data link layer protocols pdf

... Data Link Layer Protocols- The Frame 31 • Remember that although there are many different Data Link layer protocols that describe Data Link layer frames, each frame ... logical signal paths are defined by Data Link layer protocols. • The Data Link layer "sees" the logical topology of a network when 24 • The Data Link layer "sees" the logical ... chapter, you will be able to: • Explain the role of Data Link layer protocols in data transmission. • Describe how the Data Link layer prepares data for transmission on network media. • Describe...

Ngày tải lên: 22/12/2013, 13:17

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Ngày tải lên: 16/02/2014, 20:20

Ngày tải lên: 21/06/2014, 22:20

... with other frames sent in [t 0 -1,t 0 +1] 5: DataLink Layer 5-2 Chapter 5: The Data Link Layer Our goals: ❒ understand principles behind data link layer services: ❍ error detection, correction ❍ sharing ... etc ❍ extracts datagram, passes to rcving node ❒ adapter is semi- autonomous ❒ link & physical layers sending node frame rcving node datagram frame adapter adapter link layer protocol 5: DataLink Layer ... channel: multiple access ❍ link layer addressing ❍ reliable data transfer, flow control: done! ❒ instantiation and implementation of various link layer technologies 5: DataLink Layer 5-49 Star topology ❒ Bus...

Ngày tải lên: 12/09/2012, 15:06

... + HF – (thoại tương tự) + VHF Data link: VDL Mode2 – (dữ liệu), VDL mode3 - (thoại và dữ liệu), và VDL mode4 - (dữ liệu). + SSR Mode S - (dữ liệu) + HF Data link – (dữ liệu). Các dịch vụ thông ... 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 ... phân lớp điều khiển truy nhập MAC ( Medium Access Control ), Dịch vụ liên kết dữ liệu DLS ( Data Link service ) và thực thể quản lý liên kết ( LME ). Lớp liên kết dữ liệu VDL cung cấp sự truyền...

Ngày tải lên: 22/11/2012, 09:13

Ngày tải lên: 23/08/2013, 10:37

Ngày tải lên: 29/09/2013, 20:20

... CHAPTER 8 ■ DATA ACCESS LAYER 174 private void DisconnectFromDatabase() { if (_databaseConnection.State != ConnectionState.Open) { _databaseConnection.Close(); } } private IDataReader ... CreateUserFromReader(IDataReader dataReader) { int id = dataReader.GetInt32(0); string name = dataReader.GetString(1); string emailAddress = dataReader.GetString(2); string password = dataReader.GetString(2); ... the project, only the parts of the database that are in use by the object model should have been generated. CHAPTER 8 ■ DATA ACCESS LAYER 164 DATABASE KEYS Database tables should always have...

Ngày tải lên: 03/10/2013, 01:20

... modules that focus on the data access layer (DAL). In Module 8, “The Nontransactional Data Access Layer, ” you learned about data retrieval. In this module, you will learn about data manipulation. ... same data access technologies as that of the nontransactional DAL. The following data access technologies were covered in Module 8, “The Nontransactional Data Access Layer : ! Microsoft Data ... DAL: Module 8, “The Nontransactional Data Access Layer and Module 9, “The Transactional Data Access Layer. ” The DAL is an application’s means of access to data services. After completing this...

Ngày tải lên: 05/11/2013, 12:15

Ngày tải lên: 10/12/2013, 03:15

Ngày tải lên: 12/12/2013, 09:15

... Nontransactional Data Access Layer 15 Data Shaping Service ! Relation-based Hierarchical Rowsets ! Group-based Hierarchies ! Using Data Shaping ! Sample Definition OLE DB provides a Data Shaping ... is any component that owns data. It exposes its data in a tabular format, regardless of the format in which it stores data. Examples of data providers are relational database management systems ... 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....

Ngày tải lên: 21/12/2013, 06:17

... 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 ...

Ngày tải lên: 23/12/2013, 03:17

... same data access technologies as that of the nontransactional DAL. The following data access technologies were covered in Module 8, “The Nontransactional Data Access Layer : ! Microsoft Data ... DAL. Module 9: The Transactional Data Access Layer 3 The Business Problem DAL Connected Business Logic Layer Disconnected Business Logic Layer Facade Layer Web Services Facade Business ... data services layer. The transactional DAL can return to the business logic layer either success or failure. If the transaction also involved retrieving data as a result of updates to the data, ...

Ngày tải lên: 17/01/2014, 09:20

... 10.3.1.254 255.255.255.0 Router(config-subif)#encapsulation isl 3 Part 2: Multi -Layer Switching Goals Configure Multi -layer Switching on the router, Switch A, and Switch B. Ping between PC-2 and ... Multi -layer Switching by Dan Farkas Introduction Equipment Initial Configuration Part 1: Inter-VLAN Routing Goals Task List Solutions - Part 1 Answers Configurations Part 2: Multi -Layer ... This lab has two parts. In the first part, a link is configured as an ISL trunk and then inter-VLAN routing is configured. In the second part, Multi -layer Switching is configured and an access...

Ngày tải lên: 18/01/2014, 04:20

... the link- state type, the ID of the advertising router, the cost of the advertised link, and the sequence number of the link. This is different from distance vector protocols. Distance vector protocols ... OSPF router ID Seq: Sequence number T: OSPF packet type (1-hello, 2 -data description, 3 -link state request, 4 -link state update, 5 -link state acknowledgment V: OSPF version number TABLE 11-2 Field ... printer profile Composite Default screen The show ip protocols Command You can use the show ip protocols command to display the IP routing protocols that have been configured and are running on...

Ngày tải lên: 18/01/2014, 04:20

... System Preferences, and indicate which folder contains the files to be shared. 6.2. Exchanging Data with Other Macs Considering how many ways there are to move files back and forth between Macs, ... carry it to the other machine. You'd use this approach when, for example, you have a lot of data to copy, but the two Macs aren't within networking range; for example, they're not ... external hard drive for another. This is by far the fastest method yet for transferring a lot of data even faster than copying files over a network. It's extremely useful in any of these...

Ngày tải lên: 21/01/2014, 04:20