Understanding the OSI Model is fundamental to passing the Network+ exam. The seven layers—Physical, Data Link, Network, Transport, Session, Presentation, and Application—form the backbone of how networks communicate. This quiz helps you master each layer.

The exam expects you to know not just the layer names and order, but to understand what protocols, devices, and functions operate at each layer. Our focused quizzes test your knowledge and application.

Regular practice will help you quickly identify which layer handles specific tasks, from cabling and switches to encryption and HTTP requests.

The OSI Model quiz covers all seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.