Congestion Control & Flow Control

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Question Tags Difficulty Success

slow_startcongestion_avoidance +2

Medium 65%

flow_controlzero_window +2

Medium 89%

3. Silly Window Syndrome

silly_windowflow_control +1

Medium 79%

4. Explicit Congestion Notification

ecncongestion_signal +3

Medium 60%

5. Ssthresh Plus Three

congestion-windowfast-recovery +2

Medium 43%

6. Six Round Trips Back

slow-startretransmission-timeout +2

Medium 40%

7. Blaming The Network

flow-controlreceive-window +2

Medium —

8. Three Acks One Segment

tcpslow-start +2

Hard 66%

9. Third Duplicate ACK

fast-retransmitfast-recovery +2

Hard 57%

10. Ssthresh Plus Three

tcp-renofast-recovery +2

Hard 63%

11. Filling A Fat Pipe

bandwidth-delay-productwindow-scaling +2

Hard —

12. Latency Without Loss

bufferbloataqm +2

Hard —

13. The Link Came Back

spurious-timeoutrto +2

Hard 89%

slow_startcongestion_avoidancecwndcongestion_controlflow_controlzero_windowpersist_timersilly_windowecncongestion_signalrouter_markingnetworkingcongestion-windowfast-recoveryrenorfc-5681slow-startretransmission-timeoutrecovery-timeflow-controlreceive-windowzero-window-probedebuggingtcpack-divisionfast-retransmitssthreshtcp-renobandwidth-delay-productwindow-scalingthroughputbufferbloataqmqueueing-delayspurious-timeoutrtoeifelcongestion-control+1+2+3+4+5

Learning Resources

TCP/IP Illustrated, Volume 1: The Protocols, Chapters 14 - 14.7, 16.1 - 16.3

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