OSI Layer 4 and 5 Transport and Session Layers

This quick lesson gives an overview of the Open Systems Interconnect Layers 4 (Transport) and 5 (Session), and some of the key concepts you'll need for the exam. Since there is already so much material already available, we don't go too deep and focus on the key concepts. We hope our materials are helpful and that our CISSP practice questions will prove beneficial to all candidates.