Principles of Information Systems 12th Edition Stair Solutions Manual
Principles of Information Systems 12th Edition Stair Solutions Manual
Principles of Information Systems 12th Edition Stair Solutions Manual
Principles of Information Systems 12th Edition Stair Solutions Manual
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5. Principles of Information Systems, 12th
Edition
Solutions – Chapter 7
Ethical & Societal Issues
Bringing High-Speed Internet to Poland
Discussion Questions
1. Student responses will vary. Some students may point out that without the Internet, it
would be difficult for any country to participate in the world economy.
2. Student responses will vary. If the goal is for all countries in the EU to be on par in
terms of technological capability and strong economies, then yes, it is an appropriate
split.
Critical Thinking Question
1. Student responses will vary. Some may point out the difficulty they would have in
completing assignments and registering for classes.
2. Student responses will vary. With the availability of high-speed Internet service,
Faceboook will likely see a surge in membership.
Information Systems @ Work
Improved Insight via Clickstream Analysis
Discussion Questions
1. Student responses will vary. Google and other search engines would have the
information they need to modify their algorithms in order to improve search results.
2. Learning from clickstreams could be useful in online education. It would discern
patterns that would allow students to learn more quickly and more easily. The
improved experience may affect students’ overall attitude toward learning.
Critical Thinking Questions
1. Student responses will vary. Every time you navigate the Internet, you leave behind a
trail of information that when analyzed, can reveal personal data or your identity.
This is a serious privacy issue and online users should be able to opt out of tracking.
6. Principles of Information Systems, 12th
Edition
2. Student responses will vary. As an online user, clickstream analysis helps you to find
relevant information more quickly.
Review Questions
1. While the terms Internet and Web are often used interchangeably, technically, the two
are different technologies. The Internet is the infrastructure on which the Web exists.
The Internet is made up of computers, network hardware such as routers and fiber
optic cables, software, and the TCP/IP protocols. The Web, on the other hand,
consists of server and client software, the Hypertext Transfer Protocol (HTTP),
standards, and markup languages that combine to deliver information and services
over the Internet.
2. ARPANET was broken into two networks: MILNET, which included all military
sites, and a new, smaller ARPANET, which included all the nonmilitary sites.
3. Hypertext Markup Language (HTML) is the standard page description language for
Web pages. HTML is defined by the World Wide Web Consortium (referred to as
“W3C”) and has developed through numerous revisions. HTML tells the browser
how to display font characteristics, paragraph formatting, page layout, image
placement, hyperlinks, and the content of a Web page.
4. Host names on the Internet consist of a string of characters (word-like elements)
separated by periods. These names can be interpreted by reading from right to left
(most general to most specific). The rightmost part of the name is the zone (or
domain). It generally represents a geographic or administrative host type. Currently,
twelve types of zones are in use. These are:
Zone Name Zone Description
edu educational sites
mil military sites
gov government sites
net networking organizations
org organizations
firm businesses and firms
store businesses offering goods for purchase
info information service providers
web entities related to world wide web
activities
arts cultural and entertainment activities
rec recreational activities
nom Individuals
7. Principles of Information Systems, 12th
Edition
The next part of the address is the subzone (subdomain), which represents the host
organization’s identifier. Several subzones might be used to represent divisions
within the host organization. The leftmost portion of the address is the specific
computer’s name, e.g., computer.subzone.zone.
5. A Web browser is Web client software, such as Chrome, Firefox, Internet Explorer,
Safari, and Opera, are used to view Web pages. Google Chrome, Mozilla Firefox,
Internet Explorer, Apple Safari, and Opera Software’s Opera are popular Web
browsers.
6. Cloud computing refers to a computing environment in which software and storage
are provided as an Internet service and accessed with a Web browser. Apple
Computer has developed a service called iCloud to allow people to store their
documents, music, photos, apps, and other content on its server. Facebook provides
social interaction and can store personal photos, as can Flickr and a dozen other photo
sites.
7. The following table summarizes different ways to connect to the Internet:
Access Method Advantages Disadvantages
LAN Server Expense can be shared by
numerous LAN users/very
fast/ hardware may already
be in place on local stations
Requires network
card/cost can be as
much as $2000 per
month
Dial-in via SLIP or PPP Low cost/low hardware
requirements
Slower speeds/at
mercy of phone line
quality
Online service with
Internet access
Low cost/additional services
provided/low hardware
requirements
Access can be
competitive/slow
8. Internet censorship is the control or suppression of the publishing or accessing of
information on the Internet.
9. A Web design framework is a collection of files and folders of standardized code
(HTML, CSS, and JavaScript documents) that can be used to support the
development of Web sites. Responsive Web design is made easier through the use of
frameworks that enable you to create standard-compliant Web sites with minimum
effort while at the same time keeping everything simple and consistent. The
advantage of using frameworks is that they speed up and simplify the design of the
Web site and provide consistency across different devices.
8. Principles of Information Systems, 12th
Edition
10. When you visit a site, your clickstream is the sequence of pages you click as you
spend time on the site. Clickstream analysis is the process of analyzing many
clickstreams to understand visitors’ collective behavior. The goal of clickstream
analysis usually is to optimize a site for its users.
11. A podcast is an audio broadcast over the Internet.
12. Human-powered search provides search results created by human researchers.
Because the system is human powered, the search results are typically more accurate,
definitive, and complete. With human-powered search, you do not need to examine a
long list of search results to find what you are looking for. Each search leads to one
page of information on your topic with links to more sources of information.
13. Telnet enables a user to log on to another computer and access its public files. FTP
allows someone to copy a file from another computer to his or her own computer.
14. Content streaming is a method for transferring multimedia files over the Internet so
that the data stream of voice and/or picture plays continuously, without a break. It
also enables users to browse large files in real time.
15. The Internet Corporation for Assigned Names and Numbers (ICANN) is responsible
for managing IP addresses and Internet domain names. One of its primary concerns is
to make sure that each domain name represents only one individual or entity—the one
that legally registers it.
16. A Uniform Resource Locator (URL) is a Web address that specifies the exact location
of a Web page using letters and words that map to an IP address and a location on the
host. The URL gives those who provide information over the Internet a standard way
to designate where Internet resources such as servers and documents are located.
Consider the URL for Cengage, http://www.cengage.com/. The “http” specifies the
access method and tells your software to access a file using the Hypertext Transport
Protocol. This is the primary method for interacting with the Internet.
17. Content streaming is a method of transferring large media files over the Internet so
that the data stream of voice and pictures plays more or less continuously as the file is
being downloaded. For example, rather than wait for an entire 5 MB video clip to
download before they can play it, users can begin viewing a streamed video as it is
being received. One advantage of streaming movies is that it allows networks to
charge viewers to watch their episodes on the Internet. Also, the consumer now has
more options in how they view programming – via mobile devices or television.
18. An intranet uses Internet technology and WWW standards to develop isolated or
partially isolated internal networks.
9. Principles of Information Systems, 12th
Edition
Examples of intranet uses include networking mobile sales forces, developing on-line
employee handbook applications, and the protection of sensitive internal information.
Anything that an organization doesn’t want the general public to see can be placed on
an intranet.
19. An extranet extends selected resources of an intranet out to a group of its customers,
suppliers, or other business partners. Like an intranet, it is based on Web
technologies.
Discussion Questions
1. The Internet is the world’s largest computer network. The Internet is actually a
collection of interconnected networks, all freely exchanging information using a
common set of protocols. More than 1 billion computers, or hosts, make up today’s
Internet, supporting nearly 2:7 billion users.
The Internet transmits data from one computer (called a host) to another. The set of
conventions used to pass packets from one host to another is known as the Internet
Protocol (IP). Many other protocols are used with IP. The best known is the
Transmission Control Protocol (TCP). TCP is so widely used that many people refer
to the Internet protocol as TCP/IP, the combination of TCP and IP used by most
Internet applications. Each computer on the Internet has an assigned IP address for
easy identification. A Uniform Resource Locator (URL) is a Web address that
specifies the exact location of a Web page (using letters and words that map to an IP
address) and the location on the host.
2. The use of social media in business is called Enterprise 2.0. Enterprise 2.0
applications, such as Salesforce’s Chatter, Jive Software’s Engage, and Yammer
enable employees to create business wikis, support social networking, perform
blogging, and create social bookmarks to quickly find information.
Not everyone is happy with social networking sites, however. Employers might use
social networking sites to find personal information about you. Some people worry
that their privacy will be invaded or their personal information used without their
knowledge or consent.
3. The task of designing a Web site has become much more complicated as the range of
mobile devices we use to access the Web has expanded. Soon, if not already, more
people will access the Web using some type of mobile device rather than a desktop
computer. The challenge for Web site designers is to figure out how to provide a
pleasing Web browsing experience on various devices. One approach is the use of
responsive Web design—a means of providing custom layouts to devices based on
the size of the browser window.
10. Principles of Information Systems, 12th
Edition
Most browsers that run on small screen devices such as smartphones and tablets
shrink a Web page down to fit the screen and provide ways for zooming and moving
around the page. Although this approach works, it does not provide a pleasing
browsing experience. The text is too small to read, the links too small to tap, and too
much zooming and panning is tedious. An alternative approach is to use responsive
Web design to serve a single HTML document to all devices by applying different
style sheets based on the screen size to provide an optimal layout for that device. For
example, when the page is viewed on a desktop computer with a large screen, the
content can be placed into multiple columns with normal navigation elements. But
when that same page is viewed on a small smartphone screen, it appears in one
column with large links for easy tapping.
4. A primary concern is that each domain name should represent only one individual or
entity – the one that legally registers it.
5. Cloud computing offers tremendous advantages to businesses. By outsourcing
business information systems to the cloud, a business saves on system design,
installation, and maintenance. Employees can also access corporate systems from any
Internet-connected computer using a standard Web browser. The New York Stock
Exchange (NYSE), for example, is starting to offer cloud-computing applications that
let customers pay for the services and data they use on Euronext—a European market
for stocks, bonds, and other investments.
6. Several high-speed Internet services are available for businesses, including cable
modem connections from cable television companies, DSL connections from phone
companies, and satellite connections from satellite television companies.
7. Companies could use blogs and podcasts to inform its employees of different
company information, such as events, changes in policies, or new assignments.
Companies could also post blogs and podcasts informing the public of special events
or promotions.
8. Extensible Markup Language (XML) is a markup language designed to transport and
store data on the Web. Rather than using predefined tags like HTML, XML allows
the coder to create custom tags that define data. XML is extremely useful for
organizing Web content and making data easy to find.
9. A virtual private network (VNP) is a secure connection between two points on the
Internet. VPNs transfer information by encapsulating traffic in IP packets and sending
the packets over the Internet, a practice called tunneling.
10. Web services consist of standards and tools that streamline and simplify
communication among Web sites and that promise to revolutionize the way we
develop and use the Web for business and personal purposes.
11. Principles of Information Systems, 12th
Edition
The key to Web services is XML. Just as HTML was developed as a standard for
formatting Web content into Web pages, XML is used within a Web page to describe
and transfer data between Web service applications. It is easy to read and has wide
industry support.
11. One of the defining characteristics of Web 2.0 sites is social networking. Social
network sites provide members with a personal Web page and allow them to post
photos and information about themselves. These sites also allow members to send
messages to each other and post comments on each other’s pages. Members
accumulate friends through invitation. Special interest groups can be created and
joined as well.
12. Cyberbullying is the use of Internet technology to harass others. It is a very
significant issue. A recent survey by the Centers for Disease Control reveals that 16:2
percent of high school students report being bullied within the last year through social
media portals, email, chat rooms, instant messaging, texting, online games, and Web
sites. Teens who are bullied have a higher risk of drug and alcohol use, low self
esteem, poor grades, truancy, and health problems.
What makes cyberbullying different from in-person bullying is that it is pervasive.
Cyberbullying can be carried out 24 hours a day and 7 days a week, and a teen cannot
avoid it simply by skipping school.
13. Geolocation information does pose a risk to privacy and security. Many people prefer
that their location to remain unknown, at least to strangers, and often to acquaintances
and even friends. Recently, criminals have made use of location information to
determine when people are away from their residences so that they can burglarize
without fear of interruption.
14. In order for a Web site to receive frequent visitations, current, useful, and well-
organized information needs to be provided. To receive an initial visit, a Web site
must have the appropriate contents or keywords to be found by the search engine
software. Some hints for getting recognition for your site follow:
Search engines look for:
1. Keywords in the title.
2. Keywords on page or those repeated several times within the page.
Useful tips
Keywords: Choose three or more keywords representative of your page. Use these
words in your title and early in the text of the page. Too few keywords may limit the
relevance of your site. When possible, use synonyms to increase the chances of your
page being located. People seeking information will use many different words and
word combinations. Anticipating what words will be used as keywords in a search is
very difficult.
12. Principles of Information Systems, 12th
Edition
15. Artists can either use the Web to generate publicity about the issue and hope it results
in legitimate sales or join a group that is working to stop illegal copies on the Web.
This sometimes angers fans, which can also result in a loss of sales.
16. Student responses will vary.
17. The Internet is a collection of interconnected networks, all freely exchanging
information. An intranet is an internal corporate network built using Internet and
World Wide Web standards and products; used by employees to gain access to
corporate information. An extranet is a network based on Web technologies that links
selected resources of a company’s intranet with its customers, suppliers, or other
business partners.
Problem-Solving Exercises
1. Students should conduct research on the Web to identify the three most frequently
visited non-U.S.-based social networking sites.
2. Students should think of a business that they might like to establish and use a word
processor to define the business in terms of what product(s) or service(s) it provides,
where it is located, and its name.
3. Students should develop a brief proposal for creating a business Web site.
4. Students should develop a spreadsheet that shows the revenues from operating a
bakery Web site.
5. Students should develop a slide show using a graphics program, such as PowerPoint,
to show how a new Web site to sell used bicycles on campus can be started and
profitably run.
Team Activities
1. Students should plan, set up, and execute a meeting with another team wherein they
meet via use of a Web service such as GoToMeeting or WebEx.
2. Students should use the search engine Baidu to find information on several topics.
3. Students should form teams and describe a new and exciting Internet game.
4. Each team member should use a different search engine to find information about
podcasting.
13. Principles of Information Systems, 12th
Edition
Web Exercises
1. Students should use the Internet to identify the top three Internet issues of today.
2. Students should use the Internet to identify three organizations that make extensive
use of extranets to collaborate with their business partners
3. Students should identify half a dozen blogs of interest to them and use Really Simple
Syndication to receive a blog update from each site.
Career Exercises
1. Students should explore LinkedIn, a social media network for professional
networking.
2. Students should select two businesses that are of interest to them and research how
these businesses use the Web.
Case Studies
Case One: Social Networking Inside a Business
Discussion Questions
1. PepsiCo Russia consists of dozens of employee groups that have no shared history.
Making them work as a unit created a management challenge. To deal with this
challenge, PepsiCo Russia decided to create an employee intranet portal with a social
focus.
2. An intranet is an internal corporate network built using Internet and World Wide Web
standards and technologies. Employees of an organization use it to gain access to
corporate information. To achieve success, effective communication among different
employee groups is essential for most companies. An intranet allows them to
accomplish this.
Critical Thinking Questions
1. Document sharing platforms support product development by providing businesses
with collaborative workspaces and social computing tools to allow people at different
locations to work on projects together.
2. Student responses will vary. When it comes to document sharing and social media,
security is always an issue.
14. Principles of Information Systems, 12th
Edition
Case Two: War Games: Now More Real Than Ever
Discussion Questions
1. Massive multiplayer games can be used to develop skills necessary to succeed in the
real world.
2. Projects developed with EDGE produce life-like simulation in which objects and
people behave as they would in the real world.
Critical Thinking Questions
1. Massively multiplayer games can be used to improve collaboration between different
groups of first responders—a valuable skill that is difficult to develop without
actually being in the field.
2. Artificial intelligence and advanced computational steering of objects could be
adapted to develop projects that serve federal, state, and local emergency agencies
and private sector partners across the nation in the event of a terrorist threat.
Questions for Web Case
Altitude Online: The Internet, Web, Intranet, and Extranets
Discussion Questions
1. The decision to implement a new ERP will not impact the company’s public-facing
online presence. It will, however strongly impact the company’s intranet applications.
Jon and his team needed to design a dashboard application that provided employees
with access to pertinent corporate systems.
2. Besides core information systems, the dashboard would also provide access to
industry news, and Web 2.0 applications that supported knowledge managements,
and communication between workers.
Critical Thinking Questions
1. Student responses will vary.
2. Student responses will vary.
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