OSI Transport Layer

This chapter explain the role of Transport Layer protocols and services in supporting communications across data networks, analyze the application and operation of TCP mechanisms that support reliability, analyze the application and operation of TCP mechanisms that support reassembly and manage data loss, analyze the operation of UDP to support communicate between two processes on end devices.

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After completing this chapter, students will be able to: Explain the role of Physical layer protocols and services in supporting communication across data networks, describe the role of signals used to represent bits as a frame as the frame is transported across the local media, describe the purpose of Physical layer signaling and encoding as they are used in networks.

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Lớp nào (Layer) trong mô hình OSI chịu trách nhiệm mã hoá (encryption) dữ liệu? A) Application B) Presentation C) Session D) Transport Hãy chọn các bước hợp lý được thực hiện trong quá trình đóng gói dữ liệu (encapsulation)? A) Data-segments-packets-frames-bits B) Data-packets-segments-frames-bits C) Data-frames-segments-packets-bits .D) Data-segments-frames-packets-bits

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Communication Architecture Strategy for connecting host computers and other communicating equipment. Defines necessary elements for data communication between devices. A communication architecture, therefore, defines a standard for the communicating hosts. A programmer formats data in a manner defined by the communication architecture and passes it on to the communication software. Separating communication functions adds flexibility, for example, we do not need to modify the entire host software to include more communication devices....

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The primary duties of the transport layer, Layer 4 of the OSI model, are to transport and regulate the flow of information from the source to the destination, reliably and accurately. End-to-end control and reliability are provided by sliding windows, sequencing numbers, and acknowledgments To understand reliability and flow control, think of someone who studies a foreign language for one year and then they visit the country where that language is used.

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Data can be corrupted during transmission. For reliable communication, error must be detected and corrected are implemented either at the data link layer or the transport layer of the OSI model.Error detection uses the concept of redundancy, which means adding extra bits for detecting errors at the destination

39p hoangchung_dtvt 10-12-2012 64 4   Download

Giao thức IPsec được làm việc tại tầng Network Layer – layer 3 của mô hình OSI. Các giao thức bảo mật trên Internet khác như SSL, TLS và SSH, được thực hiện từ tầng transport layer trở lên (Từ tầng 4 tới tầng 7 mô hình OSI). Điều này tạo ra tính mềm dẻo cho IPsec, giao thức này có thể hoạt động từ tầng 4 với TCP, UDP, hầu hết các giao thức sử dụng tại tầng này. IPsec có một tính năng cao cấp hơn SSL và các phương thức khác hoạt động tại các tầng trên...

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Đợc phát triển bởi tổ chức tiêu chuẩn thế giới ISO (International Standard Organization) Gồm có 7 tầng: Tầng vật lý (Physical layer) . Tầng liên kết dữ liệu (Data link layer) Tầng mạng (Network layer) . Tầng vận chuyển (Transport layer) . Tầng giao dịch (Session layer) . Tầng trình bỡy (Presentation) . Tầng ứng dụng (Application layer) .

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KIỂM TRA MÔN HỌC MẠNG MÁY TÍNH NÂNG CAO (THỜI GIAN 60 PHÚT) - ĐỀ SỐ 1 CÂU 1: Lớp nào (Layer) trong mô hình OSI chịu trách nhiệm mã hoá (encryption) dữ liệu? A) Application B) Presentation C) Session D) Transport

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CÂU 1: Lớp nào (Layer) trong mô hình OSI chịu trách nhiệm mã hoá (encryption) dữ liệu? A) Application B) Presentation C) Session D) Transport CÂU 2: Hãy chọn các bước hợp lý được thực hiện trong quá trình đóng gói dữ liệu (encapsulation)? A) Datasegmentspacketsframesbits B) Datapacketssegmentsframesbits C) Dataframessegmentspacketsbits D) Datasegmentsframespacketsbits

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OSI Transport Layer. In this chapter, we examine the role of the Transport layer. The Transport layer also encompasses these functions: Enables multiple applications to communicate over the network at the same time on a single device. Ensures that, if required, all the data is received reliably and in order by the correct application. Employs error handling mechanisms. Learning Objectives–Upon completion of this chapter, you will be able to: Explain the need for the Transport layer.

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Transmission Control Protocol (TCP) TCP is a connection-oriented transport mechanism that resides at Layer 4 of the OSI model.

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Explain the role of Physical layer protocols and services in supporting communication across data networks. – Describe the role of signals used to represent bits as a frame as the frame is transported across the local media Describe the purpose of Physical layer signaling and encoding as they are used in networks Identify the basic characteristics of copper, fiber and wireless network media Describe common uses of copper, fiber and wireless network media

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Explain the role of Transport Layer protocols and services in supporting communications across data networks Analyze the application and operation of TCP mechanisms that support reliability Analyze the application and operation of TCP mechanisms that support reassembly and manage data loss. Analyze the operation of UDP to support communicate between two processes on end devices

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Tổng hợp kiến thức - Sự phân tầng và mô hình OSI - Tầng ứng dụng (Application layer)- Tầng giao vận (Transport layer) - Tầng mạng (Network layer)

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TCP/IP and the DoD Model DoD模型被认为是 OSI 参考模型的浓缩品,分为4 层,从上到下是: 1.Process/Application layer 2.Host-to-Host layer 3.Internet layer 4.Network Access layer 其中,如果在功能上和 OSI 参考模型互相对应的话,那么: 1.DoD模型的 Process/Application 层对应 OSI 参考模型的最高 3 层 2.DoD模型的 Host-to-Host 层对应 OSI 参考模型的 Transport 层 3.DoD模型的 Internet 层对应 OSI 参考模型的 Network 层 4.DoD模型的 Network Access层对应OSI 参考模型的最底 2层 ...

4p batoan 10-08-2009 126 14   Download