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Introduction to Networks v5.1

Chapter 4:

Network Access

Instructor Name: Touch Ra

27,March 2016

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4.0 Introduction

4.1 Physical Layer Protocols

4.2 Network Media

4.3 Data Link Layer Protocols

4.4 Media Access Control

4.5 Summary

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Home Router

Connecting to the

Wired LAN

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Connecting to the Wireless

LAN with Range Extender

Wired Connection Using an

Ethernet NIC

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Manchester Encoding

Modulation

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RJ-45 UTP Plugs

RJ-45 UTP Socket

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UTP Testing Parameters:

Wire map

Cable length

Signal loss due to attenuation

Crosstalk

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Single Mode

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Multimode

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Fiber Optic Connectors

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Common Fiber Patch Cords

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Layer 2 Data Link Address

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Physical Topology

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Logical Topology

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Half-Duplex Communication

Full-Duplex Communication

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Contention-Based Access

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Controlled Access

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Frames have three basic parts:

Header

Data Trailer

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Examples of Layer 2 protocols:

802.11 Wireless Frame

PPP Frame

HDLC

Frame Relay

Ethernet Frame

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Thank you.