Wan Salleh, W.M.Z.B. et al. 2024. Skill development and career advancement: survey of the effectiveness of the fiber optic cable professional certification course - CA1C internal network and CA2C external network. Southeast Asian Journal of Technology and Science. 5, 2 (Oct. 2024), 53–58. DOI:https://doi.org/10.29210/810480800.