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In the present scenario, most of the computing operations are performed over the Internet. Many companies provide their services using Internet, so networking services becomes more important these days. Hence, there is high demand for secured management of information, along with faster processing of operations. Due to increased demand for network services, there is a need to increase the performance of these services. The gradual increase in the amount of important information increases the packet payloads. EHMA is a faster searching algorithm that reduces the searching time significantly.In the original paper [1], EHMA is implemented in two tiers, but this paper considers the implementation of EHMA in three tiers.It follows incremental clustering algorithm for grouping clusters according to their impact factors. This three tier implementation of EHMA improves the security of the information as it uses SHA-256 for security.

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The COVID-19 pandemic has resulted in a dramatic change in our day to day life. It affected not only the normal working of many organizations but also the traditional classroom teaching and learning methodologies. Since everyone has to maintain social distancing to follow COVID-19 guidelines, work from home is being preferred as the best alternative as a preventive measure from spreading the pandemic. In its severe impact, schools, colleges, and universities were shut down, pushing nearly 1.2 billion students out of the classroom. As a result, the education system has to suddenly adapt to a distinctive online-based e-learning approach over digital platforms. Research tells that online learning motivated more towards the retention of online resources with less cost in terms of money and time. But, it has also brought many challenges along the way. In this research work, we focus on some of the major challenges such as information security and network bandwidth problem during online teaching. The related security measures being adopted in our research work to secure personal information during any online teaching and learning process. We also focus on some basic learning models for provisioning effective online-based teaching and learning.

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