As a prospective master's student, find the application deadline for the winter semester for the English-taught Computer Science M.Sc. program at the University of Stuttgart. Also, determine the required English language proficiency level for admission to this program. Do not access external PDF documents.
Navigate to the University of Stuttgart's Master's programs overview page (if not already there). Locate and navigate to the dedicated page for the 'Computer Science (in English)' Master of Science program. On the program page, find the application deadline for the winter semester, potentially by exploring news or application information links. Return to the main program page (if navigated away) and locate the general English language proficiency level required for admission, likely under an 'Admission Requirements' or 'Language Requirements' section. State both the application deadline and the required English language proficiency level.
Successfully navigate to the dedicated page for the 'Computer Science (in English)' Master of Science program. State the application deadline for the winter semester for the Computer Science M.Sc. program as 'January 15'. State the general English language proficiency level required for admission as 'CEFR level C1'. Do not attempt to open or extract information from any PDF documents.