A2 qualification shows that you can communicate in basic Arabic in everyday situations and will help you prepare for higher level Abjad qualifications.
B1 shows that you can communicate in Arabic in practical, everyday situations. It will give you a good foundation if you want to study for higher level Abjad qualifications.
B2 qualification proves that you can speak and write Arabic well enough to study or work in an Arabic-speaking environment.
C1 qualification shows that your Arabic is of a standard expected of a professional business person or an undergraduate university student.
C2 qualification shows that you have mastered Arabic to an exceptional level and can use it fluently in demanding research, academic and professional situations. This is the highest Abjad qualification.