Module 4: Examining the Network

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Module 4 Examining the Network
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Overview

• Scope of Networks
• Basic Connectivity Components
• Network Topologies
• Network Technologies
• Expanding the Network

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Scope of Networks
Local Area Network
Wide Area Network
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Basic Connectivity Components

• Network Adapters
• Network Cables
• Wireless Communication Devices

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Network Adapters

• Receive data and convert it into electrical
  signals
• Receive electrical signals and convert them into
  data
• Determine if the data received is for a
  particular computer
• Control the flow of data through the cable

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Network Cables
Types of Cables
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Wireless Communication Devices
Wireless Communication Devices
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Network Topologies

• Bus Topology
• Star Topology
• Ring Topology
• Mesh Topology
• Hybrid Topologies

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Bus Topology
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Star Topology
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Ring Topology
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Mesh Topology
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Hybrid Topologies
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Network Technologies

• Ethernet
• Token Ring
• Asynchronous Transfer Mode (ATM)
• Fiber Distributed Data Interface (FDDI)
• Frame Relay

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Ethernet
Collision Detection
Carrier Sense Multiple Access
Detects signal
Transmits signal
Collision detected
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Token Ring
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Asynchronous Transfer Mode
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Fiber Distributed Data Interface
Secondary Ring
Primary Ring
Characteristics
Description
Access Method
Token passing
Transfer Speed
Fiber-optic at 155 Mbps to 622 Mbps
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Frame Relay

Main Office
Frame Relay Network
Frame
Branch Offices
Frame
Frame
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Expanding the Network

• Repeaters and Hubs
• Bridges
• Switches
• Routers
• Gateways
• Remote Access Connectivity Types
• Public Switched Telephone Network (PSTN)
• Integrated Services Digital Network (ISDN)
• X.25
• Asymmetric Digital Subscriber Line (ADSL)

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Repeaters and Hubs
Repeater
Hub
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Bridges
Bridge
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Switches
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Routers
Router
Router
Router
Router
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Gateways
Gateway
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Remote Access Connectivity Types
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Public Switched Telephone Network (PSTN)
Analog Modem
Client
Server
Analog Modem
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Integrated Services Digital Network (ISDN)
ISDN Modem
ISDN Modem
Client
Server
ISDN
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X.25
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Asymmetric Digital Subscriber Line (ADSL)
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Lab A Examining the Network Architecture

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Review

• Scope of Networks
• Basic Connectivity Components
• Network Topologies
• Network Technologies
• Expanding the Network