Computer Networks - Physical and Data Link Layer
In a sliding window protocol with window size 3, if the sender has sent frames 1, 2, and 3, and receives an acknowledgment for frame 1, which frames can it send next?
In a sliding window protocol with window size 3, if the sender has sent frames 1, 2, and 3, and receives an acknowledgment for frame 1, which frames can it send next?
medium📝 Analysis Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand sliding window movement
ACK for frame 1 means window slides forward by one frame.Step 2: Calculate next frames to send
Frames 2 and 3 are still unacknowledged; window size is 3, so after sliding forward by one, frames 4 and 5 can be sent.Final Answer:
Frames 4 and 5 -> Option CQuick Check:
Sliding window advances by ACKed frames [OK]
Quick Trick: ACK moves window, allowing next frames send [OK]
Common Mistakes:
MISTAKES- Sending multiple frames beyond window
- Resending unacknowledged frames unnecessarily
- Waiting for all ACKs before sending
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