Internet of Things (IoT) is the recent and growing which is inevitable in day-to-day activities in current life. IoT is the network of systems which interconnect various real world objects and serve for the Machine-to-Machine (M2M) communication through the support of Internet. The significant functionality of IoT deals with an enormous amount of data sensed from various heterogeneous IoT devices. The data from various sensors of the objects are collected and converted to information relevant for the application using various machine learning algorithms. Additionally, the business and data analytics algorithms aid in the prediction of events on the basis of observed behavior and information. The routing of information in a secure way with limited resources over Internet in for IoT applications is a significant challenge. This paper is aimed to analyze and explore various research challenges and open issues related to security and use of IoT protocols. The main contribution of the survey is to highlight the research trends and simulation tools used for analysis of IoT layer protocols.

物联网（IoT）是近来不断增长的，这在当今生活的日常活动中是不可避免的。物联网是系统的网络，这些系统互连各种现实世界的对象，并通过Internet的支持为机器对机器（M2M）通信提供服务。物联网的重要功能处理了从各种异构物联网设备中感测到的大量数据。使用各种机器学习算法收集来自对象的各种传感器的数据，并将其转换为与应用相关的信息。此外，业务和数据分析算法可根据观察到的行为和信息来帮助预测事件。对于物联网应用而言，通过Internet上有限的资源以安全的方式路由信息是一项巨大的挑战。本文旨在分析和探索与物联网协议的安全性和使用相关的各种研究挑战和开放性问题。该调查的主要贡献在于突出用于分析物联网层协议的研究趋势和仿真工具。