Book Title
Business Driven Information Systems 5th Edition

978-0073402987 Chapter 7 Chapter 7 Closing Material Part 2

April 4, 2019
Instructor Note: There are few right or wrong answers in the business world.
There are really only efficient and inefficient, and effective and ineffective
business decisions. If there were always right answers businesses would never
fail. These questions were created to challenge your students to apply the
Will we be able to access applications and data anywhere, at anytime, updating
data in real-time, securely, efficiently, effectively, affordably? Will we see the end
of messy wires protruding from computers, printers, modems, scanners, projectors
and other peripherals? Will we be able to walk up to a wireless printer at an
Airport, turn on our Pocket PC, tablet or laptop and print that proposal or
presentation we need, perfectly formatted, regardless of the operating system or
application we are running and printer drivers we may have in our device? Will we
be able to create a mobile version of our existing SAP, Siebel, Oracle or SQL-based
application, without fuss, without it costing a fortune, and run it over a 1XRTT or
GPRS network, securely, dependably? Will we be able to make and receive phone
calls, or manage our email and calendar from a hand-held device, using voice over
Wireless LAN or uni#ed messaging technology while connected to a wi-# network
at an Airport, convention center, or coffee shop? All interesting questions to think
about as the wireless frontier starts to mature.
1. A few new wireless devices might include:
Wireless technology as well as smaller and cheaper sensors to track
people’s vital signs on a daily, even hourly, basis. The data can then be
The Bluetooth wireless technology that allows people to use a hands-free
automation systems, controlling lights, appliances, thermostats, lawn
sprinklers and other devices.
Wireless devices that allow mobile search services and apps that you speak
2. Companies are discovering the value in having information workers do their
jobs outside of the office. Work is no longer tied to a set, physical location.
Communicating with others and accessing and working with information while
priority for CIOs.”
Most mobile adoption has been driven by individual departments and
point-specific solutions that assist, for example, sales and field service
part of their technology infrastructure and processes.
This increasing demand has led to rapid growth in mobile software, ranging
from more secure mobile email, mobile instant messaging (IM), and mobilized
corporate applications like customer relationship management (CRM)
programs. When it comes to hardware, mobility has seen great adoption via
mobile personal computers, as 75 percent of organizations now support
Microsoft mobile solutions can help employees be as productive outside of the
office as they are when they are at their desks.
Mobility adoption can start with people accessing email on handheld devices,
such as personal digital assistants (PDAs), or editing documents on a mobile PC
while on the go, but companies are realizing it does not stop there. Mobile
Today, doctors send prescriptions electronically to pharmacies from their
mobile PCs or handheld devices, insurance companies manage claims through
electronic forms instead of paper-based processes, and services are conducted
workforce the ability to:
Save time and increase productivity by quickly and easily accessing
Automatically synchronize #les when their mobile PCs, Windows Mobile
powered Smartphones, and PDAs connect to the corporate network.
Improve sales cycles and forge closer relationships with customers and
Business Driven Information Systems - Instructor’s Manual Chapter7 Page 2 of 8
Wireless Internet access is quickly gaining popularity among people seeking
high-speed Internet connections when they are away from their home or office.
The signal from a typical wireless access point (WAP) only extends for about 300
feet in any direction, so the user must #nd a “hot spot” to be able to access the
Internet while on the road. Sometimes hot spots are available for free or for a
small fee.
Student answers to this question will vary. There are numerous ways to keep
connected while traveling. Here are a few potential answers:
1. Students can use www.wi#nder.com and www.jiwire.com to determine which
2. Students can research the websites of two or three commercial networks that
3. Students can research www.wi#freespot.com to deter mine how many free
public hot spots are available in these cities. Are there enough for your
4. Students can research www.fon.com to see alternative methods of using home
5. Students can also look at purchasing wireless access cards for PCs.
These days wireless networking products are so ubiquitous and inexpensive that
anyone can easily build a wireless network with less than $100 worth of
equipment. However, wireless networks are exactly that–wireless - they do not
stop at walls. In fact, wireless networks often carry signals more than 300 feet
from the wireless router. Living in an apartment, dorm, condominium, or house
means that you might have dozens of neighbors who can access your wireless
reasons for not sharing a home wireless network including:
Slow down Internet performance
Allow others to view #les on your computers and spread dangerous software
Allow others to send spam or perform illegal activities with your Internet
Business Driven Information Systems - Instructor’s Manual Chapter7 Page 3 of 8
In general, students need to de#ne the types of applications that users will need.
For example, enable the use of email and web browsing as a basic service. As
options, you could include the use of VPNs and video conferencing.
The following are suggestions for de#ning requirements that pertain specifically to
the number of subscribers. Most WLAN users today have 802.11b radio NICs,
but plan ahead and insist on access points that support both 802.11b/g and
Provide adequate authentication mechanisms - To regulate access to the
of security consistent with application requirements.
Consider implementing local advertisements - A public WLAN can provide a
mechanism to deliver advertisements to subscribers similar to other online
though, especially when users are paying for services.
A good design involves the application of technologies and products to bring
When con#guring a public WLAN, here are some specific tips:
Turn WEP off - Despite all of the controversy, WEP (wired equivalent privacy)
EAP-TLS) to satisfy the open systems requirement of public WLANs.
Broadcast SSIDs - The SSID (service set identi#er) is an obstacle to public
NIC without end user intervention. As a result, be sure to enable SSID
broadcasting when con#guring the access point. To avoid hanging signs up in
your facility indicating the SSID and instructing users on how to con#gure their
Business Driven Information Systems - Instructor’s Manual Chapter7 Page 4 of 8
Include DHCP services - As users roam to different hotspots, their user device will
need an IP (Internet protocol) address that corresponds to the local network. To
enable roaming with as few end user actions as necessary, establish dynamic host
Understanding the uses ofGPS and GIS can be used in all sorts of devices, in many
different industries, for multiple purposes. You want to compete, and win first
prize, in the PennVention next year. Create a product, using a GPS or GIS, that is
not currently in the market today that you will present at the fourth annual
Student answers to this question will vary. GPS and GIS can be used in a variety
they ran (or skiers, mountain climbers, boats, jet skis, bikers, hikers, etc. )
Onstar products for automobiles
work, and anything of value
Use GIS and GPS to locate teachers and children in public schools, doctors and
nurses in hospitals, employees in office campus, or students on a college
Here is another exercise that students should #nd interesting. The most obvious
choice would be to use VoIP. Since VoIP runs over the Internet, the infrastructure is
already available. This issue that students should be concerned with is reliability.
which may be subject to outages in the absence of a uninterruptible power supply
or generator.VoIP phones infrastructure are built upon routers. If there is a down
router in your transmission link, your call will be automatically redirected on a
different path to reach your call destination. If the first router is down in your
Business Driven Information Systems - Instructor’s Manual Chapter7 Page 5 of 8
a #xed bandwidth. The routers on the networks push the data packets across as
fast as possible. When the volume of traffic is high it will slow the network down,
therefore diminishing the quality and reliability. The voice transmission will sound
Something else students might mention is quality of service. Some broadband
connections may have less than desirable quality. Where IP packets are lost or
delayed at any point in the network between VoIP users, there will be a
momentary drop-out of voice. This is more noticeable in highly congested
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
distance that is intended for use with devices that areowned and operated by a
single user. A WLAN is a local area network that uses radio signalsto transmit and
receive data over distances of a few hundred feet. A WMAN is a metropolitanarea
Mobile and wireless business applications and services are using satellite
technologies.These technologies are GPS, GIS, and LBS. GPS is a satellite-based
navigation system providingextremely accurate position, time, and speed
There are several challenges of wireless networks including protecting against
theft, protectingwireless connections, preventing viruses on mobile devices, and
device falls into the wrong hands, especially if the theft is not discovered
orreported immediately and the company does not have time to revoke
access.Network intrusions can occur if access codes or passwords are stored on a
device thatis lost or stolen. However, any time a wireless network connects to a
Business Driven Information Systems - Instructor’s Manual Chapter7 Page 6 of 8
The potential for contracting viruses on mobile devices is becoming a reality. The
needfor virus protection at the device level is critical. Any device that can access
the Internet orreceive email is at risk of catching a virus and passing it on to other
Taking the time to review and research the many different plans, as well as
understanding the #ne print associated with each plan, can save an individual and
a business big money. There are a number of websites your students can visit
Cell Phone Plans : Full ReportWe've split our coverage of cell phone plans into two
reports. This report compares traditional cell phone plans, which usually require a
A wireless network can enhance mobility, provide immediate data access,
increase locationand monitoring capabilities, provide mobile commerce
opportunities, improve work Oow, andprovide an alternative to wiring. But it can
also help some individuals make bad decisions quicker. In the past a person
Researchers at Harvard University and BBN Technologies have designed
CitySense, a wireless network capable of reporting real-time sensor data across
the entire city of Cambridge, Mass. CitySense is unique because it solves a
an embedded PC running the Linux OS, an 802.11 Wi-Fi interface and weather
One of the challenges in the design was how the network would allow remote
nodes to communicate with the central server at Harvard and BBN. CitySense will
do that by letting each node form a mesh with its neighbors, exchanging data
through multiple-hop links. This strategy allows a node to download software or
Business Driven Information Systems - Instructor’s Manual Chapter7 Page 7 of 8
goals would you have for the system besides monitoring urban weather and
your network and your city from these issues? A CitySense network could offer
any number of additional benefit including:
Digital video surveillance for preventing crime
Wireless network access for individuals that the city could charge to generate
Upload all kinds of statistics beyond weather and pollution including humidity,
pollen, toxins, gas, smoke, etc.
Business Driven Information Systems - Instructor’s Manual Chapter7 Page 8 of 8