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Retransmission of packets must not be done when _______

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Retransmission of packets must not be done when _______

(a) Packet is lost

(b) Packet is corrupted

(c) Packet is needed

(d) Packet is error-free

This question was addressed to me by my college professor while I was bunking the class.

Origin of the question is Congestion Control topic in section Frame Relay of Computer Network

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The correct option is (d) Packet is error-free

The best I can explain: Retransmission refers to the sender having to resend the packet to the receiver. It needs to be done only when some anomaly occurs with the packet like when the packet is lost or corrupted.

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