...Cabling Exercise 4.1.1 Why are standards so important for NICs, connectors, and media? Use your textbook and Internet research to justify your answer. Simple because Stability, Consistency, Minimization of packet errors. Exercise 4.1.2 The voltage for registering a bit of 1 on Ethernet can be as low as 2.5 volts or even 1 volt. Why is this so low when the capacity for transmitting electricity on the copper wire is so high? Use your textbook and Internet research to support your answer. Because the voltage (or current) used to transmit data needs only be high enough for the receiver to detect it. Making the voltage (much) higher would make the receiver electronics more difficult. Exercise 4.1.3 What are some applications of shielded copper cable? Why is the more expensive shielded cable used in these situations? Use your textbook or Internet research to support your answer. The extra covering in shielded twisted pair wiring protects the transmission line from electromagnetic interference leaking into or out of the cable. STP cabling often is used in Ethernet networks, especially fast data rate Ethernets. Exercise 4.1.4 Complete the entries in Table 4-1. Use your textbook and Internet research to compose your answer. The common connector for interfacing UTP wires to a computer for networking is the Registered Jack 45 (RJ-45) interface. This uses eight copper wires (four twisted pairs) to complete the connec- tion between interfaces. The pinout for these wires defines the...
Words: 721 - Pages: 3
...Standard Wiring Pinouts From: http://www.alatec.com/info/other.html | Standard wiring for an RJ11 or RJ12 connector, pairs are made from inside out. Pair 1 is the Blue pair, Pair 2 is the Orange pair, Pair 3 is the Green pair. | | 568A is used for a lot of Ethernet cables. It is one of the two most widely used standards. If you wire both ends of your cable using 568A, you’ll have a straight-through cable usable for most Ethernet applications. Wiring a cable with 568A on one end and 568B on the other will result in a crossover cable for connecting two hubs together, or two computers together. | | 568B is the most widely used standard for Ethernet cables. If you wire both ends of your cable using 568B, you’ll have a straight-through cable usable for most Ethernet applications. Wiring a cable with 568A on one end and 568B on the other will result in a crossover cable for connecting two hubs together, or two computers together. | | USOC RJ45 standard is not as widely used but is an acceptable standard for wiring Ethernet. It uses the two center pins for pair one, with subsequent pairs placed to the outside of each previous pair. Usually used for straight-through cables. | | Copyright © 2008 CP3, Inc. | CAT5e Straight-Through Cable Creation Guide Before you begin creating your CAT 5e straight-through (patch) cable, it’s important to point out that the method outlined here is only one method. It is by no means the only or best method. Also, make sure you have all the necessary...
Words: 912 - Pages: 4
... This is known as shielded twisted pair (STP). Ordinary wire to the home is unshielded twisted pair (UTP). Twisted pair is now frequently installed with two pairs to the home, with the extra pair making it possible for you to add another line (perhaps for modem use) when you need it. Twisted pair comes with each pair uniquely color-coded when it is packaged in multiple pairs. Different uses such as analog, digital, and Ethernet require different pair multiples. Although twisted pair is often associated with home use, a higher grade of twisted pair is often used for horizontal wiring in LAN installations because it is less expensive than coaxial cable. The wire you buy at a local hardware store for extensions from your phone or computer modem to a wall jack is not twisted pair. It is a side-by-side wire known as silver satin. The wall jack can have as many five kinds of hole arrangements or pinouts, depending on the kinds of wire the installation expects will be plugged in (for example, digital, analog, or LAN). (That's why you may sometimes find when you carry your notebook computer to another location that the wall jack connections won't match your plug.) Fiber Optic cable Fiber optic (or "optical fiber") refers to the medium and the technology...
Words: 1404 - Pages: 6
...CHAPTER 1 – Introduction To Networking • Connection to the internet can be broken down into: 1. Physical connection – to a network is made by inserting a specialised expansion card 2. Logical connection – uses standards called protocols. (TCP/IP) 3. Applications – the application that interprets the data & displays the information in an understandable format is the last part of the connection. (FTP) • When selecting a NIC for a network, consider the following: 1. Type of network 2. Type of medium 3. Type of system bus • TCP/IP – set of protocols or rules developed to allow co-operating computers to share resources across a network • Ping – a program that is useful for verifying a successful TCP/IP installation. The ping command works by sending internet Control Message Protocol (ICMP) datagram to request a reply • PCMCIA slots are slots used primary in Laptops for expansion cards CHAPTER 2 – Networking Fundamentals • There are 2 types of Networking Devices: 1. End User Devices – PC, Printer, MAC File Server, Laptop, IBM Mainframe 2. Network Devices – provides transport data between end user devices, Network Devices include Repeater, 10BASE-T-Hub, 100BASE-T-Hub, Hub, Bridge, Workgroup Switch, Router, Network Cloud • Repeaters – Layer 1, Physical Layer device. Similar to a hub. • Hubs – Layer 1, Physical Layer device. Used to regenerate & retime network...
Words: 4073 - Pages: 17
...NT1210 Introduction to Networking Unit 1: Mid-Term Mid Term Review 1 Nibble, Byte, Word, Double Word Nibble, Byte, Word, Double Word Figure 1-2 2 Kilobyte, Megabyte, Gigabyte, Terabyte Size (2N Bytes) Term Size (Bytes) Kilobyte Megabyte Gigabyte Terabyte 1024 1,048,576 1,073,741,824 1,099,511,627,776 Kilobyte, Megabyte, Gigabyte, Terabyte 210 220 230 240 Rounded by Size (Bytes) 1,000 1,000,000 1,000,000,000 1,000,000,000,000 Table 1-1 3 Random Access Memory (RAM) Physically exists as set of microchips installed on plastic card (memory module) Central Processing Unit (CPU) uses RAM like people g ( ) p p use notepad Stores binary value so can use it later Can read data from RAM to recall value stored earlier CPU sends electrical signal over bus (electrical pathway) to communicate with RAM 4 Random Access Memory (RAM) (cont.) RAM uses address for each unique memory location where byte can be stored To write to RAM: CPU sends signal to RAM over the bus g to write (store) value into byte of RAM Address in RAM Value to be written To read from RAM: CPU uses similar process (see example in Figure 1-3 on next slide) 5 CPU Reads Byte 4 from RAM The CPU uses the same bus to read the current value of a byte in RAM as it does to send a message to RAM. The read request lists the address of the particular byte, asking for its value. RAM returns the binary value stored at that address. CPU Reads Byte 4 from RAM 6 Figure 1-3 Writing Individual Bits in Byte 4 of RAM...
Words: 11596 - Pages: 47
...EEL201 Term Paper: Serial Communication Over Parallel 1 Serial Communication Over Parallel Sachin Garg Indian Institute of Technology, Delhi-110016 E-mail: ee2110527@ee.iitd.ac.in Abstract—Communication is the essence of today’s technologically advanced world. The two most basic methods of digital communication are: Serial and Parallel. Parallel communication involves multiple wires running parallel to each other and can transmit data on all the wires simultaneously. However, Serial communication requires a single wire for transferring data bits one at a time. A natural question arises out of human curiosity: which one of the two methods is better. This term paper discusses these two methods, their various applications and the advantages of the Serial Communication method over the Parallel one. Index Terms—Parallel Communication, Serial Communication UART, RS-232 DTE, Synchronous, Asynchronous. Parallel counterpart have been resolved. Although the Parallel Transmission Method is still used within internal buses and for devices such as printers, but the latest devices, ports and technologies are mostly based on Serial Techniques. For example - Universal Serial Bus and WAN, both make use of the Serial Type Data Transmission. II. TERMS USED IN DATA COMMUNICATION A. Transmission Distance The transmission distance of a communication signal is the length of path the signal travels as it goes from transmitter to the receiver. B. Data Terminal Equipment (DTE) Data Terminal...
Words: 2963 - Pages: 12
...Electronics FOR DUMmIES by Gordon McComb and Earl Boysen ‰ TEAM LinG - Live, Informative, Non-cost and Genuine ! Electronics For Dummies® Published by Wiley Publishing, Inc. 111 River Street Hoboken, NJ 07030-5774 Copyright © 2005 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, e-mail: brandreview@wiley.com. 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...
Words: 127080 - Pages: 509
...Recognized as an American National Standard (ANSI) IEEE Std 1284-1994 IEEE Standard Signaling Method for a Bidirectional Parallel Peripheral Interface for Personal Computers IEEE Computer Society .- Sponsored by the Microprocessor and Microcomputer Standards Committee h Published by the Institute of Electrical and Electronics Engineers, Inc., 345East 4Tth Street, New York, N y lwlz USA. lEEE December 2, 1994 SH 1 7335 Authorized licensed use limited to: UNIVERSITY OF VICTORIA. Downloaded on July 29,2010 at 20:21:17 UTC from IEEE Xplore. Restrictions apply. THIS PAGE WAS BLANK IN THE ORIGINAL Authorized licensed use limited to: UNIVERSITY OF VICTORIA. Downloaded on July 29,2010 at 20:21:17 UTC from IEEE Xplore. Restrictions apply. Recognized as an American National Standard (ANSI) IEEE Std 1284-1994 IEEE Standard Signaling Method for a Bidirectional Parallel Peripheral Interface for Personal Computers Sponsor Microprocessor and Microcomputer Standards Committee of the IEEE Computer Society Approved March 30, 1994 IEEE Standards Board Approved September 2, 1994 American National Standards Institute Abstract: A signaling method for asynchronous, fully interlocked, bidirectional parallel communications between hosts and printers or other peripherals is defined. A format for a peripheral identification string and a method of returning this string to the host outside of the bidirectionaldata stream is also specified...
Words: 34986 - Pages: 140
...Home Sign Up! Browse Community Submit All Art Craft Food Games Green Home Kids Life Music Offbeat Outdoors Pets Photo Ride Science Tech LED Cube 8x8x8 by chr on November 16, 2010 Table of Contents LED Cube 8x8x8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Intro: LED Cube 8x8x8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Step 1: Skills required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Step 2: Component list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . File Downloads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Step 3: Ordering components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....
Words: 21520 - Pages: 87
...Arduino Cookbook Arduino Cookbook Michael Margolis Beijing • Cambridge • Farnham • Köln • Sebastopol • Tokyo Arduino Cookbook by Michael Margolis Copyright © 2011 Michael Margolis and Nicholas Weldin. All rights reserved. Printed in the United States of America. Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472. O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions are also available for most titles (http://my.safaribooksonline.com). For more information, contact our corporate/institutional sales department: (800) 998-9938 or corporate@oreilly.com. Editors: Simon St. Laurent and Brian Jepson Production Editor: Teresa Elsey Copyeditor: Audrey Doyle Proofreader: Teresa Elsey Indexer: Lucie Haskins Cover Designer: Karen Montgomery Interior Designer: David Futato Illustrator: Robert Romano Printing History: March 2011: First Edition. Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc. Arduino Cookbook, the image of a toy rabbit, and related trade dress are trademarks of O’Reilly Media, Inc. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O’Reilly Media, Inc., was aware of a trademark claim, the designations have been printed in caps or initial caps. While every precaution...
Words: 90321 - Pages: 362
...of M t i c e Hall ComputerPublishing 11 711 Nonh College, Cmel, Indiana 46032 USA " 1974 by SAMS A Division of Prentice Hall Computer Publishing. All rights reserved. No parts of this book shall be reproduced, stored in a retrieval system, or transmitted by any means. electronic, mechanical, photocopying, recording, or otherwise, without written permission from the publisher. No patent liability is assumed with respect to the use of the information contained herein. While every precaution has been taken in the preparation of this book, the publisher assumes no responsibility for errors or omissions. Neither is any liability assumed for damages resulting from the use of the information contained herein. International Standard Book Number: 0-672-21035-5 Library of Congress Catalog Card Number: 73-90295 Interpretation of the printing code: the rightmost double-digit number of the first column is the year of the book's printing; the rightmost double-digit number of the second column, the number of the book's printing. For example, a printing code of 92-23 shows that the twenty-third printing of the book occurred in 1992. Printed in the United States of America. Preface I don't like to revise books. Correct, yes. Revise, no. So I won't. A book becomes history the instant it appears in print. To tamper with history messes with what others and I were thinking at the time and distorts the way things were, forcing new contexts. With the TTL Cookbook...
Words: 89774 - Pages: 360
...Powerware Series Eaton FERRUPS FE/QFE UPS User's Guide ® ® Class A EMC Statements FCC Part 15 NOTE This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. ICES-003 This Class A Interference Causing Equipment meets all requirements of the Canadian Interference Causing Equipment Regulations ICES‐003. Cet appareil numérique de la classe A respecte toutes les exigences du Reglement sur le matériel brouilleur du Canada. For Users in Germany We hereby certify that the uninterruptible power system (QFE 500 VA, 700 VA, 850 VA, 1.15 kVA, 1.4 kVA, 1.8 kVA, 2.1 kVA, 3.1 kVA, 4.3 kVA, 5.3 kVA, 7 kVA, 10 kVA, 12.5 kVA, and 18 kVA) complies with the RFI suppression requirements of Vfg. 243/1991 and Vfg. 46/1992. The German Postal Service was notified that the equipment is being marketed. The German Postal Service has the right to retest the equipment and verify compliance...
Words: 27086 - Pages: 109
...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...
Words: 139691 - Pages: 559
...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...
Words: 139691 - Pages: 559
...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...
Words: 64092 - Pages: 257
