1. This research uses a Likert scale to explain TCP performance. The Likert scale is a source of bias because it is based on the subjective views of the respondents. Other methodologies used to achieve triangulation are qualitative studies. A qualitative study can ensure the validity of the research since the use of a Likert scale to explain TCP performance is biased and ensure the reliability of the research results as the questionnaires are sent via e-mail/mail.