The course Data Converters 2: Desing is required for the spcialization track data converters of the IC gourp. The schema of IC group specialization and the position of the the course can be seen in the following scheme:
High-speed Digital-to-Analog Converters
DAC part exam questions: http://adda.wirelessresearch.nl/tiki-download_file.php?fileId=1
How to properly calculate the spectrum (FFT) can be found here: FFT tutorial