Levels/L3 · Protocols/Lesson 05Quiz · 05Level 3 QuizTest what you learned in this level: 8 questions, no timer. Wrong answers are corrected instantly.Duration4minLevelL3TypeQuizProgress5/ 5Question 01 / 08What is DNS used for?AFile transferBConverting domain name to IPCSending emailDWatching videoNext question→PreviousTCP vs UDPNextHub vs Switch