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Q. Show the Drawbacks of Go-back-N?
Drawbacks of Go-back-N
- Inefficient
- Every out of order received packets are discarded (receiver side is simplified)
- This is a trouble in a noisy link
- Many frames should be retransmitted -> bandwidth consuming
- Solution
- Re-send merely the damaged frames
- Selective Repeat ARQ
- Avoid unnecessary retransmissions
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