Section 2: Fundamentals of Ethernet LANs

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Introduction

This chapter introduces Ethernet LANs, focusing on their physical and data-link layer standards. It covers key concepts like SOHO and enterprise LAN design, UTP and fiber cabling, and Ethernet frame forwarding. These fundamentals are critical for understanding modern network design and implementation.

This Chapter Covers the Following Exam Topics:

• 1.0 Network Fundamentals
  • 1.1 Explain the role and function of network components
    • 1.1.b Layer 2 and Layer 3 switches
  • 1.2 Describe characteristics of network topology architectures
    • 1.2.e Small office/home office (SOHO)
  • 1.3 Compare physical interface and cabling types
    • 1.3.a Single-mode fiber, multimode fiber, copper
    • 1.3.b Connections (Ethernet shared media and point-to-point)

Learning Objectives

1. Understand the components and structure of Ethernet LANs (SOHO and Enterprise).
2. Learn the differences between UTP and fiber cabling standards.
3. Explore Ethernet frame forwarding and MAC addressing.
4. Understand duplex settings and their impact on data transmission.

Key Topics

1. Overview of LANs and their types.
2. Physical layer standards for Ethernet (UTP and fiber cabling).
3. Ethernet frame forwarding process.
4. MAC addressing and error detection with FCS.
5. Full and half-duplex settings in Ethernet networks.

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