Principles of reliable data transfer o important in app. transport, link layers o top-10 list of important networking topics COO sending recelver process process data data Reliable channel rat send()↓四 a ata deliver_data( reliable data reliable data transfer protocol transfer protocol (sending side) (receiving side uand0四[wxt- dt rcv( Unreliable channe (a) provided service (b) service implementation o characteristics of unreliable channel will determine complexity of reliable data transfer protocol (rdt 3: Transport Layer 3a-103: Transport Layer 3a-10 Principles of Reliable data transfer  important in app., transport, link layers  top-10 list of important networking topics!  characteristics of unreliable channel will determine complexity of reliable data transfer protocol (rdt)