Open Computer Based Test (OCBT) Using the Linear Congruent Method at SMA Angkasa Yogyakarta

This research aims to create open computer-based test (CBT) software so that schools in Indonesia can use it. The method used in this CBT is the randomization of Lienar Congruent Method questions. Testing was carried out at Angkasa yogyakarta High School (SMA) with the results of questions number one to forty of the ten students who used it being different. The application of LCM is to determine the initial parameters that are used as a benchmark for randomization so that it can produce a random number. The parameters used include multiplier factor, addition factor, modulus, and prefix or seed value. The result of this research is the randomization of questions using the Linear Congruent Method (LCM) in the Indonesian language subject, questions number 1 - 40 for each student were randomized and were successful with an accuracy score of 100%.