Correct answer is (b) Reduced network capacity
Best explanation: Cross-layer design involves the exchange of information over various interfaces to achieve a better quality of service than possible by following the traditional layered approach. The exchange of information can be between physical and data link layer, data link and transport layer, network and transport layer, etc. Cross-layer design aims to achieve a high end to end throughput, increase the network capacity, optimize network utilization, reduce interference and power consumption.