Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill...

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Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

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Transcript of Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill...

Page 1: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7Networks:

Mobile Business

McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Page 2: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

7-2

CHAPTER OVERVIEW

• SECTION 7.1 – Connectivity: The Business Value of a Networked World Overview of a Connected World Benefits of a Connected World Challenges of a Connected World

• SECTION 7.2 – Mobility: The Business Value of a Wireless World Wireless Network Categories Business Applications of Wireless Networks Benefits of Business Mobility Challenges of Business Mobility

Page 3: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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SECTION 7.1

CONNECTIVITY

Page 4: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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LEARNING OUTCOMES

1. Explain the five different networking elements creating a connected world

2. Identify the benefits of a connected world

3. Identify the challenges of a connected world

Page 5: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

7-5

OVERVIEW OF A CONNECTED WORLD

Networking Elements Creating a Connected World

Page 6: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Categories

• Local area network (LAN) – Connects a group of computers in close proximity, such as in an office building, school, or home

• Wide area network (WAN) – Spans a large geographic area such as a state, province, or country

• Metropolitan area network (MAN) – A large computer network usually spanning a city

Page 7: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Providers

• National service providers (NSPs) – Private companies that own and maintain the worldwide backbone that supports the Internet

• Network access points (NAPs) – Traffic exchange points in the routing hierarchy of the Internet that connects NSPs

• Regional service providers (RSPs) – Offer Internet service by connecting to NSPs, but they also can connect directly to each other

Page 8: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Access Technologies

• Bandwidth – The maximum amount of data that can pass from one point to another in a unit of time

Bit

Bit rate

Modem

Page 9: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Access Technologies

• Broadband – A high-speed Internet connection that is always connected

Digital subscriber line

Internet cable connection

T1 lines

Page 10: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Protocols

• Protocol – A standard that specifies the format of data as well as the rules to be followed during transmission

• Transmission control protocol/Internet protocol (TCP/IP) – Provides the technical foundation for the public Internet as well as for large numbers of private networks

• Domain name system – Converts IP addresses into domains

Page 11: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Protocols

Example of TCP/IP

Page 12: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Protocols

Internet Domains

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Chapter 7

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Network Convergence

• Network convergence - The efficient coexistence of telephone, video, and data communication within a single network, offering convenience and flexibility not possible with separate infrastructures

Page 14: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Convergence

• Unified communication (UC) – The integration of communication channels into a single service

• Peer-to-peer (P2P) – A computer network that relies on the computing power and bandwidth of the participants in the network rather than a centralized server

Page 15: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Network Convergence

• Voice over IP (VoIP) – Uses IP technology to transmit telephone calls

• Internet Protocol TV (IPTV) – Distributes digital video content using IP across the Internet and private IP networks

Page 16: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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BENEFITS OF A CONNECTED WORLD

• Networks offer many advantages for a business, including Sharing resources Providing opportunities Reducing travel

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Chapter 7

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Sharing Resources

• The primary resources for sharing include Intranet Extranet Virtual private network

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Chapter 7

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CHALLENGES OF A CONNECTED WORLD

• Networks have created a diverse, yet globally connected world by eliminating time and distance; networks make it possible to communicate in ways not previously imaginable

• Even though networks provide many business advantages, they also create increased challenges in

Security

Social, ethical, and political issues

Page 19: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Security

• SSL Certificate – An electronic document that confirms the identity of a website or server and verifies that a public key belongs to a trustworthy individual or company

• Secure hypertext transfer protocol (SHTTP or HTTPS) – A combination of HTTP and SSL to provide encryption and secure identification of an Internet server

Page 20: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Social, Ethical, and Political Issues

• Digital divide – A worldwide gap giving advantage to those with access to technology

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Chapter 7

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SECTION 7.2

MOBILITY

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Chapter 7

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LEARNING OUTCOMES

4. Explain the different wireless network categories

5. Explain the different wireless network business applications

6. Identify the benefits of business mobility

7. Identify the challenges of business mobility

Page 23: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

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WIRELESS NETWORK CATEGORIES

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Chapter 7

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Personal Area Network

• Personal area networks (PAN) – Provides communication over a short distance that is intended for use with devices that are owned and operated by a single user

• Bluetooth – Wireless PAN technology that transmits signals over short distances between cell phones, computers, and other devices

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Chapter 7

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Wireless LAN

• Wireless LAN (WLAN) - A local area network that uses radio signals to transmit and receive data over distances of a few hundred feet

• Wireless fidelity (Wi-Fi) - A means by which portable devices can connect wirelessly to a local area network, using access points that send and receive data via radio waves

Page 26: Chapter 7 Networks: Mobile Business McGraw-Hill/Irwin Copyright © 2013 by The McGraw-Hill Companies, Inc. All rights reserved.

Chapter 7

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Wireless MAN

• Wireless MAN (WMAN) - A metropolitan area network that uses radio signals to transmit and receive data

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Chapter 7

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Wireless MAN

• Worldwide Interoperability for Microwave Access (WiMAX) – A communications technology aimed at providing high-speed wireless data over metropolitan area networks

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Chapter 7

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Wireless WAN - Cellular

• Wireless WAN (WWAN) – A wide area network that uses radio signals to transmit and receive data

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Chapter 7

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Wireless WAN - Cellular

• Smartphone – Offer more advanced computing ability and connectivity than basic cell phones

• 3G – A service that brings wireless broadband to mobile phones

• Streaming – A method of sending audio and video files over the Internet

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Chapter 7

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Wireless WAN - Satellite

• Satellite – A space station that orbits the Earth receiving and transmitting signals from Earth-based stations over a wide area

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Chapter 7

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BUSINESS APPLICATIONS OF WIRELESS NETWORKS

• Areas experiencing tremendous growth using wireless technologies include

Radio-frequency identification (RFID)

Global positioning system

Geographic information system

Location-based services

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Chapter 7

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Radio-Frequency Identification (RFID)

• Radio-frequency identification (RFID) – Uses electronic tags and labels to identify objects wirelessly over short distances

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Chapter 7

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Global Positioning System

• Global positioning system (GPS) – A satellite-based navigation system providing extremely accurate position, time, and speed information

• Some cell phone providers equip their phones with GPS chips that enable users to be located to within a geographical location about the size of a tennis court

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Chapter 7

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Geographic Information Systems (GIS)

• Geographic information system (GIS) – Consists of hardware, software, and data that provide location information for display on a multidimensional map

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Chapter 7

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Location-Based Services

• Location-based services (LBS) – Applications that use location information to provide a service

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Chapter 7

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BENEFITS OF BUSINESS MOBILITY

• Enhance mobility• Provides immediate data access• Increases location and monitoring

capability• Improves work flow• Provides mobile business opportunities• Provides alternative to wiring

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Chapter 7

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CHALLENGES OF BUSINESS MOBILITY

• Protecting against theft• Protecting wireless connections• Preventing viruses on a mobile device• Addressing privacy concerns with RFID and

LBS


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