978-0073402987 Chapter 7 Section 7.1 Connectivity: The Business Value Of A Networked World

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Business Driven Information Systems 5th Edition

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978-0073402987

978-0073402987 Chapter 7 Section 7.1 Connectivity: The Business Value Of A Networked World

April 4, 2019

NETWORKS: MOBILE

BUSINESS

Networks and telecommunications are the transmission of signals over a

distance for the purpose of communication. In modern times, this process

almost always involves the sending of electromagnetic waves by electronic

transmitters but in earlier years it may have involved the use of smoke

signals, drums or semaphore. Today, network and telecommunication is

widespread and devices that assist the process such as the television, radio

and telephone are common in many parts of the world. There is also a vast

array of networks that connect these devices, including computer networks,

public telephone networks, radio networks and television networks.

Computer communication across the Internet, such as email and instant

messaging, is just one of many examples of telecommunication.

SECTION 7.1: CONNECTIVITY: THE BUSINESS VALUE OF A

NETWORKED WORLD

Overview of a Connected World

benefit 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

CHAPTER

SECTION 7.1

NETWORKS: MOBILE BUSINESS

Wireless technologies are transforming how we live, work, and play.

Handheld devices are continuing to offer additional functionality and cellular

networks are advancing rapidly in their increased speed and throughput

abilities. These enabling technologies are fueling widespread adoption and

creation of new and innovative ways to perform business.

LEARNING OUTCOMES

1: Explain the %ve networking elements creating a connected world.

Network categories: Networks are categorized based on geographic span:

local area networks, wide area networks, and metropolitan area networks.

Network providers: At the top of the hierarchy are national service

providers (NSPs), private companies that own and maintain the worldwide

backbone that supports the Internet. Regional service providers (RSPs)

offer Internet service by connecting to NSPs, but they also can connect

directly to each other. Another level down are the Internet service

providers (ISPs); recall from Chapter 3 that an ISP provides access to the

Internet for a monthly fee.

Network access technologies: A modem is a device that enables a

computer to transmit and receive data. Broadband is a high-speed

Internet connection that is always connected. Digital subscriber line (DSL)

allows high-speed digital data transmission over standard telephone lines.

Internet cable connections provide Internet access using a cable television

company’s infrastructure and a special cable modem. A T1 line is a type

of data connection able to transmit a digital signal at 1.544 Mpbs.

Network protocols: A protocol is a standard that speci#es the format of

data as well as the rules to be followed during transmission. Network

access technologies use a standard Internet protocol called transmission

control protocol/Internet protocol (TCP/IP); it provides the technical

foundation for the public Internet as well as for large numbers of private

networks.

Network convergence: Network convergence is the efficient coexistence

of telephone, video, and data communication within a single network,

offering convenience and ;exibility not possible with separate

infrastructures. 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.

Learning Outcome 7.2: Identify the benefit and challenges of a

connected world.

Before networks, transferring data between computers was time-consuming

and labor-intensive. People had to physically copy data from machine to

machine using a disk. Networks offer many advantages for a business

including:

Sharing resources

Providing opportunities

Reducing travel

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 (1) security

and (2) social, ethical, and political issues.

CLASSROOM OPENER

HowStu5Works

Start the class by asking students who understands how the Internet works?

How does email go from the University of Denver to Boston University? Or

how does a web page go from client to server back to client?

Go to http://computer.howstu)works.com/internet-infrastructure.htm for an

overview of how the Internet infrastructure works. There are some great

diagrams and easy to understand explanations.

CLASSROOM EXERCISE

Cell Phones and Airplanes

Break your students into groups and ask them to research the Internet to #nd

the reasons why people are required to turn o) their cell phones when they

are on an airplane. There are two reasons why cell phones are not allowed on

an airplane:

1. The Federal Communication Commission (FCC) bans the use of cell

phones on airplanes because they could wreak havoc with cell phone

systems on the ground. Signals from your cell phone, when you use it on

or near the ground, reach just a few cell phone nodes near you and the

node that is getting the strongest signal picks up your call. If you move,

while driving your car or walking, the next node picks up the call. From

the air, however, your phone's signal could reach miles, hitting many

nodes at once, all with equal strength. Plus, you are moving at several

hundred miles an hour. Cell phone systems were not designed to handle

that.

2. The Federal Aviation Administration, for its part, supports the FCC ban for

its own reasons. They fear cell phones may interfere with navigation and

other aircraft systems.

Incident reports submitted by airline crews also demonstrate the potential for

trouble. NASA's Aviation Safety Reporting System's "Passenger Electronic

Devises Database Report Set" -- which could be subtitled "passengers

behaving badly" -- contains several reports of incidents involving passengers

whose "personal electronic devices" seemed to create disturbances in

aircrafts' electronic systems.

CLASSROOM EXERCISE

The History of Nokia

Ask your students if they know how Nokia started out in business? Chances

are none of them will guess a “wood pulp mill”. Here is the timeline:

1865 - Fredrik Idestam establishes a wood pulp mill on the banks of the

Tammerkoski Rapids. The event is generally considered the starting point

for Nokia's history. The small wood pulp mill quickly grew into a

well-established paper industry.

1871 - Idestam renames his company Nokia Ab. The product range was

initially extended from wood pulp to paper and sulphite cellulose, to be

followed by electricity generation in 1902.

1898 - Eduard Polón establishes the Finnish Rubber Works. During its

early years, the factory produced shoes, boots and overshoes, as well as

industrial hoses and belts.

1912 - Arvid Wickström establishes Suomen Punomotehdas Oy. The

company was the first Finnish company to manufacture electrical wires

and cables.

1933 - Nokia's first car tire, with a summer tread, is launched.

1987 - The first NMT (Nordic Mobile Telephony, Finnish

telecommunications authorities) portable phone, Mobira Cityman is

launched. Prior to this, mobile phones were in practice installed

permanently in cars. Nokia becomes the third-largest manufacturer or TV

sets in Europe. After the acquisition of Oceanic SA and Standard Elektrik

Lorenz (SEL), TVs were Nokia's main business for a while.

1992 - Nokia announces its first GSM (Global System for Mobile

Communications) mobile, model 1011. The phone's user interface and its

design form the basis of future models.

1993 - Nokia adopts the motto "Connecting People". The motto illustrates

Nokia's contribution to creating wireless connections between people.

1994 - Nokia announces the 2100 mobile phone series. In 1994, the goal

was to sell 500,000 units. Nokia sold 20 million.

1998 - Nokia becomes the world leader in mobile phones. One of the

cornerstones of Nokia's success in this field was the company's early

investments in digital GSM technology.

1999 - Nokia announces the 7110 model. The phone is the first Nokia

mobile to use WAP (Wireless Application Protocol). The WAP browser of

Nokia 7110 provides the user with immediate access to the content of

Internet pages using a mobile phone.

2000 - Nokia 9210 Communicator marks the start of the color screen era

for Nokia mobile phones. The versatile device is designed for the business

user, and it is compatible with most o:ce software suites.

2002 - Nokia announces its first phone with a built-in camera. Nokia 7650

is also the first Nokia phone to use the Series 60 software platform.

2002 - Nokia launches its first 3G phone, the Nokia 6650.

2003 - Mobile gaming goes multiplayer with the N-Gage from Nokia.

2005 - Nokia introduces the next generation of multimedia devices, the

Nokia Nseries.

2005 - Nokia sells its billionth phone – a Nokia 1100 – in Nigeria. Global

mobile phone subscriptions pass 2 billion.

2007 - Nokia recognized as 5th most valued brand in the world. Nokia

Siemens Networks commences operations. Nokia launches Ovi, its new

internet services brand.

2008 - Nokia's three mobile device business groups and the supporting

horizontal groups are replaced by an integrated business segment,

Devices & Services.

CORE MATERIAL

The core chapter material is covered in detail in the PowerPoint slides. Each

slide contains detailed teaching notes including exercises, class activities,

questions, and examples. Please review the PowerPoint slides for detailed

notes on how to teach and enhance the core chapter material.

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