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handshaking

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handshaking


  3  definitions  found 
 
  From  WordNet  r  1.6  [wn]: 
 
  handshaking 
  n  :  grasping  and  shaking  a  person's  hand  (as  to  acknowledge  an 
  introduction  or  to  agree  on  a  contract)  [syn:  {handshake}, 
  {shake},  {handclasp}] 
 
  From  Jargon  File  (4.2.3,  23  NOV  2000)  [jargon]: 
 
  handshaking  n.  [very  common]  Hardware  or  software  activity 
  designed  to  start  or  keep  two  machines  or  programs  in  synchronization  as 
  they  {do  protocol}.  Often  applied  to  human  activity;  thus  a  hacker  might 
  watch  two  people  in  conversation  nodding  their  heads  to  indicate  that 
  they  have  heard  each  others'  points  and  say  "Oh,  they're  handshaking!". 
  See  also  {protocol}. 
 
 
 
  From  The  Free  On-line  Dictionary  of  Computing  (13  Mar  01)  [foldoc]: 
 
  handshaking 
 
  1.  Predetermined  hardware  or  software  activity  designed  to 
  establish  or  maintain  two  machines  or  programs  in 
  synchronisation.  Handshaking  often  concerns  the  exchange  of 
  messages  or  {packet}s  of  data  between  two  systems  with  limited 
  {buffer}s.  A  simple  handshaking  {protocol}  might  only  involve 
  the  receiver  sending  a  message  meaning  "I  received  your  last 
  message  and  I  am  ready  for  you  to  send  me  another  one."  A 
  more  complex  handshaking  {protocol}  might  allow  the  sender  to 
  ask  the  receiver  if  he  is  ready  to  receive  or  for  the  receiver 
  to  reply  with  a  negative  acknowledgement  meaning  "I  did  not 
  receive  your  last  message  correctly,  please  resend  it"  (e.g.  if 
  the  data  was  corrupted  en  route). 
 
  {Hardware  handshaking}  uses  voltage  levels  or  pulses  on  wires 
  to  carry  the  handshaking  signals  whereas  {software 
  handshaking}  uses  data  units  (e.g.  {ASCII}  characters)  carried 
  by  some  underlying  communication  medium. 
 
  {Flow  control}  in  bit-serial  data  transmission  such  as 
  {EIA-232}  may  use  either  hardware  or  software  handshaking. 
 
  2.  The  method  used  by  two  {modem}s  to  establish  contact  with 
  each  other  and  to  agreee  on  {baud  rate},  {error  correction} 
  and  {compression}  {protocol}s. 
 
  3.  The  exchange  of  predetermined  signals  between  agents 
  connected  by  a  communications  channel  to  assure  each  that  it 
  is  connected  to  the  other  (and  not  to  an  imposter).  This  may 
  also  include  the  use  of  passwords  and  codes  by  an  operator. 
 
  [{Jargon  File}] 
 
  (1995-01-13) 
 
 




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