Why does network congestion occur?

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Tags

1. #bandwidth
2. #partially
3. #which
4. #protocol
5. #congestion
6. #state
7. #exceeds
8. #traffic
9. #retransmission
10. #insufficient
11. #initial
12. #network
13. #aggressive
14. #countered
15. #capacity
16. #maintains
17. #occurs
18. #packet
19. #after
20. #reducing