I. Introduction
The COVID-19 pandemic has impacted many aspects of daily life including education. The world has shifted all activities from a face-to-face setting to a digital environment. Around the globe, educational institutes are facing irregular closures due to this pandemic. As a result, around 1.5 billion students and 63 million educators are left with no option other than to opt for online education [1] [2]. The digital transformation of educational activities at all levels has made it possible to incorporate new teaching-learning standards such as e-learning, ubiquitous learning and blended learning.