data communication and networking forouzan ppt free

... network : Routers Trang 9Kết nối giữa các network9 19/09/2016 Trang 10Network layer Data Link layerNetwork layer Data Link layer Trang 11Kết nối giữa các network• Router là thiết bị kết nối institutional ... trung gian (hay next-hop), dùng ARP để tìm MAC của máy đích , sau đó chuyển gói tin xuống tầng datalink • Indirect delivery : khi địa chỉ đích là khác mạng với packet => phải chuyển packet

Ngày tải lên: 21/07/2022, 15:45

... Headers and trailers are control data added at the beginning and the end of each data unit at each layer of the sender and removed at the corresponding layers of thereceiver They provide source and ... layer b Error correction and retransmission: data link and transport layers Trang 7d Responsibility for carrying frames between adjacent nodes: data link layer19 a Format and code conversion services: ... presentation layer b Establishing, managing, and terminating sessions: session layer c Ensuring reliable transmission of data: data link and transport layers d Log-in and log-out procedures: session layer

Ngày tải lên: 12/04/2023, 21:01

... Trang 1DATA COMMUNICATIONSAND NETWORKING Second Edition FM Page i Wednesday, February 23, 2000 2:30 PM Trang 2FM Page ii Wednesday, February 23, 2000 2:30 PMTrang 3DATA COMMUNICATIONSAND NETWORKING ... Choice 60 Exercises 63 Chapter 4 Signals 65 4.1 ANALOG AND DIGITAL 65 Analog and Digital Data 66 Analog and Digital Signals 66 4.2 APERIODIC AND PERIODIC SIGNALS 66 Periodic Signals 67 Aperiodic ... Supplementary Services 472 16.2 HISTORY 472 Voice Communication over Analog Networks 472 Voice and Data Communication over Analog Networks 472 Analog and Digital Services to Subscribers 473 Integrated

Ngày tải lên: 24/10/2017, 13:15

... construction, and their application to a variety of data mining and database problems This chapter is organized as follows In the next section, we will discuss the sampling method and its application ... to perform on the database D For example f (V) may represent the mean or sum of one of the attributes in database D We note that a random sample S from database V defines a random variable f (S) ... pseudorandom generators, embeddings and data stream computation In Proc of the 2000 Annual IEEE Symp on Foundations of Computer Science, pages 189-1 97,2000 [16] J Kang, J F Naughton, and S Viglas

Ngày tải lên: 15/12/2013, 13:15

... this watermark DATA STREAMS: MODELS AND ALGORITHMS t... Management of Data [I 61 Deshpande A., Guestrin C., Madden S R., Hellerstein J M and Hong W (2004) Model-Driven Data Acquisition ... distributed data streams In ACM SIGMOD '03 International Conference on Management o Data, 2003 f [24] J Widom and R Motwani Query processing, resource management, and approximation in a data ... [7,38]), data from GPS enabled devices such as cars and phones and surveillance data are further examples Surveillance systems may include sophisticated sensors equipped with cameras and

Ngày tải lên: 15/12/2013, 13:15

... Trang 1M^HELYTANULMÁNYOK DISCUSSION PAPERS MT-DP – 2006/15 Central Bank Interventions, Communication and Interest Rate Policy in Emerging European Economies BALÁZS ÉGERT Trang 2Discussion ... published in this series may be subject to further publication Central Bank Interventions, Communication and Interest Rate Policy in Emerging European Economies Balázs Égert, Oesterreichische Nationalbank; ... Economics, Hungarian Academy of Sciences KTI/IE Discussion Papers are circulated to promote discussion and provoke comments Any references to discussion papers should clearly state that the paper is

Ngày tải lên: 15/03/2014, 14:20

... Specific textual and pictorial health warnings for men and for women should reflect sex and gendered effects and patterns of tobacco uptake and cessation 1.5 Increase availability and access to ... secondhand smoke, such as their children, spouses and other relatives at home and their co-workers in the workplace Exposure to secondhand tobacco smoke causes serious and fatal diseases in adults and ... into account the specific characteristics and needs of women and girls, men and boys? This policy brief, aimed at national and international policy-makers and nongovernmental organizations, shows

Ngày tải lên: 22/03/2014, 11:20

... that these data and. .. oil and gas companies, travel and entertainment companies, utility companies, real estate firms, government entities, and smaller retailers ing loans and any evidence ... the contents and scope of the data in the sample. A close examina- tion of the data reveals that the information is not complete in all regards and at times contains dupli- cations and ambiguities. ... An Overview of Consumer Data and Credit Reporting. Robert B. Avery, Paul S. Calem, and Glenn B. Can- ner, of the Board's Division of Research and Statis- tics, and Raphael W. Bostic, of

Ngày tải lên: 22/03/2014, 18:20

... process Political communication: the doub1e absence To understand the process of political communication we need to draw on the insights of both policy analysis and of media and communication rese訂'ch.Unfortunate1y ... England,J Scotland and Wales J r'lf) 咱 3 2γyι~-' 、 41 Trang 2542 Taxation and Representation: The Media, Poli位叫Communi阻tionand the Poll Ti揖 h 也efinal two ye盯'Sbetween the announcement and ... 仰argaretThatcher] got chucked out …Ithink [John Major] was weak, and that he did too much to-ing and fro-ing andshill抖ngand shallying and this and that, but having said that, it was really, yes he' s

Ngày tải lên: 30/03/2014, 11:20

... relay and destination as y = E h x n+ , and y S D, = E h x n S S D, + S D, (6) where h S r, and h S D, are the channel gains between the source and the relay and destination, respectively, and ... narrow band interference The price paid for OFDM’s attractive features in equalization, decoding, and possibly adaptive power and bandwidth allocation is its sensitivity to subcarrier drifts and ... 1): 1–8 Trang 3OFDM Communications with Cooperative Relays H Lu1, H Nikookar1 and T Xu2 1International Research Centre for Telecommunications and Radar (IRCTR) 2Circuits and Systems Group (CAS)

Ngày tải lên: 20/06/2014, 11:20

... having a mean µ and a standard deviation Σ Table 3 shows that the different states of the Markov chain depend on the elevation angles and that each state has its specified mean and standard deviation ... Land Mobile Radio Communications, Commission of European Communities, Directorate General, Telecommunications Information Industries and Innovation, Luxemburg Khalighi M A., Hélard J.-F., and ... propagation data at L-band (1542 MHz) for mobile satellite communications, Proc of IEEE Vehicular Technology Conference, pp 51-56, ISSN: 1090-3038, May 1991, Saint Louis, USA Trang 7fractional bandwidth

Ngày tải lên: 21/06/2014, 01:20

... one is the data replacement, and the other is the data retrieval. 4.1. Data Replacement. When a new data segment c j is successfully received by a node, the node will perform the data replacement ... Communications and Networking 7 between two combined data segments is greater than 2 √ N, then the node just needs to obtain one combined data segment that can fit in thegap from other node. And ... largely inherits the power of network coding, and yet well matches the demands EURASIP Journal on Wireless Communications and Networking 9 from continuous data management. While the cardinality- maximized

Ngày tải lên: 21/06/2014, 17:20

... signal processing Because the analog image data from a sensor is always converted into digital form for further handling and storage, also the data communication with an external motion estimation ... shift circuitry, together with some other cell and system level optimizations , reduces silicon area and array layout complexity, enabling faster and more efficient parallel full search motion estimation ... implementation is also heavily dependent on the speed of data transfer between the imager and the motion estimation processor, which means that the communication scheme should be carefully designed

Ngày tải lên: 21/06/2014, 22:20

... ■ DATA ACCESS AND NETWORKING 147 < ;data: DataGrid x:Name="grdData" Margin="15" AutoGenerateColumns="False"> < ;data: DataGrid.Columns> < ;data: DataGridTemplateColumn ... “Silverlight-enabled WCF Service” and name it StartingHandService.svc, as shown in Figure 6-4. Then click the Add button. CHAPTER 6 ■ DATA ACCESS AND NETWORKING 149 EventHandler<GetHandsCompletedEventArgs>(service_GetHandsCompleted); ... public static List<StartingHands> GetHands() { List<StartingHands> hands = new List<StartingHands>(); hands.Add( new StartingHands() { Nickname = "Big...

Ngày tải lên: 05/10/2013, 03:20

... PatchMate ™ EIA-232/V.24 has been a long standing electrical and mechanical data communication interface standard. EIA-232/V.24 defines the narrowband, serial binary data communications channel used between ... Modules Each standard module contains three front panel jacks for easy passive and/ or intrusive access to the circuit and two rear connectors for attachment to data terminating and/ or communication ... A and B available ã Balanced patch cords PMPC-B-X (Key Type B) and PMP-6XX002 (Key Type A) are used ã Modules and patch cords are red (Key Type A) and/ or black (Key Type B) 31 12/02 ã 517 Data...

Ngày tải lên: 10/12/2013, 17:15

... ANOTHER 8 CLOSING A DATA FILE 8 KEEPING DATA FILES COMPRESSED 9 SERIES 3C AND SIENA DATA FILES AND THE DATA APPLICATION 9 SERIES 5 DATABASE HANDLING 11 THE SERIES 5 DATABASE MODEL 12 DATABASES, TABLES, ... document. SERIES 3C AND SIENA DATA FILES AND THE DATA APPLICATION The files you use with the Data application (listed under the Data icon in the System screen) often called databases or database files ... of new and changed database commands and ‘Database OPX’ in the ‘OPX.pdf’ document. OPL SERIES 5 DATABASE HANDLING 14 RECORD POSITION In the DBMS model, as with most modern relational database...

Ngày tải lên: 19/02/2014, 12:20