The „Deutschtest für Zuwanderer (DTZ)“ is the language exam at the end of the integration course. You can achieve level A2 or B1 (Common European framework of reference for languages).
B1 means you can talk about every day topics and read and write corresponding texts. B1 doesn’t mean you speak perfect German.
The test has a written and an oral exam, taking place on two consecutive days (Fri/Sat) every month. The written part consists of reading comprehension, listening comprehension and text production, the oral exam is about introducing yourself, talking about a picture, making plans together.
For more information and exercises please see the telc website.
You can also take part in the DTZ at pdL if you learned German at other institutes and pay for the test yourself, the test-fee is € 100 then. Please mind that you have to apply for the test at pdL at least 30 days in advance.