The German language exam is a standardized test of German language proficiency, used for a variety of purposes such as university admissions, immigration, and professional licensing. There are several types of German language exams, including:

1. TestDaF: The TestDaF (Test Deutsch als Fremdsprache) is a language proficiency exam for individuals who are interested in studying at a German university. It tests reading, listening, writing, and speaking skills and is recognized by all German universities.
2. Goethe-Zertifikat: The Goethe-Zertifikat is a German language exam that tests general language proficiency. It is recognized by many German employers and universities and is available at various levels, from A1 to C2.
3. Telc: The Telc (The European Language Certificates) is a series of German language exams that are recognized by many employers and universities in Germany. They are available at various levels and test different language skills, such as reading, listening, writing, and speaking.
4. ÖSD: The ÖSD (Österreichisches Sprachdiplom Deutsch) is a German language exam that is recognized in Austria and by some employers and universities in Germany. It tests general language proficiency and is available at various levels.

German language exams typically test grammar, vocabulary, and language usage in a variety of contexts. They may include multiple choice questions, writing tasks, speaking tasks, and listening comprehension tasks. Preparation for the exam may involve taking a preparatory course, practicing with sample exams, and focusing on areas of weakness in the language. The goal of the exam is to assess the individual’s level of German language proficiency and to provide a recognized certification of their skills.