Multiple choice Which three layers of the OSI Model make up the upper layers? Application, Presentation, Session Presentation, Session, Transport, Session, Transport, Network Transport, Network, Data Link Reveal answer Fill a bubble to check yourself A Correct answer Explanation The OSI model is divided into upper layers (Application, Presentation, Session) which deal with user-facing data, and lower layers (Transport, Network, Data Link, Physical) which deal with data transmission.