Which among the following layers have a similar impact due to interference caused by primary user transmission?(a) Physical layer and MAC layer(b) MAC layer and network layer(c) Network layer and Transport layer(d) Transport layer and Physical layerI had been asked this question in quiz.I want to ask this question from Next Generation Wireless Network topic in chapter Next Generation Wireless Network of Cognitive Radio

Which among the following layers have a similar impact due to interfer

1.	Which among the following layers have a similar impact due to interference caused by primary user transmission?(a) Physical layer and MAC layer(b) MAC layer and network layer(c) Network layer and Transport layer(d) Transport layer and Physical layerI had been asked this question in quiz.I want to ask this question from Next Generation Wireless Network topic in chapter Next Generation Wireless Network of Cognitive Radio
Answer» The correct ANSWER is (C) Network layer and Transport layer The best EXPLANATION: The effect of primary USER transmission on the MAC layer and network layer is complete and irreversible blockage of a packet. It can be mitigated by retransmitting acknowledgments in the MAC layer. It can be mitigated in the network layer by selecting PROTOCOL with effective packet restoration mechanisms.

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