Free Essay

Kaplan It 530 Unit 1

In:

Submitted By nodqforums
Words 1449
Pages 6
Unit 1: Exploring DNS
Kaplan University

IT 530

July 2, 2013 Unit 1: Exploring DNS
A domain name system (DNS) serves an important role for those who wish to access other networks, which includes websites. DNS allows for users to be able to be able to access Internet websites through a unique name rather than having to memorize a lengthy set of numbers and periods. In addition, DNS allows for the physical hosting location of a network or website to change transparently without anyone noticing. This is more commonly referred to as when a website changes hosts. Furthermore, DNS serves important functions related to mail by allowing users to connect, send, and receive email messages based off of the DNS of the mail server for a specific network (Karrenberg, 2004).
Exploring Hierarchies All domains follow a certain hierarchy top to bottom hierarchy. The order for this hierarchy is:
1. root domain
2. top level
3. second level
4. sub-domain
The root domain is a top-level domain that refers to the Internet. This is mostly maintained by ICANN, which is a private organization that maintain this area. ICANN manages the internet protocol addresses as well as the DNS root zones. ICANN also manages the DNS policy on naming abilities for top level domains ("INETDAEMON.com," 2013).
The level that most users will first visibly notice when connecting to a domain through DNS is the top level domain. In this domain is the area where users will see .com, .net, and .org, which is the extension of most websites. In addition, government websites are also considered top level domains. Government websites can be defined as country code domains or more individualized government coded websites. An example of a country code domain would be .ca, which refers to Canada. In the United States, people can connect to websites such as .gov (government websites), .mil (US military websites), and .edu (educational websites). These websites are considered restricted and require additional information in order to receive this domain extension. An example would be Kaplan University, which needed to show proof of accreditation before they were able to register the domain Kaplan.edu. There are other top level domains that users are less familiar with such as .aero, .biz, .info, and several others ("INETDAEMON.com," 2013).
The second level domain belongs to the organization or individual who purchased the domain. These individuals or organizations are responsible for where their domain is hosted and the DNS that the domains are pointed to. An example would be google.com. In the domain name, google is the second level and the .com is the top level of the domain ("INETDAEMON.com," 2013).
The last main level of hierarchy that users will commonly see is a sub-domain. Sub-domains point to a directory that is hosted on a website and allows for that directory to be included in the period before the domain name. Google implores subdomains on a few occasions. An example would be: maps.google.com. In this domain the maps directory is considered the sub-domain, google is the second level domain, and .com is the top level domain. In most cases, sub-domains are used to highlight important areas of the website that have many features or require additional security clearances to access ("INETDAEMON.com," 2013).
IP Configuration Within the storage of a website, are zone files or DNS records that are used to map the URLS to the IP (Internet Protocol) address of the domain. An IP address is a unique set of numbers that is separated by periods. The URL a person types into the browser area of a website allows for them to be forwarded to the IP address that the domain is hosted on. Websites are not the only aspect of the Internet that uses IP addresses. Individual consumer’s home computers and networks also carry IP addresses. There are many different kind of DNS records that can be found on a website. Some examples are:
• A
• AAAA
• CNAME
• MX
• PTR
• NS
• SOA
• SRV
• TXT
• NAPTR
One of the most important records that is stored is the A record, which assigns an IP address to a domain or subdomain. CNAME and MX records are important for mail clients, which require IP addresses to be set to the mail servers in order for the mail servers to work efficiently ("DEBIANHELP," n.d.).
The last really important record is the NS record, which controls the nameserver of the domain. The nameserver points the domain to where it is hosted on the web server. Without an NS record, a person would not be able to enter the domain’s top and second level domain to be able to find the website location. Instead, users would have to type in the IP address of the domain to be able to find the website. An example IP address would be 211.1.13.115 ("DEBIANHELP," n.d.).
IPv4 vs. IPv6 IP addresses are most familiar to users with a set of four blocks of numbers, each number set contains one to three numbers that is separated by periods. This is commonly referred to as IPv4 (Internet Protocol Version 4).
As of 1990 about 1/8th of all available IP addresses was currently in use and by 1995 the amount of available IP addresses was done to 1/4th ("IPv6.com," n.d.). This created an issue that in 1994 the Internet Engineering Task Force decided to try and fix with the introduction of IPv6 (Internet Protocol Version 6) or also commonly referred to as Internet Protocol Next Generation. The main purpose of IPv6 was to massively expand the number of available IP addresses that could be used within networks and the Internet (Beal, 2013).
There is one extremely noticeable difference between the IPv4 and IPv6. As previously stated the IPv4 uses a 32 bit address scheme where each set of numbers is separated by periods. In IPv6 the address scheme uses a 128 bit address that is written in hexadecimal code and is separated by colons. A great example would be: 1.160.10.240 (IPv4) versus 3ffe:1900:4545:3:200:f8ff:fe21:67cf (IPv6).
IPv6 came with a number of great additional features in addition to having an almost unlimited number of IP addresses that can be used. IPv6 also allows for a more simplified header format, efficient routing, superior multicast routing, and auto-configuration. In addition, the IPv6 removed the need to have a Network Address Translation (NAT). Websites can be hosted using IPv6 by having an AAAA record, which is almost identical to the A record found in the DNS records of the domain with the exception of the IP address format.
One of the biggest issues with deploying IPv6 is the costs associated with the change. Many companies, organizations, and governments had to invest in new software and hardware that would be compatible with IPv6, which took a number of years. It took a number of years before organizations were ready to invest in this recommended change that occurred in 1994. By the early 2000s, many organizations and institutions had not switched, even though almost 2/3rds of the IPv4’s had been used already ("IPv6.com," n.d.). On September 14, 2012, Europe officially ran out of available for IPv4 addresses and it was expected that North America will have run out by June of 2013 (Beijnum, 2012).
The lengthy switch has been known for years; however, the switch is not as straight forward as many people would like. The reason is because the two different IP address format are not compatible with each other, which then requires the Internet Service Providers (ISP), web hosts, network manufactures, and end users to all switch over. The good news is that companies and organizations are constantly switching and the full benefits of IPv6 will be reached once all organizations switch over (Beijnum, 2012). References
Beal, V. (2013). What is the difference between IPv6 and IPv4. Retrieved from http://www.webopedia.com/DidYouKnow/Internet/ipv6_ipv4_difference.html
Beijnum, I. V. (2012, September 14). Europe officially runs out of IPv4 addresses. ARS Technica. Retrieved from http://arstechnica.com/information-technology/2012/09/europe-officially-runs-out-of-ipv4-addresses/
DNS records. (n.d.). Retrieved from http://www.debianhelp.co.uk/dnsrecords.htm
IPv6 History and Timeline. (n.d.). Retrieved from http://www.ipv6.com/articles/general/timeline-of-ipv6.htm
Karrenberg, D. (2004, March 1). The Internet domain name system for nonexperts. Internet Society. Retrieved from http://www.internetsociety.org/internet-domain-name-system-explained-non-experts-daniel-karrenberg
Resource Records. (2013). Retrieved from http://www.inetdaemon.com/tutorials/internet/dns/configuration/zone_files/resource_records/index.shtml

Similar Documents

Premium Essay

Activity Based Costing in Forging Industry

...flexible manufacturing systems (FMS) with the A(2) level of automation. We propose a new model for the implementation of ABC using the product cost tree concept. First, the required resources and activities for each part are recorded, and then their costs are calculated using the appropriate cost formulae. This model was applied in a forging industry. A comparison and analysis between ABC and TC was then carried out based on the computational results obtained from the case study. The results indicate that the ABC outputs are more reliable than the TC outputs, and thus the ABC approach is a more acceptable tool for parts costing in FMS. Keywords: Costing; Activity-based costing; Cost management; Flexible manufacturing; Product cost tree concept 1. Introduction Increasing worldwide competition has forced manufacturing organizations to seek to produce high-quality products more quickly and at a competitive cost. In order to reach these goals, manufacturing organizations have been required to become more flexible, integrated and highly automated. However, since initial and operating costs are high, advanced manufacturing system users are concerned with achieving high system utilization. Despite the advantages of having high levels of automation,...

Words: 9004 - Pages: 37

Premium Essay

Video Conferencing

...Ex-MBA 2011-2014 Semester -1 Subject: Technology in Business ------------------------------------------------- VIDEO CONFERENCING – A BOON TO COMPANIES TO REDUCE COSTS, TIME AND SAVE OUR ENVIRONMENT Completed By, Shantesh Varik Roll No: 2011G14 INTRODUCTION – Aim and Objective Videoconferencing is a virtual conference like setup using a number of telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously. Videoconferencing is slightly different from videophone calls as it is designed to serve a conference rather than individuals. In a tight economy, with companies spending much less on IT, the tech giants will take growth wherever they can find it. The Wall Street Journal reported recently that Cisco and HP are in a pitched battle for customers for their high-end teleconferencing systems. According to the report, it's "one of the few technologies that has benefited from the downturn, growing 30% from last year as businesses look to reduce travel expenses." Cisco, HP, Nortel, and telepresence-focused players like Teleris have developed impressive, beautiful systems that make you feel like you're in the same room with your colleagues. The catch is that not only will you save money, but you'll also reduce your environmental footprint through reduced travel. These companies are cashing in on the business world's pressing need to cut costs, while also appealing to the desire to get green...

Words: 4013 - Pages: 17

Premium Essay

Research in Management Accounting Innovations

...The current issue and full text archive of this journal is available at www.emeraldinsight.com/1176-6093.htm Research in management accounting innovations An overview of its recent development Nur Haiza Muhammad Zawawi Department of Accounting and Finance, University of Malaysia Terengganu, Kuala Terengganu, Malaysia and School of Accounting, La Trobe University, Melbourne, Australia, and Management accounting innovations 505 Zahirul Hoque School of Accounting, La Trobe University, Melbourne, Australia Abstract Purpose – The purpose of paper is to present a review of the literature on management accounting innovations (MAIs). Specifically, it explores recent developments in research on MAIs and offers suggestions for future research. The review differs from existing reviews by its specific focus on MAIs and the recent time period covered. In this paper, MAIs refer to the adoption of “newer” or modern forms of management accounting systems such as activity-based costing (ABC), activity-based management, time-driven ABC, target costing, and balanced scorecards. Design/methodology/approach – The paper presents a review of findings from journal articles published in 22 notable accounting journals. Findings – The review finds that research on MAIs has intensified during the period 2000-2008, with the main focus on exploring the extent to which a host of organizational and environmental factors influence the implementation and use of MAIs in organizations. In addition, research...

Words: 21564 - Pages: 87

Premium Essay

Phd Thesis

...Towards a conceptual framework for strategic cost management - The concept, objectives, and instruments - Von der Fakultät für Wirtschaftswissenschaften der Technischen Universität Chemnitz genehmigte Dissertation zur Erlangung des akademischen Grades Doctor rerum politicarum (Dr. rer. pol.) vorgelegt von Ibrahim Abd El Mageed Ali El Kelety geboren am 11.01.1965 in El Menoufia - Ägypten eingereicht am: 14. Juni 2006 Gutachter: Prof. Dr. Uwe Götze Prof. Dr. Dr. h.c. Jürgen Bloech Prof. Dr. Peter Schuster Tag der mündlichen Prüfung: 18. Juli 2006 Acknowledgement To the Almighty God “ALLAH” Who have granted me all these graces to fulfill this work and Who supported me in all my life. To Him I extend my heartfelt thanks. It is a pleasure to express my sincere and deepest heartfelt gratitude to my “Doktorvater“ Prof. Dr. Uwe Götze for his kind supervision, continuous encouragement, valuable enthusiastic discussion and unfailing advice throughout the present work, as well as financial support during my latest period of study in Germany. He assisted in all matters, provided solutions to different problems. Prof. Dr. Uwe Götze supported and helped me during my learning period in Germany and writing this thesis. I am very lucky being one of his students. I would like to express my deep thanks to Prof. Dr. Dr. h.c. Jürgen Bloech - Georg-August University of Göttingen - for his kind acceptance to act as an examiner. I would also like to express my sincere thanks to Prof. Dr. Peter...

Words: 197356 - Pages: 790

Premium Essay

Consumer Behaviour

...Each observation measures one or more properties (such as weight, location, color) of observable bodies distinguished as independent objects or individuals. In survey sampling, weights can be applied to the data to adjust for the sample design, particularly stratified sampling (blocking). Results from probability theory and statistical theory are employed to guide practice. In business and medical research, sampling is widely used for gathering information about a population. Contents [hide]  * 1 Process * 2 Population definition * 3 Sampling frame * 4 Probability and nonprobability sampling * 5 Sampling methods * 5.1 Simple random sampling * 5.2 Systematic sampling * 5.3 Stratified sampling * 5.4 Probability proportional to size sampling * 5.5 Cluster sampling * 5.6 Quota sampling * 5.7 Convenience sampling or Accidental Sampling * 5.8 Line-intercept sampling * 5.9 Panel sampling * 6 Replacement of selected units * 7 Sample size * 7.1 Steps for using...

Words: 7414 - Pages: 30

Premium Essay

Acf 2011 Sem 2

...Accredited Tertiary Courses Listing 2012 Accredited Tertiary Courses Listing 2012 – as at 26 September 2012 1 2012 Accredited Undergraduate Courses AUSTRALIAN CAPITAL TERRITORY The Australian National University University of Canberra NEW SOUTH WALES Australian Catholic University Australian Institute of Higher Education Avondale College Charles Sturt University Kings Own Institute Macquarie University Southern Cross University Top Education Institute The University of New England The University of New South Wales The University of Newcastle The University of Sydney University of Technology, Sydney University of Western Sydney University of Wollongong Williams Business College NORTHERN TERRITORY Charles Darwin University QUEENSLAND Australian Catholic University Bond University Central Queensland University Christian Heritage College Griffith University James Cook University Queensland University of Technology The University of Queensland The University of Southern Queensland University of the Sunshine Coast SOUTH AUSTRALIA Flinders University Kaplan Business School The University of Adelaide University of South Australia Open Universities (conferred by Uni of SA) TASMANIA University of Tasmania VICTORIA Australian Catholic University Cambridge International College Carrick Higher Education Deakin University Holmes Institute Holmesglen Institute of TAFE La Trobe University Melbourne Institute of Technology Monash University Northern Melbourne Institute of TAFE RMIT...

Words: 16200 - Pages: 65

Premium Essay

Management Accounting

...visit the Science and Technology Books website at www.elsevierdirect.com/rights for further information Notice No responsibility is assumed by the publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any methods, products, instructions or ideas contained in the material herein. British Library Cataloguing in Publication Data A catalogue record for this book is available from the British Library Library of Congress Cataloging-in-Publication Data A catalog record for this book is available from the Library of Congress ISBN: 978-0-08-055450-1 (Volume 3) ISBN: 978-0-08-087929-1 (Volumes 1, 2 and 3) For information on all Elsevier publications visit our website at www.elsevierdirect.com Printed and bound in Hungary 09 10 11 12 13 10 9 8 7 6 5 4 3 2 1 Contributors to Volume 3 Robert H. Chenhall Mark A. Covaleski Antonio Davila Mark W. Dirsmith David A....

Words: 187223 - Pages: 749

Premium Essay

Seismic Evaluation

...1 and 21 highlights the nonlinear static pushover analysis. It is an efficient method for the performance evaluation of a structure subjected to seismic loads. Also ATC40 covers step by step procedures for pushover analysis to determine the capacity curve, capacity spectrum method and displacement coefficient method were briefly elaborated. By using these procedures this report is detailed with modeling aspects of the hinge behavior, acceptance criteria and locate the performance point. Hence, ATC40 serves as guideline for the starting of seismic evaluation process. Federal Emergency Management Agency document 356 (FEMA356)2 contains simplified nonlinear analysis procedure (pushover analysis) to determine the displacements demand imposed on the building expected to inelastically and the conversion of the results to the capacity diagram are based only on the fundamental vibration mode of the elastic...

Words: 7169 - Pages: 29

Premium Essay

Income Inequality in the United States

...Draft An End in Itself and a Means to Good Ends: Draft Why Income Equality is Important Arthur MacEwan[1] March 2009 “The social system is not an unchangeable order beyond human control but a pattern of human action.”—John Rawls (1971, p. 102) In recent years “poverty reduction” has become the watchword in development agencies, in international lending institutions, and among development economists generally. The focus on poverty reduction reached a high point perhaps with the articulation of the Millennium Development Goals (MDGs) and with the extensive analytic work that has accompanied the MDGs.[2] Yet, much of the discussion of poverty reduction and economic development in low and middle income countries has either ignored the issue of income distribution or has tended to view income distribution only in terms of its impact on economic growth. Poverty and inequality, however, are intimately bound up with one another.[3] Both as an analytic issue and as a policy issue, there are severe limitations in attempting to deal with poverty – or, more broadly, with economic well-being – without also examining income inequality. Indeed, it is questionable that we can even define poverty independently of income distribution. In this essay, I want to develop the argument that economists and economic policy-makers should focus much greater attention on inequality as measured by the distribution of income (and wealth). The traditional...

Words: 9565 - Pages: 39

Free Essay

Gre Method

...10 Steps to Earn a High GRE Score The following is a guide to scoring high on the GRE test. If you follow these steps, your GRE score will improve. 1. Relax: Preparing for the GRE can be stressful. Try to focus on the task at hand and not so much on everything else you have to do. If you take GRE test prep step-by-step, day-by-day, and give yourself breaks when your body needs them, you'll be able to concentrate on GRE studies a lot better. 2. GRE Diagnostic Test: Begin GRE test prep with a GRE practice test to find out what you're good at, and more importantly, what you're not good at. Correct your completed practice test and evaluate the questions you missed. What kind of questions did you miss? Are they mostly Quantitative or mostly Verbal? What score would you give yourself on Analytical Writing? Did you miss a lot of analogies but do well on reading comprehension? With this information you'll be able to focus your GRE test prep studies on your weaknesses. 3. GRE Study Plan: With your GRE weaknesses in mind, make a very specific study plan for yourself. You should know what, how, and when you are going to study for the GRE test. Put your study plan somewhere in plain view, and make sure you stick to your plan. Try to keep GRE test prep interesting by planning to study different things in different ways. For example, study GRE vocabulary from flash cards one day, from a list the second day, and by reading and learning words in context the third day. 4. GRE Vocabulary: ...

Words: 7186 - Pages: 29

Premium Essay

Delone and Mclean's Is Model

...THE DELONE AND MCLEAN MODEL OF INFORMATION SYSTEM SUCCESS 9 The DeLone and McLean Model of Information Systems Success: A Ten-Year Update WILLIAM H. DE LONE AND EPHRAIM R. MCLEAN W ILLIAM DELONE is an Associate Professor of Information Systems and Chair of the Information Technology Department at the Kogod School of Business at American University in Washington, DC. Professor DeLone’s primary areas of research include the assessment of information systems effectiveness and value, the implementation and use of information technology in small and medium-sized businesses, and the global management of information technology. He has been published in various journals including Information Systems Research, MIS Quarterly, DATABASE, Journal of Global Information Management, and Journal of Information Technology Management. Professor DeLone earned a B.S. in mathematics from Villanova University, an M.S. in industrial administration from Carnegie Mellon University, and a Ph.D. in Computers and Information Systems from the University of California, Los Angeles. EPHRAIM R. MCLEAN is a Regents’ Professor and George E. Smith Eminent Scholar’s Chair in Information Systems in the Robinson College of Business at Georgia State University, Atlanta. Prior to coming to Georgia State University in 1987, he was on the faculty of the University of California, Los Angeles (UCLA) for 18 years. Dr. McLean’s research focuses on the management of information services, the value of IS investments...

Words: 9920 - Pages: 40

Premium Essay

Consumer Bahavior

...CHANG M.T. Jimmy by Emily, Kit Ying SIN Institute of Textiles & Clothing The Hong Kong Polytechnic University May 2015 ACKNOWLEDGEMENTS CERTIFICATE OF ORIGINALITY I hereby declare that this thesis is my own work and that, to the best of my knowledge and belief, it reproduces no material previously published or written, nor material that has been accepted for the award of any other degree or diploma, except where due acknowledgement had been made in the text. _____________________________________________________(Signed) __________________________________________________(Name of student) ABSTRACT Summary of the contents and finding of the thesis briefly LIST OF TABLES Page Table 1: Summary Table of Hypotheses LIST OF FIGURES Page Figure.1: Active Usage of Top 10 Social Media Platform Figure.2: Alexander McQueen Fashion house business page on Facebook Figure.3: Hierarchy of Effect (HOE) model Figure.4 Proposed Conceptual Framework TABLES OF CONTENTS Page ACKNOWLEDGEMENTS CERTIFICATE OF ORIGINALITY ABSTRACT LIST OF FIGURES LIST OF...

Words: 13347 - Pages: 54

Premium Essay

Cost Accounting

...Cost Allocation in Multiagent Settings Author(s): Madhav V. Rajan Source: The Accounting Review, Vol. 67, No. 3 (Jul., 1992), pp. 527-545 Published by: American Accounting Association Stable URL: http://www.jstor.org/stable/247976 Accessed: 13/12/2008 09:19 Your use of the JSTOR archive indicates your acceptance of JSTOR's Terms and Conditions of Use, available at http://www.jstor.org/page/info/about/policies/terms.jsp. JSTOR's Terms and Conditions of Use provides, in part, that unless you have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use. Please contact the publisher regarding any further use of this work. Publisher contact information may be obtained at http://www.jstor.org/action/showPublisher?publisherCode=aaasoc. Each copy of any part of a JSTOR transmission must contain the same copyright notice that appears on the screen or printed page of such transmission. JSTOR is a not-for-profit organization founded in 1995 to build trusted digital archives for scholarship. We work with the scholarly community to preserve their work and the materials they rely upon, and to build a common research platform that promotes the discovery and use of these resources. For more information about JSTOR, please contact support@jstor.org. American Accounting Association is collaborating with JSTOR to digitize, preserve and extend access to...

Words: 7156 - Pages: 29

Premium Essay

Acca F2 Notes

...downloading from other websites. r The best things in life are free IMPORTANT!!! PLEASE READ CAREFULLY To benefit from these notes you must watch the free lectures on the OpenTuition website in which we explain and expand on the topics covered In addition question practice is vital!! You must obtain a current edition of a Revision / Exam Kit from one of the ACCA approved content providers they contain a great number of exam standard questions (and answers) to practice on. You should also use the free “Online Multiple Choice Tests” and the “Flashcards” which you can find on on the OpenTuition website. http://opentuition.com/acca/ December 2015 Examinations  Paper F2 ACCA F2 / FIA FMA Free lectures are available on opentuition.com CONTENTS 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Accounting for Management Sources of Data Presenting Information Cost Classification Inventory Control Accounting for labour Accounting for Overheads The Management Accountant’s Profit Statement – Absorption Costing The Management Accountant’s Profit Statement – Marginal Costing Process Costing – Introduction Process Costing – Losses Process Costing – Work-in-Progress Process Costing – Joint Products...

Words: 34562 - Pages: 139

Premium Essay

Phd, Ascascacacaj

...Marketing Management 14 PHILIP KOTLER Northwestern University KEVIN LANE KELLER Dartmouth College Prentice Hall Boston Columbus Indianapolis New York San Francisco Upper Saddle River Amsterdam Cape Town Dubai London Madrid Milan Munich Paris Montreal Toronto Delhi Mexico City Sao Paulo Sydney Hong Kong Seoul Singapore Taipei Tokyo Editorial Director: Sally Yagan Editor in Chief: Eric Svendsen Executive Editor: Melissa Sabella Development Editor: Elisa Adams Director of Editorial Services: Ashley Santora Editorial Project Manager: Kierra Bloom Editorial Assistant: Elizabeth Scarpa Director of Marketing: Patrice Lumuba Jones Senior Marketing Manager: Anne Fahlgren Senior Managing Editor: Judy Leale Production Project Manager: Ann Pulido Senior Operations Supervisor: Arnold Vila Creative Director: John Christiano Senior Art Director: Blair Brown Text and Cover Designer: Blair Brown Lead Media Project Manager: Lisa Rinaldi Editorial Media Project Manager: Denise Vaughn Full-Service Project Management: Sharon Anderson/BookMasters, Inc. Composition: Integra Printer/Binder: Courier/Kendallville Cover Printer: Lehigh-Phoenix Color/Hagerstown Text Font: 9.5/11.5, Minion Credits and acknowledgments borrowed from other sources and reproduced, with permission, in this textbook appear on appropriate page within text. Copyright © 2012, 2009, 2006, 2003, 2000 Pearson Education, Inc., publishing as Prentice Hall, One Lake Street, Upper Saddle River, New Jersey 07458. All...

Words: 8292 - Pages: 34