Purba, W. ., Rukmana, D. ., Br.sitanggang, D. R., & Harefa, L. S. . (2021). Impact of Online Learning in the Era Pandemic Using the Algorithm C 4.5 . Journal of Computer Networks, Architecture and High Performance Computing, 3(2), 144-152. https://doi.org/10.47709/cnahpc.v3i2.990