In Vietnam, the concept of information technology are understood and defined in the Government Resolution No.49-CP signed on 04/08/1993: "Information Technology is a collection of scientific methods, and mediamodern technical tools - mainly computer technology and telecommunications - to exploit and effectively use information resources are plentiful and potential in all areas of human activity andsocial

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All rights reserved. No part of this book may be reproduced, stored in a retrieval system or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embodied in critical articles or reviews. The author and publisher have made every effort in the preparation of this book to ensure the accuracy of the information. However, the information contained in this book is...

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Javascript là một ngôn ngữ thông dịch (interpreter), chương trình nguồn của nó được nhúng (embedded) hoặc tích hợp (integated) vào tập tin HTML chuẩn. Khi file được load trong Browser (có support cho JavaScript), Browser sẽ thông dịch các Script và thực hiện các công việc xác định. Chương trình nguồn JavaScript được thông dịch trong trang HTML sau khi toàn bộ trang được...

 41 p hcmutrans 17/11/2012 600 17 Download

No part of this work may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying, recording, or by any information storage or retrieval system, without the prior written permission of the copyright owner and the publisher. ISBN-13 (pbk): 978-1-59059-943-3 ISBN-10 (pbk): 1-59059-943-8 ISBN-13 (electronic): 978-1-4302-0550-0 ISBN-10 (electronic): 1-4302-0550-4 Printed and bound in the United...

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Different programming languages ​​support different programming style (also known as the method of programming).Part of the programming task is the selection of one of the most suitable language for the problem to be solved. Different programming languages ​​require the programmer to handle the details at different levels of the installation algorithms. Often, this leads to favorable compromise between the programmer and the...

 745 p hcmutrans 17/11/2012 401 3 Download

Survivable Network Design • Spare Capacity Allocation (SCA) Problem: – given working paths and network (or virtual network) topology – provision spare capacity and find backup routes for fault tolerance – Goal: minimum spare capacity or cost • Survivable Mesh Networks – Consider preplanned protection in mesh networks • STM - DCS, ATM - VP, WDM, MPLS, etc.. – determine routing/capacity allocation for normal demand – find...

 23 p hcmutrans 01/09/2012 473 8 Download

Motivation • Communications networks need to be survivable? • Communication Networks are Critical Infrastructure (CI) (PCCIP 1996) the systems, assets and services upon which society and the economy depend • Communication infrastructure often considered most important CI due to reliance on it by other infrastructures – banking and finance, government services – power grid SCADA, etc. • Increasing Impact and Rate of Failures –...

 26 p hcmutrans 01/09/2012 401 2 Download

WAN Network Design •Design Variables • Network Topology (possibly facility location as well) • Channel Capacity • Routing Policy •Performance Metrics depends on network application and layer • Circuit Switched Network •Call Blocking, Availability • Packet network • Delay • Delay Jitter • Throughput • Packet Loss Basic WAN Network Design • Minimize total cost • Subject to Constraints … for example –...

 40 p hcmutrans 01/09/2012 451 1 Download

WAN Network Design •Design Variables • Network Topology (possibly facility location as well) • Channel Capacity • Routing Policy •Performance Metrics depends on network application and layer • Circuit Switched Network •Call Blocking, Availability • Packet network • Delay • Delay Jitter • Throughput • Packet Loss Basic WAN Network Design • Minimize total cost • Subject to Constraints … for example –...

 19 p hcmutrans 01/09/2012 456 1 Download

WAN Network Design •Design Variables • Network Topology (possibly facility location as well) • Channel Capacity • Routing Policy •Performance Metrics depends on network application and layer • Circuit Switched Network •Call Blocking, Availability • Packet network • Delay • Delay Jitter • Throughput • Packet Loss Basic WAN Network Design • Minimize total cost • Subject to Constraints … for example –...

 32 p hcmutrans 01/09/2012 539 3 Download

Wireless Networks • Proliferation of wireless technology and increasing popularity • Why Wireless in Access Networks? – Provide Mobility • WLAN in a building, campus environment, hotel, hospital, etc Wireless in Access Networks • Increasing use of wireless technology in access networks – IEEE 802.11 technology for Wireless LANS – WiMAX for last mile – Free Space Optical for short line of sight high bandwidth connections...

 11 p hcmutrans 01/09/2012 551 3 Download

Wireless Networks • Proliferation of wireless technology and increasing popularity • Why Wireless in Access Networks? – Provide Mobility • WLAN in a building, campus environment, hotel, hospital, etc Wireless in Access Networks • Increasing use of wireless technology in access networks – IEEE 802.11 technology for Wireless LANS – WiMAX for last mile – Free Space Optical for short line of sight high bandwidth connections...

 27 p hcmutrans 01/09/2012 481 3 Download