data link layer protocols in data transmission

Tài liệu Module 7- Data Link Layer CCNA Exploration 4.0 pptx

Tài liệu Module 7- Data Link Layer CCNA Exploration 4.0 pptx

Ngày tải lên : 22/12/2013, 13:17
... chapter, you will be able to: ã Explain the role of Data Link layer protocols in data transmission. ã Describe how the Data Link layer prepares data for transmission on network media. ã Describe ... Data Link Layer Protocols- The Frame 31 ã Remember that although there are many different Data Link layer protocols that describe Data Link layer frames, each frame ... very simple. ã In point-to-point networks, if data can only flow in one direction at a time, it is operating as a half-duplex link. If data can successfully flow across the link from each node...
  • 64
  • 507
  • 0
ứng dụng của vhf data link mode 4 trong môi trường cns atm

ứng dụng của vhf data link mode 4 trong môi trường cns atm

Ngày tải lên : 22/11/2012, 09:13
... VHF Digital Link Thuật ngữ VHF Digital Link được đề ra bởi hiệp hội thông tin di động hàng không ICAO (AMCP) vào cuộc họp đầu tiên tháng 10 năm 1991, với những hệ thống thông tin liên lạc số ... trên vùng lãnh thổ Việt Nam. Luận văn “ ỨNG DỤNG CỦA VHF DATA LINK MODE 4 TRONG MÔI TRƯỜNG CNS/ ATM ” nghiên cứu công nghệ kỹ thuật VHF Data Link Mode 4, một liên kết dữ liệu số sử dụng sóng VHF ... (thoại và dữ liệu), và VDL mode4 - (dữ liệu). + SSR Mode S - (dữ liệu) + HF Data link – (dữ liệu). Các dịch vụ thông tin cho phép các mạng dữ liệu điện tử hàng không, liên lạc không/địa và địa/địa...
  • 124
  • 1.2K
  • 29
Data Access Layer

Data Access Layer

Ngày tải lên : 03/10/2013, 01:20
... remove existing records. The DataReader class will be examined to retrieve the correct data into newly instantiated User objects in each of the Find* methods. Listing 8–3. Database Interaction ... UserMapper(string connectionString) { _connectionString = connectionString; } private string _connectionString; private IDbConnection _databaseConnection; private bool ConnectToDatabase(string ... using either the LINQ query syntax or the built -in IEnumerable extension methods (see Listing 8–5). Listing 8–5. Access a User by Name Using Both Syntaxes DataContext dataContext = new DataContext(connection);...
  • 22
  • 464
  • 0
Module 9: The Transactional Data Access Layer

Module 9: The Transactional Data Access Layer

Ngày tải lên : 05/11/2013, 12:15
... Editing Manager: Lynette Skinner Editor: Mick Alberts, Jennifer Linn Production Manager: Miracle Davis Print Coordinators: Linda Lu Cannon (Write Stuff), Marlene Lambert (Online Training Solutions, ... define how CRM is used in the physical design. Lead -in In this topic, you will learn how and when to include CRM in your physical design. Module 9: The Transactional Data Access Layer ... Purchasing, as shown in the preceding slide, incorporates several principles: ! The Iterator design pattern is used to represent data sets. ! There is one design class for each entity in the database....
  • 34
  • 428
  • 0
Tài liệu Module 8: The Nontransactional Data Access Layer doc

Tài liệu Module 8: The Nontransactional Data Access Layer doc

Ngày tải lên : 21/12/2013, 06:17
... Editing Manager: Lynette Skinner Editor: Mick Alberts, Jennifer Linn Production Manager: Miracle Davis Print Coordinators: Linda Lu Cannon (Write Stuff), Marlene Lambert (Online Training Solutions, ... Nontransactional Data Access Layer # ## # Introduction to the Data Access Layer ! The Business Problem ! Splitting the DAL The DAL buffers the entire system from the underlying data services. ... to data services for creating, updating, or deleting is accomplished through the DAL. In this section, the DAL is introduced and discussed in the context of the business problem for accessing...
  • 62
  • 362
  • 0
Tài liệu Phần cứng (Lớp Physical, Data Link) : Đèn liên kết(Link ) của card mạng không sáng ppt

Tài liệu Phần cứng (Lớp Physical, Data Link) : Đèn liên kết(Link ) của card mạng không sáng ppt

Ngày tải lên : 23/12/2013, 03:17
... trường hợp về sự cố mạng có thể do phần cứng hay phần mềm: Phần cứng (Lớp Physical, Data Link) : Đèn liên kết (Link ) của card mạng không sáng Kiểm tra đầu nối card mạng và đầu cáp nối trên HUB/SWITCH ... tra kết nối vật lý – Click nút Start -> Run -> gõ lệnh cmd cửa sổ command line hiện ra -> gõ lệnh ping đến địa chỉ IP của Default gateway mạng đơn vị mình ( Default gateway mạng 172.28.x.0 ... là 172.28.111.1 – Nếu thành công qua bước 2. – Nếu không thành công : + Xem xét lại thông tin cấu hình mạng đã đúng chưa. Nếu sai thì thay đổi lại cho đúng và thử lại bước 1. ...
  • 2
  • 528
  • 0
Tài liệu Supporting Configurable Congestion Control in Data Transport Services ppt

Tài liệu Supporting Configurable Congestion Control in Data Transport Services ppt

Ngày tải lên : 15/01/2014, 15:59
... Configurable Congestion Control in Data Transport Services Yunhong Gu and Robert L. Grossman Laboratory for Advanced Computing National Center for Data Mining University of Illinois at Chicago November ... Work  Keep improving  More built -in congestion control package  More configuration abilities (e.g., data reliability and timeliness) 1 :: 23 udt.sourceforge.net Supporting Configurable Congestion ... :: 23 udt.sourceforge.net Similarity and Overhead  CTCP vs. Linux TCP  Aggregate throughput  Jain’s fairness index  Stability index (standard deviation) Flow # Throughput Fairness Stability TCP...
  • 23
  • 461
  • 0
Tài liệu Module 9: The Transactional Data Access Layer pptx

Tài liệu Module 9: The Transactional Data Access Layer pptx

Ngày tải lên : 17/01/2014, 09:20
... Purchasing transactional DAL. Module 9: The Transactional Data Access Layer 3 The Business Problem DAL Connected Business Logic Layer Disconnected Business Logic Layer Facade Layer Web ... Editing Manager: Lynette Skinner Editor: Mick Alberts, Jennifer Linn Production Manager: Miracle Davis Print Coordinators: Linda Lu Cannon (Write Stuff), Marlene Lambert (Online Training Solutions, ... define how CRM is used in the physical design. Lead -in In this topic, you will learn how and when to include CRM in your physical design. 28 Module 9: The Transactional Data Access Layer...
  • 34
  • 324
  • 0
Tài liệu Determining the Differences in Data Between Two DataSet Objects doc

Tài liệu Determining the Differences in Data Between Two DataSet Objects doc

Ngày tải lên : 21/01/2014, 11:20
... added to the DataSet containing the differences between the two DataSet objects. The process of modifying the data in the copy of the first table to match the data in second table involves several ... appears only in the current data section of the DiffGram. Row is in both DataSet 1 and DataSet 2 but the rows do not contain the same data Row data appears in the current data section of ... Recipe 3.3 Determining the Differences in Data Between Two DataSet Objects Problem You have two DataSet objects with the same schema but containing different data and need to determine the difference...
  • 6
  • 361
  • 0
Tài liệu Using the Data Link Properties Dialog Box ppt

Tài liệu Using the Data Link Properties Dialog Box ppt

Ngày tải lên : 26/01/2014, 10:20
... from the COM tab in Visual Studio .NET's Add Reference Dialog. The sample code contains a single event handler: Data Link Dialog Button.Click Creates and displays a Data Link Properties ... Recipe 1.13 Using the Data Link Properties Dialog Box Problem You want to display the Data Link Properties dialog b ox from an application so that users can create their own database connections ... they can from the Server Explorer window in the Visual Studio .NET IDE. Solution Use COM interop with the OLE DB Service Component to display the Data Link Properties dialog box. You'll...
  • 2
  • 377
  • 0
Tài liệu Chapter 7 :Data Link Control ppt

Tài liệu Chapter 7 :Data Link Control ppt

Ngày tải lên : 16/02/2014, 08:20
... Balanced (LAPB)  Part of X.25 (ITU-T)  Subset of HDLC - ABM  Point to point link between system and packet switching network node  Link Access Procedure, D-Channel  ISDN (ITU-D)  ABM  Always ... - Diagram Flow Control  Ensuring the sending entity does not overwhelm the receiving entity  Preventing buffer overflow  Transmission time  Time taken to emit all bits into medium  Propagation ... i  Transmitter goes back to frame i and retransmits William Stallings Data and Computer Communications Chapter 7 Data Link Control Cyclic Redundancy Check  For a block of k bits transmitter...
  • 51
  • 851
  • 1
Tài liệu Chapter 11 Data Link Control pdf

Tài liệu Chapter 11 Data Link Control pdf

Ngày tải lên : 16/02/2014, 20:20
... 3. 11.2 11-1 FRAMING 11-1 FRAMING The data link layer needs to pack bits into The data link layer needs to pack bits into frames frames , so , so that each frame is distinguishable from another. ... 11.40 The send window is an abstract concept defining an imaginary box of size 2 m − 1 with three variables: S f , S n , and S size . Note 11.4 Figure 11.2 Byte stuffing and unstuffing 11.31 Algorithm ... frame is distinguishable from another. Our postal system practices a type of framing. The simple postal system practices a type of framing. The simple act of inserting a letter into an envelope...
  • 103
  • 1.2K
  • 5
Tài liệu The top ten algorithms in data mining docx

Tài liệu The top ten algorithms in data mining docx

Ngày tải lên : 17/02/2014, 01:20
... clustering, statistical learning, association analysis, andlinkmining,whichareallamongthemostimportanttopicsindataminingresearch and development, as well as for curriculum design for related data mining, ... representatives are initialized by picking k points in  d . Techniques for selecting these initial seeds include sampling at random from the dataset, setting them as the solution of clustering a small ... and Windy (binary), and the class is the Boolean PlayGolf? class variable. All of the data in Figure 1.1 constitutes “training data, ” so that the intent is to learn a mapping using this dataset...
  • 206
  • 947
  • 1
Chapter 12 :Congestion in Data Networks pdf

Chapter 12 :Congestion in Data Networks pdf

Ngày tải lên : 06/03/2014, 09:21
... William Stallings Data and Computer Communications Chapter 12 Congestion in Data Networks Allocating VCCs within VPC  All VCCs within VPC should experience similar network ... Feedback  EFCI (Explicit forward congestion indication) marking  Relative rate marking  Explicit rate marking Traffic and Congestion Control Framework  ATM layer traffic and congestion control ... restraint so end systems transmit as fast as possible  Committed information rate (CIR)  Data in excess of this liable to discard  Not guaranteed  Aggregate CIR should not exceed physical data...
  • 45
  • 653
  • 1
KIDS COUNT  data book state trends in child well-being 2012 pdf

KIDS COUNT  data book state trends in child well-being 2012 pdf

Ngày tải lên : 07/03/2014, 04:20
... place in the rankings as they did last year. Note that data for indica- tors included in the previous index but not in the new one are still available at the KIDS COUNT Data Center (datacenter. kidscount.org). ... are not collected in a suciently comparable form for inclusion in the index. Six of the 10 indicators from last year’s KIDS COUNT Data Book are included in the new index. Two others—the ... state rankings for 2012 (using the new index) and for 2011 (using the previous index) is quite high (0.9). In other words, despite changes in the index, most states ended up in roughly...
  • 60
  • 300
  • 0

Xem thêm