Sequence Numbers (cont.) SEQUENCE NUMBERS MUST ALSO BE INCLUDED IN ACKS. TO USE THE NETWORK EFFICIENTLY, SEVERAL MESSAGES MAY BE SENT BEFORE ANY ACKNOWLEDGEMENTS ARE RECEIVED. SINCE ACKS MAY BE LOST, EACH ACK MUST BE LABELED WITH THE SEQUENCE NUMBER OF THE MESSAGE IT ACKNOWLEDGES.

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This page is part of a section of lecture slides related to " Retransmission Techniques " within the topic "Data Delivery Obstacles". Other slides within this section and other sections of slides for the topic "Data Delivery Obstacles" can be accessed using the links below. Retransmission Techniques Acknowledgements and Retransmission Retransmissions and Timeouts Sequence Numbers Sequence Numbers (cont.) Message Reordering Reliability and Connections A Reliable Delivery Problem Cautious Generals Solving the General's Problem Solving the General's Problem (cont.) Connections Establishing Connections Persistent HTTP Connections Network Congestion Packet Loss and Congestion Congestion and Transmission Rate Congestion and TCP Connections Finding the Bottleneck Rate TCP Transmission Rate Adjustment Error Detecting Codes Damagaged Data Symbols and Meaning Interpreting Binary Symbols Evaluating Codes Error Detecting Codes Parity Codes for Error Detection Multiple Bit Errors Interleaved Transmission Error Correcting Codes Any Guesses? Digital Recording on Compact Discs Two-dimensional Parity Bits Spatial Interleaving