The first half is taught in period 1, see https://mycourses.aalto.fi/course/view.php?id=28393.
Notice that passing the period 1 course is a mandatory requirement for being able to take the period 2 course. If your passing of period 1 is pending subject to the retake exam on December 15 then you can participate in the period 2 course.
Make sure to read the syllabus carefully before registering for this course (link in the side panel at MyCourses). Note that the ongoing Corona virus pandemic may still cause changes to course policies. In Fall 2020, the exam and homework will both have weight 50% in the grade.
In case you are viewing these pages after the covid-19 pandemic is over, be aware that there are some exceptional policies and procedures that are not likely to be valid in the future.