CompTIA Network+ Study Guide, 5th Edition

Chapter 2The Open Systems Interconnection Specifications

THE FOLLOWING COMPTIA NETWORK+ EXAM OBJECTIVES ARE COVERED IN THIS CHAPTER:

• 1.1 Compare and contrast the Open Systems Interconnection (OSI) model layers and encapsulation concepts
  • OSI Model
    • Layer 1 – Physical
    • Layer 2 – Data link
    • Layer 3 – Network
    • Layer 4 – Transport
    • Layer 5 – Session
    • Layer 6 – Presentation
    • Layer 7 – Application
  • Data encapsulation and decapsulation within the OSI model context
• 1.5 Explain common ports and protocols, their application, and encrypted alternatives
  • Connectionless vs. Connection-oriented

In this chapter, we're going to analyze the Open Systems Interconnection (OSI) model. I'll thoroughly describe each part to you in detail because it's ...