Second, mathematics. Generally, they take the No.2 exam, and some take the No.1 exam. Programming will also be useful if you learn math well. In short, postgraduates majoring in GIS have to take a math test. So get ready. As for the number of exams, it depends on the school you apply for.
Third, employment prospects. The employment prospect of GIS major is still very good. To enter a company or scientific research unit, you must be able to program, and some may be more demanding. You can also take an examination of civil servants, which may have lower requirements for programming.
The above is only my personal opinion, for reference only, I hope I can help you.