chapter 1. ch 1 goals in this chapter, you will learn to: describe how networks impact our daily...
TRANSCRIPT
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Chapter 1
Chapter 1
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Ch 1 Goals
In this chapter, you will learn to:•Describe how networks impact our daily lives.•Describe the role of data networking in the human network.•Identify the key components of any data network.•Identify the opportunities and challenges posed by converged networks.•Describe the characteristics of network architectures: fault tolerance, scalability, quality of service and security.•Install and use IRC clients and a Wiki server.
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1.1.1 Networks Support the Way We Live
Imagine a world without networks
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1.1.1 Networks Support the Way We Live
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1.1.1 Networks Support the Way We Live
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1.1.2 Examples – Today’s Communication Tools
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1.1.2 Examples – Today’s Communication Tools
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1.1.3 Networks in Learning
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1.1.3 Networks in Learning
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1.1.4 Networks at work
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1.1.5 Networks and Work
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1.2.1 What is Communiction?
Among the protocols that govern successful human communication are:•An identified sender and receiver•Agreed upon method of communicating (face-to-face, telephone, letter, photograph)•Common language and grammar•Speed and timing of delivery•Confirmation or acknowledgement requirements
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1.2.2 Quality of Communications
External factors affecting the success of communication include:•The quality of the pathway between the sender and the recipient•The number of times the message has to change form •The number of times the message has to be redirected or readdressed•The number of other messages being transmitted simultaneously on the communication network•The amount of time allotted for successful communication
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1.2.2 Quality of Communications
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1.3.1 Communicating over networks
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1.3.2 Elements of a Network
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1.3.2 Elements of a Network
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1.3.2 Elements of a Network
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1.3.2 Elements of a Network
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1.3.2 Elements of a Network
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1.3.3 Converged Networks
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1.3.3 Converged Networks
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1.4.1 Network Architecture
Fault Tolerance
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1.4.1 Network Architecture
Scalability
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1.4.1 Network Architecture
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1.4.1 Network Architecture
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1.4.2 Fault Tolerant Network Architecture
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1.4.2 Fault Tolerant Network Architecture
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1.4.3 Scalable Network Architecture
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1.4.3 Scalable Network Architecture
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1.4.3 Scalable Network Architecture
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1.4.3 Scalable Network Architecture
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1.4.3 Scalable Network Architecture
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1.4.4 Providing Quality of Service
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1.4.4 Providing Quality of Service
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1.4.4 Providing Quality of Service
QoS mechanisms enable the establishment of queue management strategies that enforce priorities for different classifications of application data. Without properly designed and implemented QoS mechanisms, data packets will be dropped without consideration of the application characteristics or priority.
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1.4.5 Providing Network Security
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1.4.5 Providing Network Security
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1.5.1 Where is it all going?
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1.5.2 Network Careers
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1.6.1 Using Collaboration Tools
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1.6.2 Using Collaboration Tools
In this lab, you will define the terms wiki and blog. You will also explain the purpose of a wiki and blog and how these technologies are used for collaboration.
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1.7.1 Summary
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Base 10 Numbering System
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Base 2 Numbering System
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ASCII Code
128 64 32 16 8 4 2 1
0 1 0 0 0 0 0 1
The Letter A
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Binary to Decimal Conversion
128 64 32 16 8 4 2 1
1 1 0 0 0 0 0 0
1 0 0 1 1 0 0 1
1 1 1 1 1 1 1 1
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Decimal to Binary Conversion
128 64 32 16 8 4 2 1
Number Divide Result Remainder
192 / 2 = 96 0
96 / 2 = 48 0
48 / 2 = 24 0
24 / 2 = 12 0
12 / 2 = 6 0
6 / 2 = 3 0
3 / 2 = 1 1
1 / 2 = 0 1
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Decimal - Binary - Hexadecimal Table
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Dotted Decimal Notation
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IP Address Classes
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Address Classes
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IP First Octet Address Ranges