802 (Plus de 4 000 résultats)

Paperback. Etat : As New.

Paperback. Etat : Very Good.

Etat : very_good. Cover may have light wear, pages in very good condition and binding is sturdy; may have other light shelf wear or creases. May have notes or highlighting.

Etat : like_new.

Hardback. Etat : Good. If you've been searching for a way to get up to speed quickly on IEEE 802.11n without having to wade through the entire standard, then look no further. This comprehensive overview describes the underlying principles, implementation details, and key enhancing features of 802.11n. A detailed discussion of the key throughput, robustness, and reliability enhancing features (such as MIMO, 40 MHz channels, and packet aggregation) is given, in addition to a clear summary of the issues surrounding legacy interoperability and coexistence. Advanced topics such as beamforming and fast link adaption are also covered. With numerous MAC and physical layer examples and simulation results included to highlight the benefits of the new features, this is an ideal reference for designers of WLAN equipment, and network managers whose systems adopt the new standard. It is also a useful distillation of 802.11n technology for graduate students and researchers in the field of wireless communication.…

Mass Market Paperback. Etat : Fair. The item might be beaten up but readable. May contain markings or highlighting, as well as stains, bent corners, or any other major defect, but the text is not obscured in any way.

Etat : acceptable. Readable copy. Pages may have considerable notes highlighting. May have varying covers. Fast Shipping - Mailed in plastic mailer.

Etat : good. Pages can have notes highlighting. Spine may show signs of wear. May have varying covers. Fast Shipping - Mailed in plastic mailer.

Etat : Good. CCNA® Exam CramThird Edition Michael ValentineAndrew Whitaker Exam 640-802 The Smart Way to Study? ?The CCNA exam is difficult and I would not have passed it if I did not have this book with me. The CCNA Exam Cram is an indispensable resource that guided me from the introduction of networking fundamentals to the application of networking theories. Whether you need to learn from scratch or just need a quick reference, this book is an excellent guide that will definitely reinforce your knowledge of Cisco networking and prepare you for the CCNA.?  ?Vincent Gov, CCNA In this book, you learn how to:Develop perfect fluency in subnetting Connect Cisco® equipment, make initial configurations, and connect to other devices to build a network Configure Cisco routers and back up and restore your Cisco IOS® Software configurations Explain the functions of Ethernet switching and the Spanning Tree Protocol (STP) Configure PPP and Frame Relay for WAN connectivity Understand and apply wireless LAN concepts Mitigate network security threats and secure network devices Build scalable routed systems using dynamic routing protocols including RIPv2, EIGRP, and OSPF Create VLANs and distribute VLAN information using the VLAN Trunking Protocol (VTP) Filter traffic from one network to another with access control lists (ACL) Understand and implement IPv6Deploy Network Address Translation (NAT) WRITTEN BY CCNA Experts!Mike Valentine has been in the IT field for 12 years, focusing on network design and implementation. He is currently a Cisco trainer with Skyline Advanced Technology Services and specializes in Cisco Unified Communications instruction as well as CCNA® and CCNP® courses. Andrew Whitaker is the director of enterprise InfoSec and networking and senior training instructor for Training Camp. He has achieved several Cisco certifications and has written on several Cisco topics. CD features new simulation questions!This book includes a CD-ROM that features:Complete coverage of CCNA exam objectives Realistic exam questions for effective practice Detailed explanations of correct and incorrect answers Multiple exam modes Flash Card formatAn electronic copy of the book.…

Etat : very_good. Fast Free Shipping â" Very Good condition book with a firm cover and clean pages. Shows normal use and some light wear or limited notes markings. A solid, nice copy to enjoy.

Etat : good. Fast Free Shipping â" Good condition. It may show normal signs of use, such as light writing, highlighting, or library markings, but all pages are intact and the book is fully readable. A solid, complete copy that's ready to enjoy.

Mass Market Paperback. Etat : Very Good. Harlequin Superromance #802. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Etat : Very Good. As a network administrator, architect, or security professional, you need to understand the capabilities, limitations, and risks associated with integrating wireless LAN technology into your current infrastructure. This guide offers the information needed to analyze and deploy wireless networks.…

Paperback. Etat : Good. As a network administrator, architect, or security professional, you need to understand the capabilities, limitations, and risks associated with integrating wireless LAN technology into your current infrastructure. This guide offers the information needed to analyze and deploy wireless networks.…

paperback. Etat : Very Good.

Etat : very_good. Fast & Free Shipping â" Very Good condition book with a firm cover and clean pages. Shows normal use and some light wear or limited notes markings. A solid, nice copy to enjoy.

Paperback. Etat : Very Good. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.

Paperback. Etat : Fair. 3rd. The item might be beaten up but readable. May contain markings or highlighting, as well as stains, bent corners, or any other major defect, but the text is not obscured in any way.

Etat : good. Gently used with minimal wear on the corners and cover. A few pages may contain light highlighting or writing, but the text remains fully legible. Dust jacket may be missing, and supplemental materials like CDs or codes may not be included. May be ex-library with library markings. Ships promptly.…

Hardcover. Etat : Very Good. Very Good large hardcover 9780071795128.

Etat : Good. IT technicians recognize this classic reference as the #1 resource and test preparation guide for CompTIA A+ certification-the Eighth Edition of Mike Meyers' bestseller covers the new 2012 exam topics and new performance-based exam questions.

Etat : Very Good. IT technicians recognize this classic reference as the #1 resource and test preparation guide for CompTIA A+ certification-the Eighth Edition of Mike Meyers' bestseller covers the new 2012 exam topics and new performance-based exam questions.

Paperback. Etat : Good. CompTIA Authorized, fully updated Study Guide for the leading IT certification: CompTIA A+ CompTIA A+ is the de facto certification for IT technicians. Some vendors even require employees to achieve certification as part of their job training. This book prepares you for both required exams: 220-801 and 220-802. Totally updated to cover the 2012 exams, this popular prep guide covers all the exam objectives. Readers will also have access to additional study tools, including the Sybex Test Engine with bonus practice exams, electronic flashcards, and a glossary of important terms in searchable PDF form. * Includes a coupon for 10% Off CompTIA Certification Exams * A complete study guide to both exams required for CompTIA A+ certification, the standard certification for software and hardware vendors and major technology companies * Covers personal computer components, laptops and portable devices, operating systems (including mobile), printers and scanners, networks, security, safety and environmental issues, communication, and professionalism * Provides clear and concise information on crucial hardware and operating system maintenance and troubleshooting topics * Offers practical examples, real-world insights, exam highlights, and end-of-chapter reviews CompTIA A+ Complete Study Guide prepares the diligent student to pass both parts of the A+ exam with confidence.…

Hardback. Etat : Good. Gain a practical understanding of the underlying concepts of the 802.11n standard and the methodologies for completing a successful wireless network installation Practical, start-to-finish guidance for successful deployment of 802.11n wireless LANs With the ratification of the 802.11n wireless LAN standard, thousands of companies are moving rapidly toward implementation. However, 802.11n is very different from legacy 802.11a, 802.11b, and 802.11g wireless standards, and successful deployment requires new knowledge and techniques. In this book, leading wireless expert Jim Geier systematically presents all the information and guidance that network architects, engineers, administrators, and managers need to maximize the performance and business value of new 802.11n networks. Drawing on extensive experience with real-world 802.11n deployments, Geier guides you through the entire project lifecycle: planning, design, installation, testing, monitoring, and support. Each phase of wireless LAN deployment is organized into clearly defined steps, and multiple case studies and hands-on exercises show how to apply each technique. You?ll find practical guidance for deploying in enterprises without existing wireless infrastructure, as well as migrating from legacy 802.11a, 802.11b, or 802.11g networks. For convenient reference, Geier also provides an extensive, up-to-date wireless networking glossary.  Jim Geier founded Wireless-Nets, Ltd., and serves as its principal consultant. His 25 years of experience include analysis, design, implementation, installation, and support of wireless network-based solutions for cities, enterprises, airports, manufacturers, warehouses, hospitals, and other facilities worldwide. He is author of more than a dozen books, including Wireless Networks - First Step and Deploying Voice over Wireless LANs (Cisco Press) and Implementing 802.1X Security Solutions. He has been active with the IEEE 802.11 Working Group developing international wireless LAN standards, and chaired the IEEE International Conference on Wireless LAN Implementation. Understanding 802.11n MAC, physical layer, and related standards Designing 802.11n wireless networks for diverse scenarios: considering architecture, range, performance, roaming, and RF issuesMigrating from 802.11a, 802.11b, and 802.11g wireless networks Choosing the right tools and equipment, and using them effectivelyPlanning effectively: scoping projects; creating work breakdown structures; organizing teams, schedules, and budgets; defining requirements, and more Securing WLANs via encryption, authentication, rogue access point detection, RF shielding, and policesPerforming site surveys and identifying optimum access point locationsInstalling and configuring wireless LANs: planning, staging, deployment, documentation, and moreSystematic testing to improve signal coverage, performance, and securityManaging wireless LANs: help desk support, network monitoring, maintenance, engineering, configuration management, security, tools, and moreTroubleshooting 802.11n networks: identifying issues with connectivity, performance, and more.…

Etat : Good. CCNA Practice QuestionsThird Edition Jeremy Cioara CCNA 640-802 The Smart Way to Study? Master Your Knowledge of the CCNA Exam! Simulations now included with MeasureUp?s innovative test engine for better preparation for the real exam. Features more than 300 questions organized according to the CCENT and CCNA exam objectives so you can easily assess your knowledge of each topic, no matter which exam you take. Each answer includes detailed explanations. Use our innovative Quick-Check Answer Key? to quickly find answers as you work your way through the questions. Our popular Cram Sheet, which includes tips, acronyms, and memory joggers, helps you review key facts before you enter the testing center. More than 300 Questions on CD!MeasureUp?s innovative test engine gives you an effective tool to assess your readiness for the exam, includingSimulation questions Multiple test modes Random questions and order of answers Coverage of each CCENT and CCNA exam objective WRITTEN BY A LEADING CCNA EXPERT:Jeremy Cioara (CCIE, CCVP, CCSP) works in many facets of the Cisco networking realm. He is an accomplished instructor, author, and consultant. Jeremy is the CIO of AdTEC Networks and works as a network consultant focusing on Cisco network and Voice over IP (VoIP) implementations. www.examcram.comISBN-13: 978-0-7897-3714-4ISBN-10: 0-7897-3714-0.…

paperback. Etat : Good. This is a used book in good condition and may show some signs of use or wear . This is a used book in good condition and may show some signs of use or wear .

Paperback. Etat : Good. This is a used book in good condition and may show some signs of use or wear . This is a used book in good condition and may show some signs of use or wear .

Etat : good. Fast Free Shipping â" Good condition. It may show normal signs of use, such as light writing, highlighting, or library markings, but all pages are intact and the book is fully readable. A solid, complete copy that's ready to enjoy.

paperback. Etat : Good. This is a used book in good condition and may show some signs of use or wear . This is a used book in good condition and may show some signs of use or wear .

Paperback. Etat : Very Good. 1. It's a well-cared-for item that has seen limited use. The item may show minor signs of wear. All the text is legible, with all pages included. It may have slight markings and/or highlighting.