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In which phase packets are forwarded hop by hop to get closer to the sink?

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In which phase packets are forwarded hop by hop to get closer to the sink?

(a) Initialization

(b) Message Relaying

(c) Selective recovery

(d) Lost message detection

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Correct choice is (b) Message Relaying

Explanation: Packets are forwarded hop by hop to get closer to the sink. Intermediate nodes keep the packetId in their buffer during Tcol corresponding to the maximum delay allowed to transmit.

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