Course Curriculum INTRODUCTION TO CCNA DATA Network Reference Models 30 min Introduction to OSI Model OSI Reference Model 30 min The Upper Layers 30 min The Application Layer 30 min The Presentation Layer 30 min The Session Layer 30 min The Lower Layers 30 min The Transport Layer 30 min The Network Layer 30 min The Data-Link Layer 30 min The Physical Layer 30 min ENCAPSULATION AND LAYERED COMMUNICATION 30 min INTRODUCTION TO CCNA DATA 20 questions20 min Instructors Life Learners Reviews 0 0 rating 5 stars 0 4 stars 0 3 stars 0 2 stars 0 1 star 0 Free Enroll