Answer:
The internet was initially used to transfer data packets between users and data sources with a specific IP adress.Due to advancements,the internet is being used to share data among different small,resource constrained devices connected in billions to constitute the Internet of Thing (IoT).A large amount of data from these devices imposes overhead on the (IoT) network.Hence,it is required to provide solutions for various network related problems in (IoT) including routing,energy conservation,congestion,heterogeneity,scalability,reliability quality of service (QoS) and security to optimally make use of the available network.In this paper,a comprehensive survey on the network optimization in IoT is presented.