... devices H c vi n m ng Bách khoa - Website: www.bkacad.com TransportLayer Role and Services • Explain the purpose of the Transportlayer • Enables multiple applications • • to communicate over ... "best effort" by this Transportlayer protocol H c vi n m ng Bách khoa - Website: www.bkacad.com 10 TCP Header format: H c vi n m ng Bách khoa - Website: www.bkacad.com 11 TCP Header format: Port ... www.bkacad.com 43 Labs H c vi n m ng Bách khoa - Website: www.bkacad.com 44 Summary H c vi n m ng Bách khoa - Website: www.bkacad.com 45 H c vi n m ng Bách khoa - Website: www.bkacad.com 46 ...
... 802 .11 b but with the bandwidth of 802 .11 a IEEE 802 .11 n - Is currently in draft form The proposed standard defines frequency of 2 .4 Ghz or GHz The typical expected data rates are 10 0 Mbps to 2 10 ... up to 54 • • • • • Mbps, small coverage area; less effective at penetrating building structures Not interoperable with the 802 .11 b and 802 .11 g standards IEEE 802 .11 b - Operates in the 2 .4 GHz ... speed up to 11 Mbps Longer range and better able to penetrate building structures than devices based on 802 .11 a IEEE 802 .11 g - Operates in the 2 .4 GHz frequency band, speed up to 54 Mbps Devices implementing...
... Website: www.bkacad.com 11 Network Layer Fields • bits • Indicates version of IP used • IPv4: 010 0; IPv6: 0110 H c vi n m ng Bách khoa - Website: www.bkacad.com 12 Network Layer Fields • • bits ... H c vi n m ng Bách khoa - Website: www.bkacad.com 10 IPv4 packet header • Identify the major header fields in the IPv4 protocol and describe each field's role in transporting packets H c vi n ... 5 .1. 1 ) H c vi n m ng Bách khoa - Website: www.bkacad.com Network Layer Protocols • Protocols implemented at the Network layer that carry user data include: – Internet Protocol version (IPv4)*...
... hệ thống tăng từ 10 % đến 90% giá trị xác lập Thời gian đỉnh (peak time) thời gian để đáp ứng hệ thống đạt giá trị đỉnh (giá trị lớn nhất) độ v t lố Độ v t lố lớn (maximum overshoot) giá trị ... sR( s ) ess = lim sE ( s ) = lim s 0 s 0 + G ( s) H ( s ) Nhận xét: Sai số xác lập không phụ thuộc v o cấu trúc thông số hệ thống mà phụ thuộc v o tín hiệu v o System and Control Ngo Quang Hieu ... xác lập (tín hiệu hồi tiếp) thời gian tiến đên v e(t ) = c (t ) − r (t ) ⇔ E ( s ) = C ( s ) − R ( s ) ⇒ ess = lim e(t ) = lim sE ( s ) t →∞ s 0 Biểu thức sai số xác lập Cho hệ thống có sơ...
... regional service, pay Teir -1 for connectivity Tier-3 providers: Provide service directly to end users, usually connected through Tier-2 providers 43 Quality of Service 44 Quality of Service 45 QoS ... easy to 10 Networks Supporting the Way We Live http://www.youtube.com/watch ?v= CQzUsTFqtW0 Today’s networks carry between many different types of devices: Voice video streams Text graphics 11 The ... physical limitations become less relevant 12 Networks are integral in our daily lives http://www.youtube.com/watch? v= fQKNvPn 3V8 &mode=related&search= 13 14 Examples of Today’s Popular Communication...
... states of the first 12 interfaces and ports of each switch Switch A Port # Switch B 10 11 12 2 -4 CCNA 3: Switching Basics and Intermediate Routing v 3 .0 - Lab 7.2.6 Copyright 200 3, Cisco Systems, ... privileged EXEC mode prompt Note: Type show spanning-tree brief if running version 12 .0 of the IOS If running version 12 .1 of the IOS, type just show spanning-tree Different versions of IOS have ... exit, and turn all the devices off Then remove and store the cables and adapter 4- 4 CCNA 3: Switching Basics and Intermediate Routing v 3 .0 - Lab 7.2.6 Copyright 200 3, Cisco Systems, Inc ...
... Overview • Describe how the functions of the three upper OSI model layers • • • • • • provide network services to end user applications Describe how the TCP/IP Application Layer protocols provide ... www.bkacad.com OSI model H c vi n m ng Bách khoa - Website: www.bkacad.com OSI model H c vi n m ng Bách khoa - Website: www.bkacad.com OSI and TCP/IP Model • Functionality of the TCP/IP application layer ... of the top three layers of the OSI model: Application, Presentation and Session layers H c vi n m ng Bách khoa - Website: www.bkacad.com OSI and TCP/IP Model • The Presentation layer has three...
... networks each have their own individual versions of the four basic network elements H c vi n m ng Bách khoa - Website: www.bkacad.com Converged Networks Converged networks • Technology advances are ... individuals, and to support education, science, and government Play video to watch how the Internet, and its underlying technology, brings opportunities to people wherever they live or work H c vi ... the Way We Live • Data networks that were once the transport of information from business to business have been repurposed to improve the quality of life for people everywhere H c vi n m ng Bách...
... SQL Server as far back as version SQL Server 200 0 up through SQL Server 200 8 Microsoft even supports SQL Server Compact Edition 12 CHAPTER ■■■ The Entity Data Model Chapter spent quite a bit ... database-first approach has been available since the very beginning of the EF with the release of NET 3.5 SP1 The model-first approach is new to Visual Studio 2 010 and NET 4.0 and allows you to create ... http://msftdbprodsamples.codeplex.com/Release/ProjectReleases.aspx?ReleaseId =18 40 7 So, let’s begin 13 CHAPTER ■ THE ENTITY DATA MODEL Taking a Database-First Approach Fire up Visual Studio 2 010 and create a new Windows Forms Application...