Data Access Layer

Bài giảng Lập trình quản lý - Chương 2: Mô hình 3-Layer. Chương này cung cấp cho học viên những nội dung về: mô hình 3-layer; GUI/presentation layer; business logic layer; data access layer; data transfer object (DTO);... Mời các bạn cùng tham khảo chi tiết nội dung bài giảng!

13p chutieubang 06-12-2022 15 3   Download

Bài giảng Mạng máy tính: Chương 5 Giao thức tầng liên kết dữ liệu cung cấp cho người học những kiến thức như: Introduction and services; Error detection and correction; Multiple access protocols & LAN; Link layer addressing &ARP; Specific link layer technologies.

46p elysale 17-06-2021 24 4   Download

Bài giảng "Mạng máy tính - Chương 5: Giao thức tầng liên kiết dữ liệu (data link)" cung cấp cho người học các kiến thức về: Error detection and correction, multiple access protocols & LAN, link-layer addressing & ARP. Mời các bạn cùng tham khảo.

45p nguoibakhong02 19-03-2018 59 6   Download

Chapter 5 - LAN architecture. After studying this chapter you will be able to: Identify the seven protocol layers of the Open System Interconnection (OSI) Reference Model, discuss the functional attributes of each layer of the Open Systems Interconnection Reference Model, understanding Putting Data on the Cable and Access Methods.

38p nhanmotchut_3 20-10-2016 32 2   Download

The Hypertext Transfer Protocol (HTTP) is a protocol used mainly to access data on the World Wide Web. HTTP functions like a combination of FTP and SMTP. This chapter provides knowledge of Hypertext Transfer Protocol (HTTP): HTTP transaction, request message, response message, header, examples, some other features.

25p tangtuy09 26-04-2016 47 3   Download

Upon completion of this 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 the different types of media access control methods,... Inviting you to refer.

96p youcanletgo_01 04-01-2016 64 5   Download

In chapter 4, students will be able to: Explain how physical layer protocols and services support communications across data networks, build a simple network using the appropriate, explain the role of the data link layer in supporting communications across data networks, compare media access control techniques and logical topologies used in networks.

66p youcanletgo_01 29-12-2015 69 4   Download

Bài giảng Mạng máy tính - Chương 5a cung cấp những nội dung kiến thức về Data Link Layer. Chương này gồm có các nội dung kiến thức sau: Introduction and services, error detection and correction, multiple access protocols & LAN, Link-layer addressing & ARP. Mời mọi người cùng tham khảo.

45p kiepnaybinhyen_01 27-11-2015 67 6   Download

The Data-over-Cable Service Interface Specification (DOCSIS)is an international standard developed by CableLabs, a non-profit research and development consortium for cable-related technologies. • DOCSIS specifies the OSI Layer 1 and Layer 2 requirements: Physical layer-For data signals that the cable operator can use, DOCSIS specifies the channel widths (bandwidths of each channel) as 200 kHz, 400 kHz, 800 kHz, 1.6 MHz, 3.2 MHz, and 6.4 MHz. DOCSIS also specifies modulation techniques (the way to use the RF signal to convey digital data).

47p mrdvad11 12-03-2013 136 54   Download

Radio based communication, open air The attacker, having a radio transmitter and receiver with the same radio frequency of the underlying wireless network, can easily: Intercept wireless data Connect his computing devices to a nearby wireless network Inject new packets to an existing wireless network Jam a particular wireless channel using a jamming device Security measures Implement encryption algorithms, authentication algorithms, and integrity-check algorithms at the data-link layer Provide network access with wired equivalent privacy Higher-layer protocols and applications can be used ...

32p muathu_102 28-01-2013 54 5   Download

The data link layer needs to pack bits into frames, so that each frame is distinguishable from another. Our postal system practices a type of framing. The simple act of inserting a letter into an envelope separates one piece of information from another; the envelope serves as the delimiter.

103p trada85 22-01-2013 75 9   Download

Ngày nay với sự phát triển của công nghệ,một ứng dụng có thể được tách thành nhiều phần (layer) và chúng được chạy ở trên nhiều máy tính khác nhau,chẳng hạn như: tầng giao diện (The presentation/User Interface) ,tầng nghiệp vụ (Business logic/Controller), tầng truy xuất dữ liệu (data access model). Mô hình MVC ra đời để đáp ứng cho những yêu cầu trên,và nó được chọn làm kiến trúc triển khai trên các ứng dụng web application....

52p phantom12137 24-10-2012 222 81   Download

Data Link Layer. Learning Objectives Upon completion of this 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 the different types of media access control methods. Identify several common logical network topologies and describe how the logical topology determines the media access control method for that network. Explain the purpose of encapsulating packets into frames to facilitate media access. ...

48p thanhtung_hk 03-11-2010 185 36   Download

Chapter 5: LAN ARCHITECTURE ATHENA Objectives Identify the seven protocol layers of the Open System Interconnection (OSI) Reference Model Discuss the functional attributes of each layer of the Open Systems Interconnection Reference Model Understanding Putting Data on the Cable and Access Methods ATHENA Content Introduction Open Systems Interconnection (OSI) Reference Model How network sends data Access Method Summary ATHENA Introduction Sending Data • Recognize data • Divide data into manageable chunks • Add information to each chunk – Location of data – Identify receiver • Add ti...

38p hangkute_101091 19-07-2010 94 10   Download

Chương 5. Tầng liên kết dữ liệu 1-6/2006 Chương 5. Giao thức tầng liên kiết dữ liệu (data link) Đặng Xuân Hà Computer Networking 2006 (http://www.hau1.edu.vn/it/dxha/courses/0506/comnet_k48th) Dept. of CS, HAU1. Ch5. Giao thức tầng liên kết dữ liệu 5.1 - Introduction and services 5.2 - Error detection and correction 5.3 - Multiple access protocols & LAN 5.4 - Link-layer addressing & ARP 5.5 - Specific link layer technologies Ethernet PPP Wireless Networks ATM Frame Relay 1-6/2006 Chương 5.

15p hangkute_101091 15-07-2010 1047 73   Download

Identify the basic characteristics of network media used in Ethernet. Describe the physical and data link features of Ethernet. Describe the function and characteristics of the media access control method used by Ethernet protocol. Explain the importance of Layer 2 addressing used for data transmission and determine how the different types of addressing impacts network operation and performance. Compare and contrast the application and benefits of using Ethernet switches in a LAN as apposed to using hubs....

94p thangvu89 15-04-2010 186 28   Download

The media access control methods described by the Data Link layer protocols define the processes by which network devices can access the network media and transmit frames in diverse network environments.

64p thangvu89 15-04-2010 169 26   Download

The data layer can be broken into three sublayers in most applications. They are the data storage layer, the data access layer, and the service agent, as shown in Figure 1-1. The data storage layer provides the mechanism for storing and managing your application data, and the data access layer provides the logic needed to retrieve and manipulate data.

20p vongsuiphat 04-01-2010 83 7   Download

TCP/IP Quick Guide TCP Services UDP Services IRC Internet Relay Chat DCAP Data Link Switching Client Access Protocol DHCP Dynamic Host Configuration Protocol BOOTP Bootstrap Protocol NTP Network Time Protocol TFTP Trivial File Transfer Protocol ICP Internet Cache Protocol OSI MODEL Layer 7: Application Layer  HTTP HyperText Transfer Protocol Gopher TELNET Virtual Terminal POP3 Post Office Protocol Finger FTP File Transfer Protocol SMTP Simple Mail Transfer Protocol IMAP Internet Message Access Protocol NNTP Network News Transfer Protocol Defines interface to user pr...

4p thuancrazy02 15-12-2009 274 123   Download