computer question(network server sys).. pls help :)

• dark_snowboy

  19 Jun 05, 16:27

  CDMA/CD uses which one of the following techniques to control collisions?
  
  Nodes broadcast a warning before they transmit.
  Nodes listen for a clear line before they transmit.
  Nodes request and are given control of the medium before transmitting.
  Random time for nodes to send out signals.
  
  i feel thats its the 1st 1..
  
  
• alexkusu

  19 Jun 05, 16:29

  1 & 2...4 is rare
• shade343

  19 Jun 05, 16:31

  woah...so hardworking ah?
• dark_snowboy

  19 Jun 05, 16:34

  Originally posted by alexkusu:

  1 & 2...4 is rare

  y not 4? coz u send by a random timing then can avoid i thought?
  1 and 2 ya, i feel that its possible..but can choose 1 ans only lei