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The modern smart cities completely rely on the technology where the smart and intelligent-based transportation management system is a primary requirement and that can only be achieved by the advancement in traditional vehicular ad-hoc network (VANET). The primary two techniques such as IoT and security mechanism are incorporated with the VANET system which helps to design the robust framework. Due to quick transformation in technological landscape, the threats and attacks also get advanced. The most prominent characteristics of the VANET is to provide the self-aware system which assists for the better management in the transportation system. As per the advancement in the attacks, the robust defense mechanism should also be increased. If not, there would be the huge loss in terms of the lives of living beings, societal, and economic. Therefore, this study is completely based on the analysis and recommendation for developing the robust IOV system, which ensures the secure infrastructure.

In order to incorporate patient data, the internet of healthcare things (IoHT) enables services using wearable healthcare devices. Blockchain 1.0 is based on bitcoin whereas the primary concept has relied on the cryptocurrency applications. Blockchain 2.0, which introduced the idea of the smart contract, was based on the defined single piece of code that is executed and saved in a decentralized ledger. Blockchain 3.0 significantly deals with the non-financial applications such as government, energy, health, etc. This generation of blockchain technology is spreading in the healthcare sector.

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