...[Ethernet or Token Ring] [Ricky Clark] [IT/242] Due: [6/20/2014] [Sokly Vann] Saguaro Federal has mainframes for all of its banks and businesses. Must the company use the Ethernet or Token Ring protocol? Explain your choice. Why is this choice appropriate? In this particular situation I would have to say that the token ring protocol should be used for its banks and businesses and the reason that I say this is because the banks and business seem to not all be located in the same building they are spread out. In Token Ring LAN’s each station is connected to a wiring concentrator called a multistation access unit using UTP or STP. The access method which is used on a Token Ring is called token which is a special data packet that is generated by the first computer that comes online in a token ring network With this being said this seems the most reasonable and secure because the computers cannot operate without a token from the other. XYZ Technology Consultants has offices on the second, third, and fourth floors of the office building it occupies. Must the company use the Ethernet or Token Ring protocol? Explain your choice. Why is this choice appropriate? In the XYZ technology consultants situation I would suggest an Ethernet protocol. The reason that I came to this conclusion was due in part of the company being located in one building on various floors so everything is central. Ethernet is the most used networking that is available because of the pricing and...
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...Assignment: VLAN IT/242 January 19, 2012 Instructor: Dr. Jimmie Flores Assignment: VLAN VLAN short for Virtual Local Area Network is a new LAN technology that allows addition of a cost effective network that does not compromise security or performance of the network. VLAN is defined as “a switched network that is logically segmented on an organizational basis; either by functions, project teams, or applications rather than on a physical or geographical basis” (Regan, (2004)). Using VLAN’s are excellent for organizations with multiple departments since VLAN can be created for the specific needs of each department even ignoring the need of a central physical location. “A VLAN can be thought of as a broadcast domain that exists within a defined set of switches” (Regan, (2004)). Switches are nowadays more economical in price so organizations are replacing older hubed networks with switched networks designed for using VLAN’s. VLAN’s are able to divide and isolate a network into different broadcast domains. According to Regan, (2004) VLAN’s are basically a bridge domain that has all broadcast traffic isolated and contained within the VLAN. VLAN’s also provides complete and total isolation from other VLAN’s. Security is also improved by using VLAN’s since they are able to isolate groups. Users are not able to physically connect to a VLAN so access can’t be gained from just plugging into the switch (Regan, (2004)). Servers also can be assigned to multiple...
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...Don't forget to check out the Online Learning Center, www.mhhe.com/forouzan for additional resources! Instructors and students using Data Communications and Networking, Fourth Edition by Behrouz A. Forouzan will find a wide variety of resources available at the Online Learning Center, www.mhhe.comlforouzan Instructor Resources Instructors can access the following resources by contacting their McGraw-Hill Representative for a secure password. PowerPoint Slides. Contain figures, tables, highlighted points, and brief descriptions of each section. Complete Solutions Manual. Password-protected solutions to all end-of-chapter problems are provided. a Pageout. A free tool that helps you create your own course website. D Instructor Message Board. Allows you to share ideas with other instructors using the text. a o Student Resources The student resources are available to those students using the book. Once you have accessed the Online Learning Center, click on "Student Resources," then select a chapter from the drop down menu that appears. Each chapter has a wealth of materials to help you review communications and networking concepts. Included are: Chapter Summaries. Bulleted summary points provide an essential review of major ideas and concepts covered in each chapter. a Student Solutions Manual. Contains answers for odd-numbered problems. Glossary. Defines key terms presented in the book. Flashcards. Facilitate learning through practice and review. a Animated Figures...
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... * Internetworking Basics * Introduction to LAN Protocols * Introduction to WAN Technologies * Bridging and Switching Basics * Routing Basics * Network Management Basics * Open System Interconnection Protocols LAN Technologies A LAN is a high-speed data network that covers a relatively small geographic area. It typically connects workstations, personal computers, printers, servers, and other devices. LANs offer computer users many advantages, including shared access to devices and applications, file exchange between connected users, and communication between users via electronic mail and other applications. The following articles provide information different LAN technologies: * Ethernet Technologies * Token Ring/IEEE 802.5 WAN Technologies A WAN is a data communications network that covers a relatively broad geographic area and that often uses transmission facilities provided by common carriers, such as telephone companies. WAN technologies generally function at the lower three layers of the OSI reference model: the physical layer, the data link layer, and the...
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...INFORMATION RESOURCE GUIDE Computer, Internet and Network Systems Security An Introduction to Security i Security Manual Compiled By: S.K.PARMAR, Cst N.Cowichan Duncan RCMP Det 6060 Canada Ave., Duncan, BC 250-748-5522 sunny@seaside.net This publication is for informational purposes only. In no way should this publication by interpreted as offering legal or accounting advice. If legal or other professional advice is needed it is encouraged that you seek it from the appropriate source. All product & company names mentioned in this manual are the [registered] trademarks of their respective owners. The mention of a product or company does not in itself constitute an endorsement. The articles, documents, publications, presentations, and white papers referenced and used to compile this manual are copyright protected by the original authors. Please give credit where it is due and obtain permission to use these. All material contained has been used with permission from the original author(s) or representing agent/organization. ii T eofContent abl 1.0 INTRODUCTION........................................................................................................................................................... 2 1.1 BASIC INTERNET TECHNICAL DETAILS ........................................................................................................................ 2 1.1.1 TCP/IP : Transmission Control Protocol/Internet Protocol .........................................
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...TELECOMMUNICATION SWITCHING AND NETWORKS TElECOMMUNICATION SWITCHING NffiWRKS AND THIS PAGE IS BLANK Copyright © 2006, 2005 New Age International (P) Ltd., Publishers Published by New Age International (P) Ltd., Publishers All rights reserved. No part of this ebook may be reproduced in any form, by photostat, microfilm, xerography, or any other means, or incorporated into any information retrieval system, electronic or mechanical, without the written permission of the publisher. All inquiries should be emailed to rights@newagepublishers.com ISBN (10) : 81-224-2349-3 ISBN (13) : 978-81-224-2349-5 PUBLISHING FOR ONE WORLD NEW AGE INTERNATIONAL (P) LIMITED, PUBLISHERS 4835/24, Ansari Road, Daryaganj, New Delhi - 110002 Visit us at www.newagepublishers.com PREFACE This text, ‘Telecommunication Switching and Networks’ is intended to serve as a onesemester text for undergraduate course of Information Technology, Electronics and Communication Engineering, and Telecommunication Engineering. This book provides in depth knowledge on telecommunication switching and good background for advanced studies in communication networks. The entire subject is dealt with conceptual treatment and the analytical or mathematical approach is made only to some extent. For best understanding, more diagrams (202) and tables (35) are introduced wherever necessary in each chapter. The telecommunication switching is the fast growing field and enormous research and development are undertaken by...
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...Review Questions for Test-1 (with Answers): Chapter 1: Introduction to Data Communications Outline 1.1 Network Basics 1.2 Network Layer Model (most important) 1.3 Network Standards 1.4 Future Trends (least important) Answers to End-of-Chapter Questions 1. Describe the progression of communications systems from the 1800s to the present. Communications systems progression from the 1800s to the present: 1837 Invention of the telegraph 1876 Invention of the telephone 1877 Telephone system regulation begins in Canada 1878 Telephone system regulation begins in the United States 1879 Direct dialed long distance service begins 1880 Satellites begin to transmit international telephone calls 1881 Caterfone court decision permits non-Bell telephone equipment to be used 1970 Court permits MCI to provide long distance services 1984 Breakup of AT&T 1985 Cellular phones enter service 1996 Telecommunications Act of 1996 deregulates American telephone system 2. Why are network layers important? Communication networks are often broken into a series of layers, each of which can be defined separately, to enable vendors to develop software and hardware that can work together in the overall network. 3. Describe the four layers in the network model used in this book and what they do. • The application layer is the application software used by the user. • The network layer takes the message generated...
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...1.Комуникациски систем 11. Општиот модел на комуникациски систем се состои од ���� * Извор ���� * Предавател ���� * Систем за пренос ���� * Одредиште ���� * Медиум за пренос 12. Кои се основни задачи на еден комуникациски систем ���� * Синхронизација � ���* Адресирање 13. Кои од следните искази се точни за компјутерските мрежи ���� * Компјутерска мрежа е колекција од меѓусебно поврзани компјутери ������ Основен модел на компјутерска мрежа е клиент-клиент моделот ������ Денес компјутерските мрежи повеќе се применуваат заради поделба на информации и ресурси меѓу компјутерите ���� * Денес компјутерските мрежи повеќе се применуваат заради поделба на информации и ресурси меѓу луѓето ������ Основна поделба на комуникациски мрежи е на SAN и MAN 14. Кои од следните се популарни облици на е-трговија ���� * B2B ���� * C2C ���� * P2P ������ G2B ������ B2G 15. Кои од следниве искази не се точни за широко распространетите мрежи (WAN) ������ Покриваат голема географска област ���� * Јазлите во мрежата зависат од содржината на податокот кој го пренесуваат ���� * Најголема WAN е Интранет ������ Главна цел е да овозможи доверлив, брз и сигурен пренос на податоци ���� * Најчест пример на WAN која е иплементирана со преклопување на кола е комуникацијата терминал � компјутер 16. Брзината на пренос на податоци кај WAN e од ���� * 64Kbps кај WAN со пакетен пренос ���� * 2Мbps кај WAN со пренос на рамки ���� * 10Мbps кај WAN со асинхрон пренос ������ 64Kbps кај WAN со пренос на рамки ������ 2Мbps...
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...Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States SEVENTH EDITION Data Communications and Computer Networks A Business User’s Approach Curt M. White DePaul University Australia • Brazil • Japan • Korea • Mexico • Singapore • Spain • United Kingdom • United States Data Communications and Computer Networks: A Business User’s Approach, Seventh Edition Curt M. White Editor-In-Chief: Joe Sabatino Senior Acquisitions Editor: Charles McCormick, Jr. Senior Product Manager: Kate Mason Editorial Assistant: Courtney Bavaro Marketing Director: Keri Witman Marketing Manager: Adam Marsh Senior Marketing Communications Manager: Libby Shipp Marketing Coordinator: Suellen Ruttkay Media Editor: Chris Valentine Art and Cover Direction, Production Management, and Composition: PreMediaGlobal Cover Credit: © Masterfile Royalty Free Manufacturing Coordinator: Julio Esperas © 2013 Course Technology, Cengage Learning ALL RIGHTS RESERVED. No part of this work covered by the copyright herein may be reproduced, transmitted, stored or used in any form or by any means—graphic, electronic, or mechanical, including but not limited to photocopying, recording, scanning, digitizing, taping, Web distribution, information networks, or information storage and retrieval systems, except as permitted under Section 107 or 108 of the 1976 United States Copyright Act—without the prior written permission of the publisher. For product information and technology assistance...
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...CCNA Portable Command Guide Second Edition Scott Empson Cisco Press 800 East 96th Street Indianapolis, Indiana 46240 USA ii CCNA Portable Command Guide, Second Edition Scott Empson Copyright© 2008 Cisco Systems, Inc. Published by: Cisco Press 800 East 96th Street Indianapolis, IN 46240 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review. Printed in the United States of America First Printing July 2007 Library of Congress Cataloging-in-Publication Data Empson, Scott. Portable command reference / Scott Empson. -- 2nd ed. p. cm. ISBN 978-1-58720-193-6 (pbk.) 1. Computer networks--Examinations--Study guides. 2. Internetworking (Telecommunication)--Examinations--Study guides. 3. Electronic data processing personnel--Certification. I. Title. TK5105.5.E4352 2007 004.6--dc22 2007023863 ISBN-13: 978-1-5872-0193-6 ISBN-10: 1-58720-193-3 Warning and Disclaimer This book is designed to provide information about the Certified Cisco Networking Associate (CCNA) exam and the commands needed at this level of network administration. Every effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied. The information is provided on an “as is” basis. The author...
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...CCNA Portable Command Guide Second Edition Scott Empson Cisco Press 800 East 96th Street Indianapolis, Indiana 46240 USA ii CCNA Portable Command Guide, Second Edition Scott Empson Copyright© 2008 Cisco Systems, Inc. Published by: Cisco Press 800 East 96th Street Indianapolis, IN 46240 USA All rights reserved. No part of this book may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage and retrieval system, without written permission from the publisher, except for the inclusion of brief quotations in a review. Printed in the United States of America First Printing July 2007 Library of Congress Cataloging-in-Publication Data Empson, Scott. Portable command reference / Scott Empson. -- 2nd ed. p. cm. ISBN 978-1-58720-193-6 (pbk.) 1. Computer networks--Examinations--Study guides. 2. Internetworking (Telecommunication)--Examinations--Study guides. 3. Electronic data processing personnel--Certification. I. Title. TK5105.5.E4352 2007 004.6--dc22 2007023863 ISBN-13: 978-1-5872-0193-6 ISBN-10: 1-58720-193-3 Warning and Disclaimer This book is designed to provide information about the Certified Cisco Networking Associate (CCNA) exam and the commands needed at this level of network administration. Every effort has been made to make this book as complete and as accurate as possible, but no warranty or fitness is implied. The information is provided...
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...VOICE, VIDEO, AND DATA NETWORK CONVERGENCE VOICE, VIDEO, AND DATA NETWORK CONVERGENCE ARCHITECTURE AND DESIGN, FROM VOIP TO WIRELESS JUANITA ELLIS CHARLES PURSELL JOY RAHMAN Amsterdam Boston London New York Oxford San Francisco Singapore Sydney Tokyo Paris San Diego This book is printed on acid-free paper. Copyright 2003, Elsevier Science (USA). All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Permissions may be sought directly from Elsevier’s Science & Technology Rights Department in Oxford, UK: phone: (+44) 1865 843830, fax: (+44) 1865 853333, e-mail: permissions@elsevier.com.uk. You may also complete your request on-line via the Elsevier Science homepage (http://elsevier.com), by selecting “Customer Support” and then “Obtaining Permissions.” Explicit permission from Academic Press is not required to reproduce a maximum of two figures or tables from an Academic Press chapter in another scientific or research publication provided that the material has not been credited to another source and that full credit to the Academic Press chapter is given. Academic Press An imprint of Elsevier Science 525 B Street, Suite 1900, San Diego, California 92101-4495, USA http://www.academicpress.com Academic Press 84 Theobald’s Road, London WC1X 8RR...
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...CONTENTS: CASE STUDIES CASE STUDY 1 Midsouth Chamber of Commerce (A): The Role of the Operating Manager in Information Systems CASE STUDY I-1 IMT Custom Machine Company, Inc.: Selection of an Information Technology Platform CASE STUDY I-2 VoIP2.biz, Inc.: Deciding on the Next Steps for a VoIP Supplier CASE STUDY I-3 The VoIP Adoption at Butler University CASE STUDY I-4 Supporting Mobile Health Clinics: The Children’s Health Fund of New York City CASE STUDY I-5 Data Governance at InsuraCorp CASE STUDY I-6 H.H. Gregg’s Appliances, Inc.: Deciding on a New Information Technology Platform CASE STUDY I-7 Midsouth Chamber of Commerce (B): Cleaning Up an Information Systems Debacle CASE STUDY II-1 Vendor-Managed Inventory at NIBCO CASE STUDY II-2 Real-Time Business Intelligence at Continental Airlines CASE STUDY II-3 Norfolk Southern Railway: The Business Intelligence Journey CASE STUDY II-4 Mining Data to Increase State Tax Revenues in California CASE STUDY II-5 The Cliptomania™ Web Store: An E-Tailing Start-up Survival Story CASE STUDY II-6 Rock Island Chocolate Company, Inc.: Building a Social Networking Strategy CASE STUDY III-1 Managing a Systems Development Project at Consumer and Industrial Products, Inc. CASE STUDY III-2 A Make-or-Buy Decision at Baxter Manufacturing Company CASE STUDY III-3 ERP Purchase Decision at Benton Manufacturing Company, Inc. CASE STUDY III-4 ...
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...Windows Server® 2008 FOR DUMmIES ‰ by Ed Tittel and Justin Korelc Windows Server® 2008 For Dummies® Published by Wiley Publishing, Inc. 111 River Street Hoboken, NJ 07030-5774 www.wiley.com Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana Published by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600. Requests to the Publisher for permission should be addressed to the Legal Department, Wiley Publishing, Inc., 10475 Crosspoint Blvd., Indianapolis, IN 46256, (317) 572-3447, fax (317) 572-4355, or online at http:// www.wiley.com/go/permissions. Trademarks: Wiley, the Wiley Publishing logo, For Dummies, the Dummies Man logo, A Reference for the Rest of Us!, The Dummies Way, Dummies Daily, The Fun and Easy Way, Dummies.com, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and/or its affiliates in the United States and other countries, and may not be used without written permission...
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...Contents 1. Introduction 2. Assessment Test 3. Chapter 1: Getting Started with Ethical Hacking 1. Hacking: A Short History 2. What Is an Ethical Hacker? 3. Summary 4. Exam Essentials 5. Review Questions 4. Chapter 2: System Fundamentals 1. Exploring Network Topologies 2. Working with the Open Systems Interconnection Model 3. Dissecting the TCP/IP Suite 4. IP Subnetting 5. Hexadecimal vs. Binary 6. Exploring TCP/IP Ports 7. Understanding Network Devices 8. Working with MAC Addresses 9. Intrusion Prevention and Intrusion Detection Systems 10. Network Security 11. Knowing Operating Systems 12. Backups and Archiving 13. Summary 14. Exam Essentials 15. Review Questions 5. Chapter 3: Cryptography 2 1. Cryptography: Early Applications and Examples 2. Cryptography in Action 3. Understanding Hashing 4. Issues with Cryptography 5. Applications of Cryptography 6. Summary 7. Exam Essentials 8. Review Questions 6. Chapter 4: Footprinting and Reconnaissance 1. Understanding the Steps of Ethical Hacking 2. What Is Footprinting? 3. Terminology in Footprinting 4. Threats Introduced by Footprinting 5. The Footprinting Process 6. Summary 7. Exam Essentials 8. Review Questions 7. Chapter 5: Scanning Networks 1. What Is Network Scanning? 2. Checking for Live Systems 3. Checking for Open Ports 4. Types of Scans 5. OS Fingerprinting 6. Banner Grabbing 7. Countermeasures 8. Vulnerability Scanning 9. Drawing Network Diagrams 10. Using Proxies 11. Summary 12. Exam Essentials 13. Review Questions...
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