Time Protocol)       

S

SA (Security Association)      
 

SFTP (Simple File Transfer Protocol)     