Abstract: 1. One-to-Many or Multicast : This type of service is very well known, and several applications belong to this class. These include document distribution, on-demand video distribution, network news distribution, and file distribution and caching. 2. Many-to-One: This type of service corresponds to data delivered from a group of users to a single destination. Applications of this type include resource discovery, data collection at a central location, auctions, group polling, and accounting. 3. Many-to-Many : In this type of service, several user...
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